Raindrops creating electricity?...

[Commander Kinsey]

On Sat, 01 Jul 2023 20:41:45 +0100, John Larkin <jlarkin@highlandsnipmetechnology.com> wrote:

On Sat, 01 Jul 2023 20:05:21 +0100, \"Commander Kinsey\"
CK1@nospam.com> wrote:

On Sat, 01 Jul 2023 15:05:10 +0100, John Larkin <jlarkin@highlandsnipmetechnology.com> wrote:

On Wed, 28 Jun 2023 11:37:04 +0100, alan_m <junk@admac.myzen.co.uk
wrote:

On 28/06/2023 10:09, Commander Kinsey wrote:
Raindrops creating electricity? But.... wouldn\'t you be better sticking
a solar panel there? I assume you can\'t have both? Or could one fold
up when not in use?

https://www.sciencedirect.com/science/article/abs/pii/S2211285521008193

Don\'t you just need a kite and a battery big enough to store the energy
from the lightening strike? Power for life.

There might be an impedance mismatch charging the battery.

I\'ve never heard that term applied to DC and don\'t know what you mean. I only understand it for audio amplifiers.

The Maximum Power Transfer theorem works for AC or DC.

It makes sense for an amp, but not for raw power. For example, there\'s 240V at that socket there, with virtually no resistance. If I connect a resistive heater to it to it to draw power, I get all the power as usable heat pretty much, even though the resistance of the heating element is vastly more than the supply. What if I connected a fucking big element to it, such that it\'s resistance was equal to the supply line? Half the power would be dissipated in the supply line. I\'d drop from 99.9% to 50% efficiency.

There is a battery that consists of a beta emitter coated rod inside a
metal tube. It develops hundreds of kilovolts at low current, and the
problem has always been, aside from the radioactive hazard, how to
convert that down to something useful.

Can\'t be that hard, we convert voltages all the time.

Please sketch up a 5 volt power supply with a 400KV input.

Just take a normal one but moreso. Do you really think it\'s much harder to convert 50V to 5V than 10V to 5V?

 

[Anthony William Sloman]

On Sunday, July 2, 2023 at 11:36:09 PM UTC+10, Commander Kinsey wrote:

On Sat, 01 Jul 2023 20:41:45 +0100, John Larkin <jla...@highlandsnipmetechnology.com> wrote:
On Sat, 01 Jul 2023 20:05:21 +0100, \"Commander Kinsey\" <C...@nospam.com> wrote:
On Sat, 01 Jul 2023 15:05:10 +0100, John Larkin <jla...@highlandsnipmetechnology.com> wrote:
On Wed, 28 Jun 2023 11:37:04 +0100, alan_m <ju...@admac.myzen.co.uk> wrote:
On 28/06/2023 10:09, Commander Kinsey wrote:

<snip>

Please sketch up a 5 volt power supply with a 400KV input.

Just take a normal one but moreso. Do you really think it\'s much harder to convert 50V to 5V than 10V to 5V?

Look at going the other way. A photomultiplier power supply uses a inverter to step up 5V to 1000V.

You need a specially wound transformer with a high turns ratio, and the stray capacitance across the secondary makes it hard to run it at a high enough frequency to let you avoid saturating the core. Boost that by another factor of 400 and you are in an entirely different ball game.

Insulating the secondary winding well enough so that it won\'t break down at 400kV would be an interesting problem on it own.

If you wanted to make the point that you are a pig-ignorant wanker you\'ve succeeded in spades.

--
Bill Sloman, Sydney

 

[John Larkin]

On Sun, 02 Jul 2023 14:35:59 +0100, \"Commander Kinsey\"
<CK1@nospam.com> wrote:

On Sat, 01 Jul 2023 20:41:45 +0100, John Larkin <jlarkin@highlandsnipmetechnology.com> wrote:

On Sat, 01 Jul 2023 20:05:21 +0100, \"Commander Kinsey\"
CK1@nospam.com> wrote:

On Sat, 01 Jul 2023 15:05:10 +0100, John Larkin <jlarkin@highlandsnipmetechnology.com> wrote:

On Wed, 28 Jun 2023 11:37:04 +0100, alan_m <junk@admac.myzen.co.uk
wrote:

On 28/06/2023 10:09, Commander Kinsey wrote:
Raindrops creating electricity? But.... wouldn\'t you be better sticking
a solar panel there? I assume you can\'t have both? Or could one fold
up when not in use?

https://www.sciencedirect.com/science/article/abs/pii/S2211285521008193

Don\'t you just need a kite and a battery big enough to store the energy
from the lightening strike? Power for life.

There might be an impedance mismatch charging the battery.

I\'ve never heard that term applied to DC and don\'t know what you mean. I only understand it for audio amplifiers.

The Maximum Power Transfer theorem works for AC or DC.

It makes sense for an amp, but not for raw power. For example, there\'s 240V at that socket there, with virtually no resistance. If I connect a resistive heater to it to it to draw power, I get all the power as usable heat pretty much, even though the resistance of the heating element is vastly more than the supply. What if I connected a fucking big element to it, such that it\'s resistance was equal to the supply line? Half the power would be dissipated in the supply line. I\'d drop from 99.9% to 50% efficiency.

Yes, that\'s one implication of the theorem. You could really conjugate
match your AC line for a cycle or two and get a lot of power before
the breaker trips.

People don\'t impedance match audio amps either. \"Damping factor\" is
one of those quaint terms that audiodudes use to express the mismatch.
A good power amp has milliohms of output impedance.

A \"600 ohm\" audio output is usually much less.

