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server
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https://www.dropbox.com/s/wyd29ukhfm27rsj/Binary_CW_Multplier.jpg?raw=1
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A
Anthony William Sloman
Guest
On Tuesday, July 26, 2022 at 11:27:57 AM UTC+10, jla...@highlandsniptechnology.com wrote:
> https://www.dropbox.com/s/wyd29ukhfm27rsj/Binary_CW_Multplier.jpg?raw=1
https://en.wikipedia.org/wiki/Cockcroft%E2%80%93Walton_generator
If you are going to re-invent the wheel, find a better name for it. Voltage doubler is less pretentious than \"binary voltage multiplier\".
--
Bill Sloman, Sydney
> https://www.dropbox.com/s/wyd29ukhfm27rsj/Binary_CW_Multplier.jpg?raw=1
https://en.wikipedia.org/wiki/Cockcroft%E2%80%93Walton_generator
If you are going to re-invent the wheel, find a better name for it. Voltage doubler is less pretentious than \"binary voltage multiplier\".
--
Bill Sloman, Sydney
J
John Robertson
Guest
On 2022/07/25 6:44 p.m., Anthony William Sloman wrote:
Well, he is getting more than double the voltage out of the Walton
generator, depending on which switches are closed. I\'ve called this a
charge pump supply, but perhaps I was using the wrong name. Nice to know
the actual name of this style of voltage multiplier.
Someone should ask \"Kathy Loves Physics\" (youtube) to do an episode on
the voltage multiplier as most of her presentations relate to electricity...
John :-#)#
On Tuesday, July 26, 2022 at 11:27:57 AM UTC+10, jla...@highlandsniptechnology.com wrote:
https://www.dropbox.com/s/wyd29ukhfm27rsj/Binary_CW_Multplier.jpg?raw=1
https://en.wikipedia.org/wiki/Cockcroft%E2%80%93Walton_generator
If you are going to re-invent the wheel, find a better name for it. Voltage doubler is less pretentious than \"binary voltage multiplier\".
Well, he is getting more than double the voltage out of the Walton
generator, depending on which switches are closed. I\'ve called this a
charge pump supply, but perhaps I was using the wrong name. Nice to know
the actual name of this style of voltage multiplier.
Someone should ask \"Kathy Loves Physics\" (youtube) to do an episode on
the voltage multiplier as most of her presentations relate to electricity...
John :-#)#
P
Phil Hobbs
Guest
jlarkin@highlandsniptechnology.com wrote:
with N stages. (Does require using the relays for commutation, of course.)
Cheers
Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510
http://electrooptical.net
http://hobbs-eo.com
Fun. Of course with the right parts, you can do 2**N multiplicationhttps://www.dropbox.com/s/wyd29ukhfm27rsj/Binary_CW_Multplier.jpg?raw=1
with N stages. (Does require using the relays for commutation, of course.)
Cheers
Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510
http://electrooptical.net
http://hobbs-eo.com
S
server
Guest
On Tue, 26 Jul 2022 08:58:39 -0400, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:
This circuit can do a 2^N step high-voltage supply with N low voltage,
cheap telecom relays. Maybe an incremental linear reg could
interpolate between the steps.
I probably won\'t actually do this, unless a certain customer gets
serious, which is unlikely. I was just doodling.
We could go into the multichannel high-voltage supply business with
our new power rack, but lots of people are in that biz already.
<pcdhSpamMeSenseless@electrooptical.net> wrote:
jlarkin@highlandsniptechnology.com wrote:
https://www.dropbox.com/s/wyd29ukhfm27rsj/Binary_CW_Multplier.jpg?raw=1
Fun. Of course with the right parts, you can do 2**N multiplication
with N stages. (Does require using the relays for commutation, of course.)
Cheers
Phil Hobbs
This circuit can do a 2^N step high-voltage supply with N low voltage,
cheap telecom relays. Maybe an incremental linear reg could
interpolate between the steps.
I probably won\'t actually do this, unless a certain customer gets
serious, which is unlikely. I was just doodling.
We could go into the multichannel high-voltage supply business with
our new power rack, but lots of people are in that biz already.
