R
rickman
Guest
On 9/6/2016 3:15 PM, George Herold wrote:
Yeah, but that's Australian dollars...
--
Rick C
Yeah, but that's Australian dollars...
--
Rick C
C
Cursitor Doom
Guest
On Wed, 07 Sep 2016 02:14:58 -0700, tabbypurr wrote:
Unvetted ones would pay even more, given it's a simple matter to make an
extremely powerful explosive from it!
Unvetted ones would pay even more, given it's a simple matter to make an
extremely powerful explosive from it!
P
Phil Hobbs
Guest
But not so simple to survive handling the resulting product in any quantity. Fulminate of mercury is touchy stuff, almost in the nitrogen triiodide class.
Cheers
Phil Hobbs
C
Cursitor Doom
Guest
On Wed, 07 Sep 2016 14:23:01 -0700, Phil Hobbs wrote:
That's why it's used as the (percussion-sensitive) primer in shells, Phil.
That's why it's used as the (percussion-sensitive) primer in shells, Phil.
P
Phil Hobbs
Guest
On 09/07/2016 07:12 PM, Cursitor Doom wrote:
Used to be. Not since WW2 at least, iirc.
Cheers
Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics
160 North State Road #203
Briarcliff Manor NY 10510
hobbs at electrooptical dot net
http://electrooptical.net
Used to be. Not since WW2 at least, iirc.
Cheers
Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics
160 North State Road #203
Briarcliff Manor NY 10510
hobbs at electrooptical dot net
http://electrooptical.net
C
Cursitor Doom
Guest
On Wed, 07 Sep 2016 19:55:25 -0400, Phil Hobbs wrote:
> Used to be. Not since WW2 at least, iirc.
Well maybe I'm a bit out of date on the subject. We used to make that
stuff, soak it up in blotting paper, let it dry out, then fire it with
pea-shooters at the heads of 10yr old girls we fancied. I should say I
was only 10 myself at the time and this was over 50 years ago.
I'm not aware any of the girls' hearing was permanently damaged by this
unusual form of courtship.
> Used to be. Not since WW2 at least, iirc.
Well maybe I'm a bit out of date on the subject. We used to make that
stuff, soak it up in blotting paper, let it dry out, then fire it with
pea-shooters at the heads of 10yr old girls we fancied. I should say I
was only 10 myself at the time and this was over 50 years ago.
I'm not aware any of the girls' hearing was permanently damaged by this
unusual form of courtship.
P
Phil Hobbs
Guest
Sure it wasn't nitrogen tri-iodide? All you need for that is ammonia and iodine drops.
Cheers
Phil Hobbs
L
Lasse Langwadt Christense
Guest
Den torsdag den 8. september 2016 kl. 18.30.59 UTC+2 skrev Phil Hobbs:
https://youtu.be/lZT7VHVSlTo
Used to be. Â Not since WW2 at least, iirc.
Well maybe I'm a bit out of date on the subject. We used to make that
stuff, soak it up in blotting paper, let it dry out, then fire it with
pea-shooters at the heads of 10yr old girls we fancied. I should say I
was only 10 myself at the time and this was over 50 years ago.
I'm not aware any of the girls' hearing was permanently damaged by this
unusual form of courtship.
Sure it wasn't nitrogen tri-iodide? All you need for that is ammonia and iodine drops.
https://youtu.be/lZT7VHVSlTo
K
krw
Guest
On Thu, 8 Sep 2016 09:30:56 -0700 (PDT), Phil Hobbs
<pcdhobbs@gmail.com> wrote:
We used to make that stuff by the pound. Years later, my mother's
best friend married the owner of the drug store we bought the ammonia
water from. He couldn't figure out what we were doing with gallons of
28% ammonia water. My mother asked and wished she had remained
ignorant. ;-)
<pcdhobbs@gmail.com> wrote:
Used to be. Not since WW2 at least, iirc.
Well maybe I'm a bit out of date on the subject. We used to make that
stuff, soak it up in blotting paper, let it dry out, then fire it with
pea-shooters at the heads of 10yr old girls we fancied. I should say I
was only 10 myself at the time and this was over 50 years ago.
I'm not aware any of the girls' hearing was permanently damaged by this
unusual form of courtship.