RF types use \'S11\' and \'S22\' to express matching. A horrible mismatch
sounds better expressed in dB.

My NMR gradient amps were very good current sources, which is why they
worked better than hacked audio amps.

There is a battery that consists of a beta emitter coated rod inside a
metal tube. It develops hundreds of kilovolts at low current, and the
problem has always been, aside from the radioactive hazard, how to
convert that down to something useful.

Can\'t be that hard, we convert voltages all the time.

Please sketch up a 5 volt power supply with a 400KV input.

Just take a normal one but moreso. Do you really think it\'s much harder to convert 50V to 5V than 10V to 5V?

Yes, fewer switcher chips are available at 50 volts. I\'m doing a bunch
of designs now with +48 in and chips are relatively rare and sometimes
weird.

But I specified 400 KV. Give it a shot.

 

[Jan Panteltje]

On a sunny day (Sun, 02 Jul 2023 07:22:54 -0700) it happened John Larkin
<jlarkin@highlandSNIPMEtechnology.com> wrote in
<k613ai5fv8tmbfou5f4997b5bgak14n00p@4ax.com>:

On Sun, 02 Jul 2023 14:35:59 +0100, \"Commander Kinsey\"
CK1@nospam.com> wrote:

On Sat, 01 Jul 2023 20:41:45 +0100, John Larkin <jlarkin@highlandsnipmetechnology.com> wrote:

On Sat, 01 Jul 2023 20:05:21 +0100, \"Commander Kinsey\"
CK1@nospam.com> wrote:

On Sat, 01 Jul 2023 15:05:10 +0100, John Larkin <jlarkin@highlandsnipmetechnology.com> wrote:

On Wed, 28 Jun 2023 11:37:04 +0100, alan_m <junk@admac.myzen.co.uk
wrote:

On 28/06/2023 10:09, Commander Kinsey wrote:
Raindrops creating electricity? But.... wouldn\'t you be better sticking
a solar panel there? I assume you can\'t have both? Or could one fold
up when not in use?

https://www.sciencedirect.com/science/article/abs/pii/S2211285521008193

Don\'t you just need a kite and a battery big enough to store the energy
from the lightening strike? Power for life.

There might be an impedance mismatch charging the battery.

I\'ve never heard that term applied to DC and don\'t know what you mean. I only understand it for audio amplifiers.

The Maximum Power Transfer theorem works for AC or DC.

It makes sense for an amp, but not for raw power. For example, there\'s 240V at that socket there, with virtually no
resistance. If I connect a resistive heater to it to it to draw power, I get all the power as usable heat pretty much, even though the
resistance of the heating element is vastly more than the supply. What if I connected a fucking big element to it, such that it\'s
resistance was equal to the supply line? Half the power would be dissipated in the supply line. I\'d drop from 99.9% to 50%
efficiency.

Yes, that\'s one implication of the theorem. You could really conjugate
match your AC line for a cycle or two and get a lot of power before
the breaker trips.

People don\'t impedance match audio amps either. \"Damping factor\" is
one of those quaint terms that audiodudes use to express the mismatch.
A good power amp has milliohms of output impedance.

A \"600 ohm\" audio output is usually much less.

RF types use \'S11\' and \'S22\' to express matching. A horrible mismatch
sounds better expressed in dB.

My NMR gradient amps were very good current sources, which is why they
worked better than hacked audio amps.


There is a battery that consists of a beta emitter coated rod inside a
metal tube. It develops hundreds of kilovolts at low current, and the
problem has always been, aside from the radioactive hazard, how to
convert that down to something useful.

Can\'t be that hard, we convert voltages all the time.

Please sketch up a 5 volt power supply with a 400KV input.

Just take a normal one but moreso. Do you really think it\'s much harder to convert 50V to 5V than 10V to 5V?

Yes, fewer switcher chips are available at 50 volts. I\'m doing a bunch
of designs now with +48 in and chips are relatively rare and sometimes
weird.

But I specified 400 KV. Give it a shot.

Is done all the time
China now even has a 1.1 MV DC power line. to normal AC, then
your Meanwell can do the rest to +5
https://en.m.wikipedia.org/wiki/Ultra-high-voltage_electricity_transmission_in_China
Just order from China

Some use optical controlled solid state switch modules in series.

 

[Commander Kinsey]

On Sun, 02 Jul 2023 15:22:54 +0100, John Larkin <jlarkin@highlandsnipmetechnology.com> wrote:

On Sun, 02 Jul 2023 14:35:59 +0100, \"Commander Kinsey\"
CK1@nospam.com> wrote:

On Sat, 01 Jul 2023 20:41:45 +0100, John Larkin <jlarkin@highlandsnipmetechnology.com> wrote:

On Sat, 01 Jul 2023 20:05:21 +0100, \"Commander Kinsey\"
CK1@nospam.com> wrote:

On Sat, 01 Jul 2023 15:05:10 +0100, John Larkin <jlarkin@highlandsnipmetechnology.com> wrote:

On Wed, 28 Jun 2023 11:37:04 +0100, alan_m <junk@admac.myzen.co.uk
wrote:

On 28/06/2023 10:09, Commander Kinsey wrote:
Raindrops creating electricity? But.... wouldn\'t you be better sticking
a solar panel there? I assume you can\'t have both? Or could one fold
up when not in use?

https://www.sciencedirect.com/science/article/abs/pii/S2211285521008193

Don\'t you just need a kite and a battery big enough to store the energy
from the lightening strike? Power for life.

There might be an impedance mismatch charging the battery.