L
Lasse Langwadt Christensen
Guest
tirsdag den 26. juli 2022 kl. 15.59.31 UTC+2 skrev jla...@highlandsniptechnology.com:
regulate the input?
On Tue, 26 Jul 2022 08:58:39 -0400, Phil Hobbs
pcdhSpamM...@electrooptical.net> wrote:
jla...@highlandsniptechnology.com wrote:
https://www.dropbox.com/s/wyd29ukhfm27rsj/Binary_CW_Multplier.jpg?raw=1
Fun. Of course with the right parts, you can do 2**N multiplication
with N stages. (Does require using the relays for commutation, of course.)
Cheers
Phil Hobbs
This circuit can do a 2^N step high-voltage supply with N low voltage,
cheap telecom relays. Maybe an incremental linear reg could
interpolate between the steps.
regulate the input?
S
server
Guest
On Tue, 26 Jul 2022 07:03:38 -0700 (PDT), Lasse Langwadt Christensen
<langwadt@fonz.dk> wrote:
Sure. The source could be something like an LTC3803 (geat part) and a
standard transformer, one of the DRQ things.
We had one inquiry for a HV supply that was pretty time-agile, which
would need a linear reg.
Frankly, I\'d rather not be in the HV business. Too much to go wrong.
This stepped C-W was just a goofy idea.
<langwadt@fonz.dk> wrote:
tirsdag den 26. juli 2022 kl. 15.59.31 UTC+2 skrev jla...@highlandsniptechnology.com:
On Tue, 26 Jul 2022 08:58:39 -0400, Phil Hobbs
pcdhSpamM...@electrooptical.net> wrote:
jla...@highlandsniptechnology.com wrote:
https://www.dropbox.com/s/wyd29ukhfm27rsj/Binary_CW_Multplier.jpg?raw=1
Fun. Of course with the right parts, you can do 2**N multiplication
with N stages. (Does require using the relays for commutation, of course.)
Cheers
Phil Hobbs
This circuit can do a 2^N step high-voltage supply with N low voltage,
cheap telecom relays. Maybe an incremental linear reg could
interpolate between the steps.
regulate the input?
Sure. The source could be something like an LTC3803 (geat part) and a
standard transformer, one of the DRQ things.
We had one inquiry for a HV supply that was pretty time-agile, which
would need a linear reg.
Frankly, I\'d rather not be in the HV business. Too much to go wrong.
This stepped C-W was just a goofy idea.
P
Phil Hobbs
Guest
jlarkin@highlandsniptechnology.com wrote:
You still only get N-times multiplication at most, though. The 2**N
multiplication scheme runs each voltage doubler off the output of the
previous one.
Cheers
Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510
http://electrooptical.net
http://hobbs-eo.com
On Tue, 26 Jul 2022 08:58:39 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:
jlarkin@highlandsniptechnology.com wrote:
https://www.dropbox.com/s/wyd29ukhfm27rsj/Binary_CW_Multplier.jpg?raw=1
Fun. Of course with the right parts, you can do 2**N multiplication
with N stages. (Does require using the relays for commutation, of course.)
Cheers
Phil Hobbs
This circuit can do a 2^N step high-voltage supply with N low voltage,
cheap telecom relays. Maybe an incremental linear reg could
interpolate between the steps.
I probably won\'t actually do this, unless a certain customer gets
serious, which is unlikely. I was just doodling.
We could go into the multichannel high-voltage supply business with
our new power rack, but lots of people are in that biz already.
You still only get N-times multiplication at most, though. The 2**N
multiplication scheme runs each voltage doubler off the output of the
previous one.
Cheers
Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510
http://electrooptical.net
http://hobbs-eo.com
P
Phil Hobbs
Guest
Phil Hobbs wrote:
(We\'re using different definitions of N here, of course--I\'m talking N
CW sections and you\'re talking N relays, with the nth one switching 2^n
sections, for 0 <= n < N.)