Sure it wasn't nitrogen tri-iodide? All you need for that is ammonia and iodine drops.
We used to make that stuff by the pound. Years later, my mother's
best friend married the owner of the drug store we bought the ammonia
water from. He couldn't figure out what we were doing with gallons of
28% ammonia water. My mother asked and wished she had remained
ignorant. ;-)
Guest
On Friday, 9 September 2016 20:30:10 UTC+1, JW wrote:
a bigger cap should make it a minute
NT
a bigger cap should make it a minute
NT
Guest
On Friday, September 9, 2016 at 12:30:10 PM UTC-7, JW wrote:
I found a bookshelf amp with speakers that a neighbor was giving away for free. The built-in tape player makes an annoying noise on startup but it makes an amazing amp for the computer.
Maybe listen to music without quiet spots?
https://www.youtube.com/watch?v=mP0Ej28JeCs
Michael
I found a bookshelf amp with speakers that a neighbor was giving away for free. The built-in tape player makes an annoying noise on startup but it makes an amazing amp for the computer.
Maybe listen to music without quiet spots?
https://www.youtube.com/watch?v=mP0Ej28JeCs
Michael
J
Joerg
Guest
On 2016-09-09 15:05, tabbypurr@gmail.com wrote:
Probably a timing given by a micro processor. Then the only way to
defeat it is to inject a periodical signal that is above the audio range
but still recognizeable by the detector. Got to watch out that it
doesn't annoy animals though as they can often hear much higher
frequencies than we do.
--
Regards, Joerg
http://www.analogconsultants.com/
Probably a timing given by a micro processor. Then the only way to
defeat it is to inject a periodical signal that is above the audio range
but still recognizeable by the detector. Got to watch out that it
doesn't annoy animals though as they can often hear much higher
frequencies than we do.
--
Regards, Joerg
http://www.analogconsultants.com/
D
David Eather
Guest
On Sat, 10 Sep 2016 08:35:46 +1000, Joerg <news@analogconsultants.com>
wrote:
A simple picaxe monitoring the input and putting out a low level burst of
noise at 9 seconds would work - easy to knock up too. Could also be done
with some 555's (missing pulse detector) plus glue
wrote:
A simple picaxe monitoring the input and putting out a low level burst of
noise at 9 seconds would work - easy to knock up too. Could also be done
with some 555's (missing pulse detector) plus glue
Guest
And these same incompetent fucks are designing the electronics in new cars.
Anyone got a 1967 Chevy for sale ?
Anyone got a 1967 Chevy for sale ?
D
Don Y
Guest
On 9/10/2016 5:29 AM, jurb6006@gmail.com wrote:
> And these same incompetent fucks are designing the electronics in new cars.
Blame the PHB's who *select* the vendors to design the electronics!
It seems like a perfect example of a PHB not understanding the technology
yet being "responsible" for making the decisions regarding its use!
> And these same incompetent fucks are designing the electronics in new cars.
Blame the PHB's who *select* the vendors to design the electronics!
It seems like a perfect example of a PHB not understanding the technology
yet being "responsible" for making the decisions regarding its use!
J
Joerg
Guest
On 2016-09-09 17:25, David Eather wrote:
But that's too pedestrian and not sporty enough
A real manly solution would be a transistor stage in the shape of a
regenerative receiver, except that the stage is tuned to some really
high audio frequency instead of RF and is squegging into brief
oscillation bursts.
--
Regards, Joerg
http://www.analogconsultants.com/
But that's too pedestrian and not sporty enough
A real manly solution would be a transistor stage in the shape of a
regenerative receiver, except that the stage is tuned to some really
high audio frequency instead of RF and is squegging into brief
oscillation bursts.