I\'ve never heard that term applied to DC and don\'t know what you mean. I only understand it for audio amplifiers.

The Maximum Power Transfer theorem works for AC or DC.

It makes sense for an amp, but not for raw power. For example, there\'s 240V at that socket there, with virtually no resistance. If I connect a resistive heater to it to it to draw power, I get all the power as usable heat pretty much, even though the resistance of the heating element is vastly more than the supply. What if I connected a fucking big element to it, such that it\'s resistance was equal to the supply line? Half the power would be dissipated in the supply line. I\'d drop from 99.9% to 50% efficiency.

Yes, that\'s one implication of the theorem. You could really conjugate
match your AC line for a cycle or two and get a lot of power before
the breaker trips.

What is a breaker? Is that a modern version of a fuse?

> People don\'t impedance match audio amps either.

I\'m sure I was told you do to get the most power out. I guess that\'s only true for rubbish amps with a high resistance, where connected low ohm speakers to it gets less power out by dropping the voltage. IF you impedance matched a milliohm amp, you\'d get more current than it was capable of producing and break it.

\"Damping factor\" is
one of those quaint terms that audiodudes use to express the mismatch.
A good power amp has milliohms of output impedance.

A \"600 ohm\" audio output is usually much less.

RF types use \'S11\' and \'S22\' to express matching. A horrible mismatch
sounds better expressed in dB.

My NMR gradient amps were very good current sources, which is why they
worked better than hacked audio amps.

There is a battery that consists of a beta emitter coated rod inside a
metal tube. It develops hundreds of kilovolts at low current, and the
problem has always been, aside from the radioactive hazard, how to
convert that down to something useful.

Can\'t be that hard, we convert voltages all the time.

Please sketch up a 5 volt power supply with a 400KV input.

Just take a normal one but moreso. Do you really think it\'s much harder to convert 50V to 5V than 10V to 5V?

Yes, fewer switcher chips are available at 50 volts. I\'m doing a bunch
of designs now with +48 in and chips are relatively rare and sometimes
weird.

But I specified 400 KV. Give it a shot.

A little coil?

 

[Commander Kinsey]

On Sun, 02 Jul 2023 16:44:38 +0100, Jan Panteltje <alien@comet.invalid> wrote:

On a sunny day (Sun, 02 Jul 2023 07:22:54 -0700) it happened John Larkin
jlarkin@highlandSNIPMEtechnology.com> wrote in
k613ai5fv8tmbfou5f4997b5bgak14n00p@4ax.com>:

On Sun, 02 Jul 2023 14:35:59 +0100, \"Commander Kinsey\"
CK1@nospam.com> wrote:

On Sat, 01 Jul 2023 20:41:45 +0100, John Larkin <jlarkin@highlandsnipmetechnology.com> wrote:

On Sat, 01 Jul 2023 20:05:21 +0100, \"Commander Kinsey\"
CK1@nospam.com> wrote:

On Sat, 01 Jul 2023 15:05:10 +0100, John Larkin <jlarkin@highlandsnipmetechnology.com> wrote:

On Wed, 28 Jun 2023 11:37:04 +0100, alan_m <junk@admac.myzen.co.uk
wrote:

On 28/06/2023 10:09, Commander Kinsey wrote:
Raindrops creating electricity? But.... wouldn\'t you be better sticking
a solar panel there? I assume you can\'t have both? Or could one fold
up when not in use?

https://www.sciencedirect.com/science/article/abs/pii/S2211285521008193

Don\'t you just need a kite and a battery big enough to store the energy
from the lightening strike? Power for life.

There might be an impedance mismatch charging the battery.

I\'ve never heard that term applied to DC and don\'t know what you mean. I only understand it for audio amplifiers.

The Maximum Power Transfer theorem works for AC or DC.

It makes sense for an amp, but not for raw power. For example, there\'s 240V at that socket there, with virtually no
resistance. If I connect a resistive heater to it to it to draw power, I get all the power as usable heat pretty much, even though the
resistance of the heating element is vastly more than the supply. What if I connected a fucking big element to it, such that it\'s
resistance was equal to the supply line? Half the power would be dissipated in the supply line. I\'d drop from 99.9% to 50%
efficiency.

Yes, that\'s one implication of the theorem. You could really conjugate
match your AC line for a cycle or two and get a lot of power before
the breaker trips.

People don\'t impedance match audio amps either. \"Damping factor\" is
one of those quaint terms that audiodudes use to express the mismatch.
A good power amp has milliohms of output impedance.

A \"600 ohm\" audio output is usually much less.

RF types use \'S11\' and \'S22\' to express matching. A horrible mismatch
sounds better expressed in dB.

My NMR gradient amps were very good current sources, which is why they
worked better than hacked audio amps.


There is a battery that consists of a beta emitter coated rod inside a
metal tube. It develops hundreds of kilovolts at low current, and the
problem has always been, aside from the radioactive hazard, how to
convert that down to something useful.

Can\'t be that hard, we convert voltages all the time.

Please sketch up a 5 volt power supply with a 400KV input.

Just take a normal one but moreso. Do you really think it\'s much harder to convert 50V to 5V than 10V to 5V?

Yes, fewer switcher chips are available at 50 volts. I\'m doing a bunch
of designs now with +48 in and chips are relatively rare and sometimes
weird.

But I specified 400 KV. Give it a shot.

Is done all the time
China now even has a 1.1 MV DC power line. to normal AC, then
your Meanwell can do the rest to +5
https://en.m.wikipedia.org/wiki/Ultra-high-voltage_electricity_transmission_in_China
Just order from China

Some use optical controlled solid state switch modules in series.