Cheers
Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510
http://electrooptical.net
http://hobbs-eo.com
jlarkin@highlandsniptechnology.com wrote:
On Tue, 26 Jul 2022 08:58:39 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:
jlarkin@highlandsniptechnology.com wrote:
https://www.dropbox.com/s/wyd29ukhfm27rsj/Binary_CW_Multplier.jpg?raw=1
Fun. Of course with the right parts, you can do 2**N multiplication
with N stages. (Does require using the relays for commutation, of
course.)
Cheers
Phil Hobbs
This circuit can do a 2^N step high-voltage supply with N low voltage,
cheap telecom relays. Maybe an incremental linear reg could
interpolate between the steps.
I probably won\'t actually do this, unless a certain customer gets
serious, which is unlikely. I was just doodling.
We could go into the multichannel high-voltage supply business with
our new power rack, but lots of people are in that biz already.
You still only get N-times multiplication at most, though. The 2**N
multiplication scheme runs each voltage doubler off the output of the
previous one.
(We\'re using different definitions of N here, of course--I\'m talking N
CW sections and you\'re talking N relays, with the nth one switching 2^n
sections, for 0 <= n < N.)
Cheers
Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510
http://electrooptical.net
http://hobbs-eo.com
B
bitrex
Guest
On 7/26/2022 10:19 AM, jlarkin@highlandsniptechnology.com wrote:
<https://imgur.com/a/XRoYq2V>
I _think_ I got the dots right...
On Tue, 26 Jul 2022 07:03:38 -0700 (PDT), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:
tirsdag den 26. juli 2022 kl. 15.59.31 UTC+2 skrev jla...@highlandsniptechnology.com:
On Tue, 26 Jul 2022 08:58:39 -0400, Phil Hobbs
pcdhSpamM...@electrooptical.net> wrote:
jla...@highlandsniptechnology.com wrote:
https://www.dropbox.com/s/wyd29ukhfm27rsj/Binary_CW_Multplier.jpg?raw=1
Fun. Of course with the right parts, you can do 2**N multiplication
with N stages. (Does require using the relays for commutation, of course.)
Cheers
Phil Hobbs
This circuit can do a 2^N step high-voltage supply with N low voltage,
cheap telecom relays. Maybe an incremental linear reg could
interpolate between the steps.
regulate the input?
Sure. The source could be something like an LTC3803 (geat part) and a
standard transformer, one of the DRQ things.
We had one inquiry for a HV supply that was pretty time-agile, which
would need a linear reg.
Frankly, I\'d rather not be in the HV business. Too much to go wrong.
This stepped C-W was just a goofy idea.
This topology uses isolation transformers with dual secondaries:
<https://imgur.com/a/XRoYq2V>
I _think_ I got the dots right...
S
server
Guest
On Tue, 26 Jul 2022 21:53:08 -0400, bitrex <user@example.net> wrote:
I think that untangles into a 360 volt transformer and a half-wave
doubler.
Lately we don\'t run line AC into boxes, or use line frequency
transformers. Too many safety and compliance isues, too much weight
and cost.
On 7/26/2022 10:19 AM, jlarkin@highlandsniptechnology.com wrote:
On Tue, 26 Jul 2022 07:03:38 -0700 (PDT), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:
tirsdag den 26. juli 2022 kl. 15.59.31 UTC+2 skrev jla...@highlandsniptechnology.com:
On Tue, 26 Jul 2022 08:58:39 -0400, Phil Hobbs
pcdhSpamM...@electrooptical.net> wrote:
jla...@highlandsniptechnology.com wrote:
https://www.dropbox.com/s/wyd29ukhfm27rsj/Binary_CW_Multplier.jpg?raw=1
Fun. Of course with the right parts, you can do 2**N multiplication
with N stages. (Does require using the relays for commutation, of course.)
Cheers
Phil Hobbs
This circuit can do a 2^N step high-voltage supply with N low voltage,
cheap telecom relays. Maybe an incremental linear reg could
interpolate between the steps.
regulate the input?
Sure. The source could be something like an LTC3803 (geat part) and a
standard transformer, one of the DRQ things.
We had one inquiry for a HV supply that was pretty time-agile, which
would need a linear reg.
Frankly, I\'d rather not be in the HV business. Too much to go wrong.
This stepped C-W was just a goofy idea.