--
Regards, Joerg
http://www.analogconsultants.com/
D
David Eather
Guest
On Sun, 11 Sep 2016 04:45:57 +1000, Joerg <news@analogconsultants.com>
wrote:
Yep - in my older age I've stopped being sporty - ever seen a 100kg man
run without a shirt (don't try to visualize - it's not good). My concern
with near/low ultrasonics were possible filters, a/d acquisition times and
driving the nearest dog/teenager mad. Hum..., put that way.... there could
be advantages.
wrote:
On 2016-09-09 17:25, David Eather wrote:
On Sat, 10 Sep 2016 08:35:46 +1000, Joerg <news@analogconsultants.com
wrote:
On 2016-09-09 15:05, tabbypurr@gmail.com wrote:
On Friday, 9 September 2016 20:30:10 UTC+1, JW wrote:
Bought this piece of junk at a garage sale.
https://www.amazon.co.uk/MIP108-I-Station-Speakers-Docking-Station-White/dp/B000G0G6K2
Sounds OK enough for what it is. Not using it with an iphone, I just
wanted something better sounding than my laptops built in speakers
on the
front porch for the summer.
The problem: If the thing doesn't detect any sound for about 10
seconds,
it goes into power management mode and cuts out the amp. If you're
listening to music that has quiet sections you'll get chunks of
audio cut
out of the music while the amp turns back on!
Good grief, the idiot engineer who designed this! I hope he got his
pink
slip.
Maybe this winter I'll open it up and see if there's a way to
disable this
"feature".
a bigger cap should make it a minute
Probably a timing given by a micro processor. Then the only way to
defeat it is to inject a periodical signal that is above the audio
range but still recognizeable by the detector. Got to watch out that
it doesn't annoy animals though as they can often hear much higher
frequencies than we do.
A simple picaxe monitoring the input and putting out a low level burst
of noise at 9 seconds would work - easy to knock up too. Could also be
done with some 555's (missing pulse detector) plus glue
But that's too pedestrian and not sporty enough
A real manly solution would be a transistor stage in the shape of a
regenerative receiver, except that the stage is tuned to some really
high audio frequency instead of RF and is squegging into brief
oscillation bursts.
Yep - in my older age I've stopped being sporty - ever seen a 100kg man
run without a shirt (don't try to visualize - it's not good). My concern
with near/low ultrasonics were possible filters, a/d acquisition times and
driving the nearest dog/teenager mad. Hum..., put that way.... there could
be advantages.
Guest
On Saturday, September 10, 2016 at 1:49:31 PM UTC-4, JW wrote:
That's not bad. Did you find out how the micro was detecting sound?
That's not bad. Did you find out how the micro was detecting sound?
J
Joerg
Guest
On 2016-09-10 18:37, David Eather wrote:
Don't stop. Becoming sedentary is a fast and at some point irreversible
path into a nursing home. Now that I am gradually approaching retirement
age I have upped my game when it comes to mileage on the mountain bike
and road bike. Once I can ratchet down to 3days/week or less I'll start
doing 80-100 milers, all day rides.
I regularly see such a guy on bike trips east. It is not a pretty sight.
Probably only a tiny amplitude is needed here and the speaker will have
very poor efficiency so not much gets through the chain. Also, one might
be able to simply use a continuously running oscillator which has the
least chance of disturbance.
--
Regards, Joerg
http://www.analogconsultants.com/
On Sun, 11 Sep 2016 04:45:57 +1000, Joerg <news@analogconsultants.com
wrote:
On 2016-09-09 17:25, David Eather wrote:
On Sat, 10 Sep 2016 08:35:46 +1000, Joerg <news@analogconsultants.com
wrote:
On 2016-09-09 15:05, tabbypurr@gmail.com wrote:
On Friday, 9 September 2016 20:30:10 UTC+1, JW wrote:
Bought this piece of junk at a garage sale.
https://www.amazon.co.uk/MIP108-I-Station-Speakers-Docking-Station-White/dp/B000G0G6K2
Sounds OK enough for what it is. Not using it with an iphone, I just
wanted something better sounding than my laptops built in speakers
on the
front porch for the summer.
The problem: If the thing doesn't detect any sound for about 10
seconds,
it goes into power management mode and cuts out the amp. If you're
listening to music that has quiet sections you'll get chunks of
audio cut
out of the music while the amp turns back on!
Good grief, the idiot engineer who designed this! I hope he got his
pink
slip.
Maybe this winter I'll open it up and see if there's a way to
disable this
"feature".
a bigger cap should make it a minute
Probably a timing given by a micro processor. Then the only way to
defeat it is to inject a periodical signal that is above the audio
range but still recognizeable by the detector. Got to watch out that
it doesn't annoy animals though as they can often hear much higher
frequencies than we do.