I notice they only use DC when it\'s longer lines. Presumably it costs more than AC, so they only use it when AC wouldn\'t travel far enough.

 

[Commander Kinsey]

On Sat, 01 Jul 2023 13:19:02 +0100, Jan Panteltje <alien@comet.invalid> wrote:

On a sunny day (Sat, 01 Jul 2023 12:13:07 +0100) it happened \"Commander
Kinsey\" <CK1@nospam.com> wrote in <op.17ehf5upmvhs6z@ryzen>:

On Wed, 28 Jun 2023 12:50:13 +0100, Jan Panteltje <alien@comet.invalid> wrote:

On a sunny day (Wed, 28 Jun 2023 10:09:41 +0100) it happened \"Commander
Kinsey\" <CK1@nospam.com> wrote in <op.168rqfunmvhs6z@ryzen>:

Raindrops creating electricity? But.... wouldn\'t you be better sticking a solar panel there? I assume you can\'t have both?
Or
could one fold up when not in use?

https://www.sciencedirect.com/science/article/abs/pii/S2211285521008193

Raindrops falling on piezo transducers could work too?
Or falling on a horizontally mounted dynamic speaker cone ?

I will take a closer look perhaps when their thing is in the shops here.

The speaker cone could become a large microphone, and you could feed the data into a complex system for weather prediction. You
would know immediately when it was raining, without the hassle of looking out the window.

I you used a 1 to 10 standard audio transformer in reverse perhaps there would
be enough voltage to flash a LED if a drop hits the cone.

All that said I just look at the \'rain radar\' here, this morning showed the last shower of today leaving
and I started work in the garden...
https://www.meteox.com/h.aspx?r=&jaar=-3&soort=loop1uur&lightning=1

I have a rain radar. Stand in the middle of the garden, rotate, observe clouds.

 

[Jan Panteltje]

On a sunny day (Mon, 03 Jul 2023 00:35:16 +0100) it happened \"Commander
Kinsey\" <CK1@nospam.com> wrote in <op.17hag2famvhs6z@ryzen>:

On Sun, 02 Jul 2023 16:44:38 +0100, Jan Panteltje <alien@comet.invalid> wrote:

On a sunny day (Sun, 02 Jul 2023 07:22:54 -0700) it happened John Larkin
jlarkin@highlandSNIPMEtechnology.com> wrote in
k613ai5fv8tmbfou5f4997b5bgak14n00p@4ax.com>:

On Sun, 02 Jul 2023 14:35:59 +0100, \"Commander Kinsey\"
CK1@nospam.com> wrote:

On Sat, 01 Jul 2023 20:41:45 +0100, John Larkin <jlarkin@highlandsnipmetechnology.com> wrote:

On Sat, 01 Jul 2023 20:05:21 +0100, \"Commander Kinsey\"
CK1@nospam.com> wrote:

On Sat, 01 Jul 2023 15:05:10 +0100, John Larkin <jlarkin@highlandsnipmetechnology.com> wrote:

On Wed, 28 Jun 2023 11:37:04 +0100, alan_m <junk@admac.myzen.co.uk
wrote:

On 28/06/2023 10:09, Commander Kinsey wrote:
Raindrops creating electricity? But.... wouldn\'t you be better sticking
a solar panel there? I assume you can\'t have both? Or could one fold
up when not in use?

https://www.sciencedirect.com/science/article/abs/pii/S2211285521008193

Don\'t you just need a kite and a battery big enough to store the energy
from the lightening strike? Power for life.

There might be an impedance mismatch charging the battery.

I\'ve never heard that term applied to DC and don\'t know what you mean. I only understand it for audio amplifiers.

The Maximum Power Transfer theorem works for AC or DC.

It makes sense for an amp, but not for raw power. For example, there\'s 240V at that socket there, with virtually no
resistance. If I connect a resistive heater to it to it to draw power, I get all the power as usable heat pretty much, even
though the
resistance of the heating element is vastly more than the supply. What if I connected a fucking big element to it, such
that it\'s
resistance was equal to the supply line? Half the power would be dissipated in the supply line. I\'d drop from 99.9% to
50%
efficiency.

Yes, that\'s one implication of the theorem. You could really conjugate
match your AC line for a cycle or two and get a lot of power before
the breaker trips.

People don\'t impedance match audio amps either. \"Damping factor\" is
one of those quaint terms that audiodudes use to express the mismatch.
A good power amp has milliohms of output impedance.

A \"600 ohm\" audio output is usually much less.

RF types use \'S11\' and \'S22\' to express matching. A horrible mismatch
sounds better expressed in dB.

My NMR gradient amps were very good current sources, which is why they
worked better than hacked audio amps.


There is a battery that consists of a beta emitter coated rod inside a
metal tube. It develops hundreds of kilovolts at low current, and the
problem has always been, aside from the radioactive hazard, how to
convert that down to something useful.

Can\'t be that hard, we convert voltages all the time.

Please sketch up a 5 volt power supply with a 400KV input.

Just take a normal one but moreso. Do you really think it\'s much harder to convert 50V to 5V than 10V to 5V?

Yes, fewer switcher chips are available at 50 volts. I\'m doing a bunch
of designs now with +48 in and chips are relatively rare and sometimes
weird.

But I specified 400 KV. Give it a shot.

Is done all the time
China now even has a 1.1 MV DC power line. to normal AC, then
your Meanwell can do the rest to +5
https://en.m.wikipedia.org/wiki/Ultra-high-voltage_electricity_transmission_in_China
Just order from China

Some use optical controlled solid state switch modules in series.