This topology uses isolation transformers with dual secondaries:
https://imgur.com/a/XRoYq2V
I _think_ I got the dots right...
I think that untangles into a 360 volt transformer and a half-wave
doubler.
Lately we don\'t run line AC into boxes, or use line frequency
transformers. Too many safety and compliance isues, too much weight
and cost.
B
bitrex
Guest
On 7/27/2022 5:08 AM, jlarkin@highlandsniptechnology.com wrote:
Ya that sounds right. An old trick in the National Semi handbook from
the 70s I think it was, for regulation on the secondary is to wrap an
LM317 inside the grid to cathode voltage of a power triode and that
works OK for regulating up to a couple kV at low currents without too
much thought on how to provide an appropriate reference and error amp
for the potentials on that side.
Long lead times on many N fets with Vds > 1kV, not surprising I guess.
Yep. Laptop-style external bricks in 24-ish and 48 volts are pretty
readily available up to 100 watts or so and those CUI-type modules can
take you most places you need to go initially from there, on the board.
The client can use their UL-listed off-line PSU of choice if that\'s
important to them.
I forget exactly how many units UL wants to test to destruction these
days just as a minimum requirement for a cert I think it\'s at least three.
On Tue, 26 Jul 2022 21:53:08 -0400, bitrex <user@example.net> wrote:
On 7/26/2022 10:19 AM, jlarkin@highlandsniptechnology.com wrote:
On Tue, 26 Jul 2022 07:03:38 -0700 (PDT), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:
tirsdag den 26. juli 2022 kl. 15.59.31 UTC+2 skrev jla...@highlandsniptechnology.com:
On Tue, 26 Jul 2022 08:58:39 -0400, Phil Hobbs
pcdhSpamM...@electrooptical.net> wrote:
jla...@highlandsniptechnology.com wrote:
https://www.dropbox.com/s/wyd29ukhfm27rsj/Binary_CW_Multplier.jpg?raw=1
Fun. Of course with the right parts, you can do 2**N multiplication
with N stages. (Does require using the relays for commutation, of course.)
Cheers
Phil Hobbs
This circuit can do a 2^N step high-voltage supply with N low voltage,
cheap telecom relays. Maybe an incremental linear reg could
interpolate between the steps.
regulate the input?
Sure. The source could be something like an LTC3803 (geat part) and a
standard transformer, one of the DRQ things.
We had one inquiry for a HV supply that was pretty time-agile, which
would need a linear reg.
Frankly, I\'d rather not be in the HV business. Too much to go wrong.
This stepped C-W was just a goofy idea.
This topology uses isolation transformers with dual secondaries:
https://imgur.com/a/XRoYq2V
I _think_ I got the dots right...
I think that untangles into a 360 volt transformer and a half-wave
doubler.
Ya that sounds right. An old trick in the National Semi handbook from
the 70s I think it was, for regulation on the secondary is to wrap an
LM317 inside the grid to cathode voltage of a power triode and that
works OK for regulating up to a couple kV at low currents without too
much thought on how to provide an appropriate reference and error amp
for the potentials on that side.
Long lead times on many N fets with Vds > 1kV, not surprising I guess.
Lately we don\'t run line AC into boxes, or use line frequency
transformers. Too many safety and compliance isues, too much weight
and cost.
Yep. Laptop-style external bricks in 24-ish and 48 volts are pretty
readily available up to 100 watts or so and those CUI-type modules can
take you most places you need to go initially from there, on the board.
The client can use their UL-listed off-line PSU of choice if that\'s
important to them.
I forget exactly how many units UL wants to test to destruction these
days just as a minimum requirement for a cert I think it\'s at least three.