A simple picaxe monitoring the input and putting out a low level burst
of noise at 9 seconds would work - easy to knock up too. Could also be
done with some 555's (missing pulse detector) plus glue
But that's too pedestrian and not sporty enough
A real manly solution would be a transistor stage in the shape of a
regenerative receiver, except that the stage is tuned to some really
high audio frequency instead of RF and is squegging into brief
oscillation bursts.
Yep - in my older age I've stopped being sporty -
Don't stop. Becoming sedentary is a fast and at some point irreversible
path into a nursing home. Now that I am gradually approaching retirement
age I have upped my game when it comes to mileage on the mountain bike
and road bike. Once I can ratchet down to 3days/week or less I'll start
doing 80-100 milers, all day rides.
I regularly see such a guy on bike trips east. It is not a pretty sight.
Probably only a tiny amplitude is needed here and the speaker will have
very poor efficiency so not much gets through the chain. Also, one might
be able to simply use a continuously running oscillator which has the
least chance of disturbance.
--
Regards, Joerg
http://www.analogconsultants.com/
D
David Eather
Guest
On Mon, 12 Sep 2016 00:31:34 +1000, Joerg <news@analogconsultants.com>
wrote:
Not becoming sedentary is not a choice I can make. I do what I can but it
is a long way from bench pressing more than my body weight and squatting
almost double - plus fun with karate. I loved it. But I mustn't dwell or
the 'black dog' will come and bite me.
Now that I am gradually approaching retirement
It's strangely hypnotic.
Yes, it's like a lava lamp.
Mulder and Scully (Simpsons quote)
Just musing - a random noise source (pink or brown) might work well. If
the environment is loud enough it might even pass totally unnoticed.
wrote:
On 2016-09-10 18:37, David Eather wrote:
On Sun, 11 Sep 2016 04:45:57 +1000, Joerg <news@analogconsultants.com
wrote:
On 2016-09-09 17:25, David Eather wrote:
On Sat, 10 Sep 2016 08:35:46 +1000, Joerg <news@analogconsultants.com
wrote:
On 2016-09-09 15:05, tabbypurr@gmail.com wrote:
On Friday, 9 September 2016 20:30:10 UTC+1, JW wrote:
Bought this piece of junk at a garage sale.
https://www.amazon.co.uk/MIP108-I-Station-Speakers-Docking-Station-White/dp/B000G0G6K2
Sounds OK enough for what it is. Not using it with an iphone, I
just
wanted something better sounding than my laptops built in speakers
on the
front porch for the summer.
The problem: If the thing doesn't detect any sound for about 10
seconds,
it goes into power management mode and cuts out the amp. If you're
listening to music that has quiet sections you'll get chunks of
audio cut
out of the music while the amp turns back on!
Good grief, the idiot engineer who designed this! I hope he got his
pink
slip.
Maybe this winter I'll open it up and see if there's a way to
disable this
"feature".
a bigger cap should make it a minute
Probably a timing given by a micro processor. Then the only way to
defeat it is to inject a periodical signal that is above the audio
range but still recognizeable by the detector. Got to watch out that
it doesn't annoy animals though as they can often hear much higher
frequencies than we do.
A simple picaxe monitoring the input and putting out a low level burst
of noise at 9 seconds would work - easy to knock up too. Could also be
done with some 555's (missing pulse detector) plus glue
But that's too pedestrian and not sporty enough
A real manly solution would be a transistor stage in the shape of a
regenerative receiver, except that the stage is tuned to some really
high audio frequency instead of RF and is squegging into brief
oscillation bursts.
Yep - in my older age I've stopped being sporty -
Don't stop. Becoming sedentary is a fast and at some point irreversible
path into a nursing home.
Not becoming sedentary is not a choice I can make. I do what I can but it
is a long way from bench pressing more than my body weight and squatting
almost double - plus fun with karate. I loved it. But I mustn't dwell or
the 'black dog' will come and bite me.
Now that I am gradually approaching retirement
It's strangely hypnotic.
Yes, it's like a lava lamp.
Mulder and Scully (Simpsons quote)
Just musing - a random noise source (pink or brown) might work well. If
the environment is loud enough it might even pass totally unnoticed.