I notice they only use DC when it\'s longer lines. Presumably it costs more than AC, so they only use it when AC wouldn\'t travel
far enough.

Yes AC has all sorts of problems over long distances, inductance for example.
https://en.m.wikipedia.org/wiki/High-voltage_direct_current

 

[Jan Panteltje]

On a sunny day (Mon, 03 Jul 2023 03:05:15 +0100) it happened \"Commander
Kinsey\" <CK1@nospam.com> wrote in <op.17hhe1wdmvhs6z@ryzen>:

On Sat, 01 Jul 2023 13:19:02 +0100, Jan Panteltje <alien@comet.invalid> wrote:

On a sunny day (Sat, 01 Jul 2023 12:13:07 +0100) it happened \"Commander
Kinsey\" <CK1@nospam.com> wrote in <op.17ehf5upmvhs6z@ryzen>:

On Wed, 28 Jun 2023 12:50:13 +0100, Jan Panteltje <alien@comet.invalid> wrote:

On a sunny day (Wed, 28 Jun 2023 10:09:41 +0100) it happened \"Commander
Kinsey\" <CK1@nospam.com> wrote in <op.168rqfunmvhs6z@ryzen>:

Raindrops creating electricity? But.... wouldn\'t you be better sticking a solar panel there? I assume you can\'t have
both?
Or
could one fold up when not in use?

https://www.sciencedirect.com/science/article/abs/pii/S2211285521008193

Raindrops falling on piezo transducers could work too?
Or falling on a horizontally mounted dynamic speaker cone ?

I will take a closer look perhaps when their thing is in the shops here.

The speaker cone could become a large microphone, and you could feed the data into a complex system for weather prediction.
You
would know immediately when it was raining, without the hassle of looking out the window.

I you used a 1 to 10 standard audio transformer in reverse perhaps there would
be enough voltage to flash a LED if a drop hits the cone.

All that said I just look at the \'rain radar\' here, this morning showed the last shower of today leaving
and I started work in the garden...
https://www.meteox.com/h.aspx?r=&jaar=-3&soort=loop1uur&lightning=1

I have a rain radar. Stand in the middle of the garden, rotate, observe clouds.

May work if little wind, we have 5 Bft here now, so one hour may make a lot of difference as rain clouds
come in that you did not see. Just after you got all the garden tools out...
I also use rain radar if I want to go biking.
It is also hard to tell from just vision if far away clouds bring rain or not.

 

[Anthony William Sloman]

On Monday, July 3, 2023 at 9:35:24 AM UTC+10, Commander Kinsey wrote:

On Sun, 02 Jul 2023 16:44:38 +0100, Jan Panteltje <al...@comet.invalid> wrote:
On a sunny day (Sun, 02 Jul 2023 07:22:54 -0700) it happened John Larkin
jla...@highlandSNIPMEtechnology.com> wrote in <k613ai5fv8tmbfou5...@4ax.com>:
On Sun, 02 Jul 2023 14:35:59 +0100, \"Commander Kinsey\" <C...@nospam.com> wrote:
On Sat, 01 Jul 2023 20:41:45 +0100, John Larkin <jla...@highlandsnipmetechnology.com> wrote:
On Sat, 01 Jul 2023 20:05:21 +0100, \"Commander Kinsey\" <C...@nospam..com> wrote:
On Sat, 01 Jul 2023 15:05:10 +0100, John Larkin <jla...@highlandsnipmetechnology.com> wrote:
On Wed, 28 Jun 2023 11:37:04 +0100, alan_m <ju...@admac.myzen.co.uk> wrote:
On 28/06/2023 10:09, Commander Kinsey wrote:

<snip>

Some use optical controlled solid state switch modules in series.

I notice they only use DC when it\'s longer lines. Presumably it costs more than AC, so they only use it when AC wouldn\'t travel far enough.

Converting from AC to DC to drive the line, and converting back again at the other end costs money.

The advantage is lower peak voltage, and no losses due to induced AC currents in the vicinity of the line.

\"Won\'t travel far enough\" isn\'t a problem. AC not being the cheapest way of getting power to a remote location is a more informative way of saying it.

--
Bill Sloman, Sydney

 

[Peeler]

On Mon, 03 Jul 2023 04:39:18 GMT, Jan Panteltje, another brain dead,
troll-feeding senile ASSHOLE, blathered:

Yes AC has all sorts of problems over long distances, inductance for example.
https://en.m.wikipedia.org/wiki/High-voltage_direct_current

HIS problem is that he can\'t ever get enough attention by troll-feeding
senile ASSHOLES like you! Just how senile are you all? <tsk>

--
More of gay wanker Birdbrain\'s sociopathic sick shit:
\"If the car I park next to is more expensive than mine, I don\'t bother
making sure I don\'t hit it with the door.\"
MID: <op.za471cb9js98qf@red.lan>

 

[Paul]

On 7/1/2023 7:13 AM, Commander Kinsey wrote:

The best way to make power is PV solar panels and lead acid batteries.
I can make power 10 times cheaper than I can buy it off the grid.  And don\'t
even think about not using batteries and selling it to the grid, they give
you way less than they sell it for.

You just shake the money-tree, and PV solar panels fall out, right ?

On your way home, pick up one of these and you won\'t need lead acid batteries.
This is the home-owner version of the \"ten day battery\"

https://newatlas.com/automotive/porsche-charging-trailers-taycan-track/

The cars around that trailer, cost extra.