L
Lasse Langwadt Christensen
Guest
torsdag den 28. juli 2022 kl. 02.54.38 UTC+2 skrev bitrex:
much more than that, e.g. https://www.digikey.dk/en/products/detail/mean-well-usa-inc/GST280A24-C6P/7703684
On 7/27/2022 5:08 AM, jla...@highlandsniptechnology.com wrote:
On Tue, 26 Jul 2022 21:53:08 -0400, bitrex <us...@example.net> wrote:
On 7/26/2022 10:19 AM, jla...@highlandsniptechnology.com wrote:
On Tue, 26 Jul 2022 07:03:38 -0700 (PDT), Lasse Langwadt Christensen
lang...@fonz.dk> wrote:
tirsdag den 26. juli 2022 kl. 15.59.31 UTC+2 skrev jla...@highlandsniptechnology.com:
On Tue, 26 Jul 2022 08:58:39 -0400, Phil Hobbs
pcdhSpamM...@electrooptical.net> wrote:
jla...@highlandsniptechnology.com wrote:
https://www.dropbox.com/s/wyd29ukhfm27rsj/Binary_CW_Multplier.jpg?raw=1
Fun. Of course with the right parts, you can do 2**N multiplication
with N stages. (Does require using the relays for commutation, of course.)
Cheers
Phil Hobbs
This circuit can do a 2^N step high-voltage supply with N low voltage,
cheap telecom relays. Maybe an incremental linear reg could
interpolate between the steps.
regulate the input?
Sure. The source could be something like an LTC3803 (geat part) and a
standard transformer, one of the DRQ things.
We had one inquiry for a HV supply that was pretty time-agile, which
would need a linear reg.
Frankly, I\'d rather not be in the HV business. Too much to go wrong.
This stepped C-W was just a goofy idea.
This topology uses isolation transformers with dual secondaries:
https://imgur.com/a/XRoYq2V
I _think_ I got the dots right...
I think that untangles into a 360 volt transformer and a half-wave
doubler.
Ya that sounds right. An old trick in the National Semi handbook from
the 70s I think it was, for regulation on the secondary is to wrap an
LM317 inside the grid to cathode voltage of a power triode and that
works OK for regulating up to a couple kV at low currents without too
much thought on how to provide an appropriate reference and error amp
for the potentials on that side.
Long lead times on many N fets with Vds > 1kV, not surprising I guess.
Lately we don\'t run line AC into boxes, or use line frequency
transformers. Too many safety and compliance isues, too much weight
and cost.
Yep. Laptop-style external bricks in 24-ish and 48 volts are pretty
readily available up to 100 watts or so
much more than that, e.g. https://www.digikey.dk/en/products/detail/mean-well-usa-inc/GST280A24-C6P/7703684
B
bitrex
Guest
On 7/28/2022 2:35 AM, Lasse Langwadt Christensen wrote:
Dat\'s a beefy brick.
The downside from a user\'s perspective is once you start trying to rack
up a number of boxes with wall warts and external bricks you start
wishing they had internal PSUs again, kettle leads and IECs are much
more pleasant from a cable management perspective
torsdag den 28. juli 2022 kl. 02.54.38 UTC+2 skrev bitrex:
On 7/27/2022 5:08 AM, jla...@highlandsniptechnology.com wrote:
On Tue, 26 Jul 2022 21:53:08 -0400, bitrex <us...@example.net> wrote:
On 7/26/2022 10:19 AM, jla...@highlandsniptechnology.com wrote:
On Tue, 26 Jul 2022 07:03:38 -0700 (PDT), Lasse Langwadt Christensen
lang...@fonz.dk> wrote:
tirsdag den 26. juli 2022 kl. 15.59.31 UTC+2 skrev jla...@highlandsniptechnology.com:
On Tue, 26 Jul 2022 08:58:39 -0400, Phil Hobbs
pcdhSpamM...@electrooptical.net> wrote:
jla...@highlandsniptechnology.com wrote:
https://www.dropbox.com/s/wyd29ukhfm27rsj/Binary_CW_Multplier.jpg?raw=1
Fun. Of course with the right parts, you can do 2**N multiplication
with N stages. (Does require using the relays for commutation, of course.)
Cheers
Phil Hobbs
This circuit can do a 2^N step high-voltage supply with N low voltage,
cheap telecom relays. Maybe an incremental linear reg could
interpolate between the steps.
regulate the input?
Sure. The source could be something like an LTC3803 (geat part) and a
standard transformer, one of the DRQ things.
We had one inquiry for a HV supply that was pretty time-agile, which
would need a linear reg.
Frankly, I\'d rather not be in the HV business. Too much to go wrong.
This stepped C-W was just a goofy idea.
This topology uses isolation transformers with dual secondaries:
https://imgur.com/a/XRoYq2V
I _think_ I got the dots right...
I think that untangles into a 360 volt transformer and a half-wave
doubler.
Ya that sounds right. An old trick in the National Semi handbook from
the 70s I think it was, for regulation on the secondary is to wrap an
LM317 inside the grid to cathode voltage of a power triode and that
works OK for regulating up to a couple kV at low currents without too
much thought on how to provide an appropriate reference and error amp
for the potentials on that side.
Long lead times on many N fets with Vds > 1kV, not surprising I guess.
Lately we don\'t run line AC into boxes, or use line frequency
transformers. Too many safety and compliance isues, too much weight
and cost.
Yep. Laptop-style external bricks in 24-ish and 48 volts are pretty
readily available up to 100 watts or so
much more than that, e.g. https://www.digikey.dk/en/products/detail/mean-well-usa-inc/GST280A24-C6P/7703684
Dat\'s a beefy brick.
The downside from a user\'s perspective is once you start trying to rack
up a number of boxes with wall warts and external bricks you start
wishing they had internal PSUs again, kettle leads and IECs are much
more pleasant from a cable management perspective
S
server
Guest
On Wed, 27 Jul 2022 23:35:12 -0700 (PDT), Lasse Langwadt Christensen
<langwadt@fonz.dk> wrote:
Phihomg and MeanWell make warts (big plugs) at 60 watts.
<langwadt@fonz.dk> wrote:
torsdag den 28. juli 2022 kl. 02.54.38 UTC+2 skrev bitrex:
On 7/27/2022 5:08 AM, jla...@highlandsniptechnology.com wrote:
On Tue, 26 Jul 2022 21:53:08 -0400, bitrex <us...@example.net> wrote:
On 7/26/2022 10:19 AM, jla...@highlandsniptechnology.com wrote:
On Tue, 26 Jul 2022 07:03:38 -0700 (PDT), Lasse Langwadt Christensen
lang...@fonz.dk> wrote:
tirsdag den 26. juli 2022 kl. 15.59.31 UTC+2 skrev jla...@highlandsniptechnology.com:
On Tue, 26 Jul 2022 08:58:39 -0400, Phil Hobbs
pcdhSpamM...@electrooptical.net> wrote:
jla...@highlandsniptechnology.com wrote:
https://www.dropbox.com/s/wyd29ukhfm27rsj/Binary_CW_Multplier.jpg?raw=1
Fun. Of course with the right parts, you can do 2**N multiplication
with N stages. (Does require using the relays for commutation, of course.)
Cheers
Phil Hobbs
This circuit can do a 2^N step high-voltage supply with N low voltage,
cheap telecom relays. Maybe an incremental linear reg could
interpolate between the steps.
regulate the input?
Sure. The source could be something like an LTC3803 (geat part) and a
standard transformer, one of the DRQ things.
We had one inquiry for a HV supply that was pretty time-agile, which
would need a linear reg.
Frankly, I\'d rather not be in the HV business. Too much to go wrong.
This stepped C-W was just a goofy idea.
This topology uses isolation transformers with dual secondaries:
https://imgur.com/a/XRoYq2V
I _think_ I got the dots right...
I think that untangles into a 360 volt transformer and a half-wave
doubler.
Ya that sounds right. An old trick in the National Semi handbook from
the 70s I think it was, for regulation on the secondary is to wrap an
LM317 inside the grid to cathode voltage of a power triode and that
works OK for regulating up to a couple kV at low currents without too
much thought on how to provide an appropriate reference and error amp
for the potentials on that side.
Long lead times on many N fets with Vds > 1kV, not surprising I guess.
Lately we don\'t run line AC into boxes, or use line frequency
transformers. Too many safety and compliance isues, too much weight
and cost.
Yep. Laptop-style external bricks in 24-ish and 48 volts are pretty
readily available up to 100 watts or so
much more than that, e.g. https://www.digikey.dk/en/products/detail/mean-well-usa-inc/GST280A24-C6P/7703684
Phihomg and MeanWell make warts (big plugs) at 60 watts.