Paul

 

[Commander Kinsey]

On Mon, 03 Jul 2023 05:44:20 +0100, Jan Panteltje <alien@comet.invalid> wrote:

On a sunny day (Mon, 03 Jul 2023 03:05:15 +0100) it happened \"Commander
Kinsey\" <CK1@nospam.com> wrote in <op.17hhe1wdmvhs6z@ryzen>:

On Sat, 01 Jul 2023 13:19:02 +0100, Jan Panteltje <alien@comet.invalid> wrote:

On a sunny day (Sat, 01 Jul 2023 12:13:07 +0100) it happened \"Commander
Kinsey\" <CK1@nospam.com> wrote in <op.17ehf5upmvhs6z@ryzen>:

On Wed, 28 Jun 2023 12:50:13 +0100, Jan Panteltje <alien@comet.invalid> wrote:

On a sunny day (Wed, 28 Jun 2023 10:09:41 +0100) it happened \"Commander
Kinsey\" <CK1@nospam.com> wrote in <op.168rqfunmvhs6z@ryzen>:

Raindrops creating electricity? But.... wouldn\'t you be better sticking a solar panel there? I assume you can\'t have
both?
Or
could one fold up when not in use?

https://www.sciencedirect.com/science/article/abs/pii/S2211285521008193

Raindrops falling on piezo transducers could work too?
Or falling on a horizontally mounted dynamic speaker cone ?

I will take a closer look perhaps when their thing is in the shops here.

The speaker cone could become a large microphone, and you could feed the data into a complex system for weather prediction.
You
would know immediately when it was raining, without the hassle of looking out the window.

I you used a 1 to 10 standard audio transformer in reverse perhaps there would
be enough voltage to flash a LED if a drop hits the cone.

All that said I just look at the \'rain radar\' here, this morning showed the last shower of today leaving
and I started work in the garden...
https://www.meteox.com/h.aspx?r=&jaar=-3&soort=loop1uur&lightning=1

I have a rain radar. Stand in the middle of the garden, rotate, observe clouds.

May work if little wind, we have 5 Bft here now, so one hour may make a lot of difference as rain clouds
come in that you did not see. Just after you got all the garden tools out...

It doesn\'t take an hour to get tools out.

> I also use rain radar if I want to go biking.

Isn\'t your skin waterproof?

> It is also hard to tell from just vision if far away clouds bring rain or not.

The darker ones tend to burst.

 

[Commander Kinsey]

On Mon, 03 Jul 2023 20:51:07 +0100, Paul <nospam@needed.invalid> wrote:

On 7/1/2023 7:13 AM, Commander Kinsey wrote:

The best way to make power is PV solar panels and lead acid batteries.
I can make power 10 times cheaper than I can buy it off the grid. And don\'t
even think about not using batteries and selling it to the grid, they give
you way less than they sell it for.

You just shake the money-tree, and PV solar panels fall out, right ?

When I said 10 times cheaper, what did you think was the cost? That\'s right, the batteries and panels. They pay for themselves in a year or two.

On your way home, pick up one of these and you won\'t need lead acid batteries.
This is the home-owner version of the \"ten day battery\"

https://newatlas.com/automotive/porsche-charging-trailers-taycan-track/

The cars around that trailer, cost extra.

Isn\'t there power at racetracks?

 

[Commander Kinsey]

On Mon, 03 Jul 2023 05:39:18 +0100, Jan Panteltje <alien@comet.invalid> wrote:

On a sunny day (Mon, 03 Jul 2023 00:35:16 +0100) it happened \"Commander
Kinsey\" <CK1@nospam.com> wrote in <op.17hag2famvhs6z@ryzen>:

On Sun, 02 Jul 2023 16:44:38 +0100, Jan Panteltje <alien@comet.invalid> wrote:

On a sunny day (Sun, 02 Jul 2023 07:22:54 -0700) it happened John Larkin
jlarkin@highlandSNIPMEtechnology.com> wrote in
k613ai5fv8tmbfou5f4997b5bgak14n00p@4ax.com>:

On Sun, 02 Jul 2023 14:35:59 +0100, \"Commander Kinsey\"
CK1@nospam.com> wrote:

On Sat, 01 Jul 2023 20:41:45 +0100, John Larkin <jlarkin@highlandsnipmetechnology.com> wrote:

On Sat, 01 Jul 2023 20:05:21 +0100, \"Commander Kinsey\"
CK1@nospam.com> wrote:

On Sat, 01 Jul 2023 15:05:10 +0100, John Larkin <jlarkin@highlandsnipmetechnology.com> wrote:

On Wed, 28 Jun 2023 11:37:04 +0100, alan_m <junk@admac.myzen.co.uk
wrote:

On 28/06/2023 10:09, Commander Kinsey wrote:
Raindrops creating electricity? But.... wouldn\'t you be better sticking
a solar panel there? I assume you can\'t have both? Or could one fold
up when not in use?

https://www.sciencedirect.com/science/article/abs/pii/S2211285521008193

Don\'t you just need a kite and a battery big enough to store the energy
from the lightening strike? Power for life.

There might be an impedance mismatch charging the battery.

I\'ve never heard that term applied to DC and don\'t know what you mean. I only understand it for audio amplifiers.

The Maximum Power Transfer theorem works for AC or DC.

It makes sense for an amp, but not for raw power. For example, there\'s 240V at that socket there, with virtually no
resistance. If I connect a resistive heater to it to it to draw power, I get all the power as usable heat pretty much, even
though the
resistance of the heating element is vastly more than the supply. What if I connected a fucking big element to it, such
that it\'s
resistance was equal to the supply line? Half the power would be dissipated in the supply line. I\'d drop from 99.9% to
50%
efficiency.

Yes, that\'s one implication of the theorem. You could really conjugate
match your AC line for a cycle or two and get a lot of power before
the breaker trips.

People don\'t impedance match audio amps either. \"Damping factor\" is
one of those quaint terms that audiodudes use to express the mismatch.
A good power amp has milliohms of output impedance.

A \"600 ohm\" audio output is usually much less.

RF types use \'S11\' and \'S22\' to express matching. A horrible mismatch
sounds better expressed in dB.

My NMR gradient amps were very good current sources, which is why they
worked better than hacked audio amps.


There is a battery that consists of a beta emitter coated rod inside a
metal tube. It develops hundreds of kilovolts at low current, and the
problem has always been, aside from the radioactive hazard, how to
convert that down to something useful.

Can\'t be that hard, we convert voltages all the time.

Please sketch up a 5 volt power supply with a 400KV input.

Just take a normal one but moreso. Do you really think it\'s much harder to convert 50V to 5V than 10V to 5V?

Yes, fewer switcher chips are available at 50 volts. I\'m doing a bunch
of designs now with +48 in and chips are relatively rare and sometimes
weird.

But I specified 400 KV. Give it a shot.

Is done all the time
China now even has a 1.1 MV DC power line. to normal AC, then
your Meanwell can do the rest to +5
https://en.m.wikipedia.org/wiki/Ultra-high-voltage_electricity_transmission_in_China
Just order from China

Some use optical controlled solid state switch modules in series.

I notice they only use DC when it\'s longer lines. Presumably it costs more than AC, so they only use it when AC wouldn\'t travel
far enough.

Yes AC has all sorts of problems over long distances, inductance for example.
https://en.m.wikipedia.org/wiki/High-voltage_direct_current

I was thinking capacitance. Charging the lines up and nothing gets out the other end before the next half cycle.

 

[Commander Kinsey]

On Sat, 01 Jul 2023 12:19:44 +0100, alan_m <junk@admac.myzen.co.uk> wrote:

On 01/07/2023 12:12, Commander Kinsey wrote:

The best way to make power is PV solar panels and lead acid batteries.
I can make power 10 times cheaper than I can buy it off the grid. And
don\'t even think about not using batteries and selling it to the grid,
they give you way less than they sell it for.

So why haven\'t you gone completely off grid?

Because I haven\'t moved house yet, to somewhere with a lot more space. And I can\'t be bothered setting something up only to move it.

Or, is it a case that it\'s
only 10 times cheaper if you ignore the initial cost of the solar
panels, battery, inverter and the ongoing cost of back-up for when the
sun doesn\'t shine long enough during the day.

If I ignored those it would be infinity times cheaper. Clearly I\'ve accounted for those costs to get a finite value.

 

[Commander Kinsey]

On Sat, 01 Jul 2023 12:19:44 +0100, alan_m <junk@admac.myzen.co.uk> wrote:

On 01/07/2023 12:12, Commander Kinsey wrote:

The best way to make power is PV solar panels and lead acid batteries.
I can make power 10 times cheaper than I can buy it off the grid. And
don\'t even think about not using batteries and selling it to the grid,
they give you way less than they sell it for.

So why haven\'t you gone completely off grid?

What made you think I hadn\'t?

 

[Commander Kinsey]

On Thu, 29 Jun 2023 15:21:51 +0100, John Larkin <jlarkin@highlandsnipmetechnology.com> wrote:

On Thu, 29 Jun 2023 12:40:16 +0100, \"Commander Kinsey\"
CK1@nospam.com> wrote:

On Wed, 28 Jun 2023 17:05:01 +0100, John Larkin <jlarkin@highlandsnipmetechnology.com> wrote:

On Wed, 28 Jun 2023 10:09:41 +0100, \"Commander Kinsey\"
CK1@nospam.com> wrote:

Raindrops creating electricity? But.... wouldn\'t you be better sticking a solar panel there? I assume you can\'t have both? Or could one fold up when not in use?

https://www.sciencedirect.com/science/article/abs/pii/S2211285521008193

Put a plate on the roof and connect it to an audio amp and a speaker.

I did that as a kid and heard all sorts of weird stuff. I don\'t recall
the sound of raindrop impacts, but they would be cool.

You heard your neighbour? You created a parabolic dish? Or maybe aliens?

No, it was just an e-field probe. Of course there was a lot of verying
harmonics of 60 Hz, but lots of distant atmospherics, lightning and
once in a while the \"dawn chorus\" of round-the-world lightning echoes
and stuff. It was fun, but I was a weird kid.

https://www.youtube.com/watch?v=KD3CBY2CnXg

That\'s too much like real sound. What am I hearing in that clip?

 

[John Larkin]

On Tue, 04 Jul 2023 01:09:19 +0100, \"Commander Kinsey\"
<CK1@nospam.com> wrote:

On Mon, 03 Jul 2023 05:39:18 +0100, Jan Panteltje <alien@comet.invalid> wrote:

On a sunny day (Mon, 03 Jul 2023 00:35:16 +0100) it happened \"Commander
Kinsey\" <CK1@nospam.com> wrote in <op.17hag2famvhs6z@ryzen>:

On Sun, 02 Jul 2023 16:44:38 +0100, Jan Panteltje <alien@comet.invalid> wrote:

On a sunny day (Sun, 02 Jul 2023 07:22:54 -0700) it happened John Larkin
jlarkin@highlandSNIPMEtechnology.com> wrote in
k613ai5fv8tmbfou5f4997b5bgak14n00p@4ax.com>:

On Sun, 02 Jul 2023 14:35:59 +0100, \"Commander Kinsey\"
CK1@nospam.com> wrote:

On Sat, 01 Jul 2023 20:41:45 +0100, John Larkin <jlarkin@highlandsnipmetechnology.com> wrote:

On Sat, 01 Jul 2023 20:05:21 +0100, \"Commander Kinsey\"
CK1@nospam.com> wrote:

On Sat, 01 Jul 2023 15:05:10 +0100, John Larkin <jlarkin@highlandsnipmetechnology.com> wrote:

On Wed, 28 Jun 2023 11:37:04 +0100, alan_m <junk@admac.myzen.co.uk
wrote:

On 28/06/2023 10:09, Commander Kinsey wrote:
Raindrops creating electricity? But.... wouldn\'t you be better sticking
a solar panel there? I assume you can\'t have both? Or could one fold
up when not in use?

https://www.sciencedirect.com/science/article/abs/pii/S2211285521008193

Don\'t you just need a kite and a battery big enough to store the energy
from the lightening strike? Power for life.

There might be an impedance mismatch charging the battery.

I\'ve never heard that term applied to DC and don\'t know what you mean. I only understand it for audio amplifiers.

The Maximum Power Transfer theorem works for AC or DC.

It makes sense for an amp, but not for raw power. For example, there\'s 240V at that socket there, with virtually no
resistance. If I connect a resistive heater to it to it to draw power, I get all the power as usable heat pretty much, even
though the
resistance of the heating element is vastly more than the supply. What if I connected a fucking big element to it, such
that it\'s
resistance was equal to the supply line? Half the power would be dissipated in the supply line. I\'d drop from 99.9% to
50%
efficiency.

Yes, that\'s one implication of the theorem. You could really conjugate
match your AC line for a cycle or two and get a lot of power before
the breaker trips.

People don\'t impedance match audio amps either. \"Damping factor\" is
one of those quaint terms that audiodudes use to express the mismatch.
A good power amp has milliohms of output impedance.

A \"600 ohm\" audio output is usually much less.

RF types use \'S11\' and \'S22\' to express matching. A horrible mismatch
sounds better expressed in dB.

My NMR gradient amps were very good current sources, which is why they
worked better than hacked audio amps.


There is a battery that consists of a beta emitter coated rod inside a
metal tube. It develops hundreds of kilovolts at low current, and the
problem has always been, aside from the radioactive hazard, how to
convert that down to something useful.

Can\'t be that hard, we convert voltages all the time.

Please sketch up a 5 volt power supply with a 400KV input.

Just take a normal one but moreso. Do you really think it\'s much harder to convert 50V to 5V than 10V to 5V?

Yes, fewer switcher chips are available at 50 volts. I\'m doing a bunch
of designs now with +48 in and chips are relatively rare and sometimes
weird.

But I specified 400 KV. Give it a shot.

Is done all the time
China now even has a 1.1 MV DC power line. to normal AC, then
your Meanwell can do the rest to +5
https://en.m.wikipedia.org/wiki/Ultra-high-voltage_electricity_transmission_in_China
Just order from China

Some use optical controlled solid state switch modules in series.

I notice they only use DC when it\'s longer lines. Presumably it costs more than AC, so they only use it when AC wouldn\'t travel
far enough.

Yes AC has all sorts of problems over long distances, inductance for example.
https://en.m.wikipedia.org/wiki/High-voltage_direct_current

I was thinking capacitance. Charging the lines up and nothing gets out the other end before the next half cycle.

It\'s literally a transmission line, with capacitance and inductance
and some propagation velocity; lossless so far. The real problem is
losses, namely series and shunt (mostly corona) equivalent resistance.
AC has higher peak voltage (more corona losses per watt transmitted)
and skin loss.

 

[John Larkin]

On Tue, 04 Jul 2023 01:39:39 +0100, \"Commander Kinsey\"
<CK1@nospam.com> wrote:

On Thu, 29 Jun 2023 15:21:51 +0100, John Larkin <jlarkin@highlandsnipmetechnology.com> wrote:

On Thu, 29 Jun 2023 12:40:16 +0100, \"Commander Kinsey\"
CK1@nospam.com> wrote:

On Wed, 28 Jun 2023 17:05:01 +0100, John Larkin <jlarkin@highlandsnipmetechnology.com> wrote:

On Wed, 28 Jun 2023 10:09:41 +0100, \"Commander Kinsey\"
CK1@nospam.com> wrote:

Raindrops creating electricity? But.... wouldn\'t you be better sticking a solar panel there? I assume you can\'t have both? Or could one fold up when not in use?

https://www.sciencedirect.com/science/article/abs/pii/S2211285521008193

Put a plate on the roof and connect it to an audio amp and a speaker.

I did that as a kid and heard all sorts of weird stuff. I don\'t recall
the sound of raindrop impacts, but they would be cool.

You heard your neighbour? You created a parabolic dish? Or maybe aliens?

No, it was just an e-field probe. Of course there was a lot of verying
harmonics of 60 Hz, but lots of distant atmospherics, lightning and
once in a while the \"dawn chorus\" of round-the-world lightning echoes
and stuff. It was fun, but I was a weird kid.

https://www.youtube.com/watch?v=KD3CBY2CnXg

That\'s too much like real sound. What am I hearing in that clip?

Just string a modest long-wire antenna and run it through a hi-z input
audio amp and listen to the world.

One round-the-world sound is

BEEEOOOooooo that lasts several seconds. And lots of chirps and pops.