P
Phil Hobbs
Guest
jlarkin@highlandsniptechnology.com wrote:
All you need is a power bar with the outlets in the right orientation.
The one over my bench is a very nice 20x Tripplite one, with filtering
and MOVs, but the prongs are oriented horizontally, so that most warts
take up two spaces.
Cheers
Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510
http://electrooptical.net
http://hobbs-eo.com
On Wed, 27 Jul 2022 23:35:12 -0700 (PDT), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:
torsdag den 28. juli 2022 kl. 02.54.38 UTC+2 skrev bitrex:
On 7/27/2022 5:08 AM, jla...@highlandsniptechnology.com wrote:
On Tue, 26 Jul 2022 21:53:08 -0400, bitrex <us...@example.net> wrote:
On 7/26/2022 10:19 AM, jla...@highlandsniptechnology.com wrote:
On Tue, 26 Jul 2022 07:03:38 -0700 (PDT), Lasse Langwadt Christensen
lang...@fonz.dk> wrote:
tirsdag den 26. juli 2022 kl. 15.59.31 UTC+2 skrev jla...@highlandsniptechnology.com:
On Tue, 26 Jul 2022 08:58:39 -0400, Phil Hobbs
pcdhSpamM...@electrooptical.net> wrote:
jla...@highlandsniptechnology.com wrote:
https://www.dropbox.com/s/wyd29ukhfm27rsj/Binary_CW_Multplier.jpg?raw=1
Fun. Of course with the right parts, you can do 2**N multiplication
with N stages. (Does require using the relays for commutation, of course.)
Cheers
Phil Hobbs
This circuit can do a 2^N step high-voltage supply with N low voltage,
cheap telecom relays. Maybe an incremental linear reg could
interpolate between the steps.
regulate the input?
Sure. The source could be something like an LTC3803 (geat part) and a
standard transformer, one of the DRQ things.
We had one inquiry for a HV supply that was pretty time-agile, which
would need a linear reg.
Frankly, I\'d rather not be in the HV business. Too much to go wrong.
This stepped C-W was just a goofy idea.
This topology uses isolation transformers with dual secondaries:
https://imgur.com/a/XRoYq2V
I _think_ I got the dots right...
I think that untangles into a 360 volt transformer and a half-wave
doubler.
Ya that sounds right. An old trick in the National Semi handbook from
the 70s I think it was, for regulation on the secondary is to wrap an
LM317 inside the grid to cathode voltage of a power triode and that
works OK for regulating up to a couple kV at low currents without too
much thought on how to provide an appropriate reference and error amp
for the potentials on that side.
Long lead times on many N fets with Vds > 1kV, not surprising I guess.
Lately we don\'t run line AC into boxes, or use line frequency
transformers. Too many safety and compliance isues, too much weight
and cost.
Yep. Laptop-style external bricks in 24-ish and 48 volts are pretty
readily available up to 100 watts or so
much more than that, e.g. https://www.digikey.dk/en/products/detail/mean-well-usa-inc/GST280A24-C6P/7703684
Phihomg and MeanWell make warts (big plugs) at 60 watts.
All you need is a power bar with the outlets in the right orientation.
The one over my bench is a very nice 20x Tripplite one, with filtering
and MOVs, but the prongs are oriented horizontally, so that most warts
take up two spaces.
Cheers
Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510
http://electrooptical.net
http://hobbs-eo.com
L
Lasse Langwadt Christensen
Guest
torsdag den 28. juli 2022 kl. 16.23.22 UTC+2 skrev jla...@highlandsniptechnology.com:
lots of 65W USB-C chargers like this: https://www.pricerunner.dk/product/640x640/3002755304/Baseus-GaN2-Lite-Quick-Charge-Travel-Charger.jpg
On Wed, 27 Jul 2022 23:35:12 -0700 (PDT), Lasse Langwadt Christensen
lang...@fonz.dk> wrote:
torsdag den 28. juli 2022 kl. 02.54.38 UTC+2 skrev bitrex:
On 7/27/2022 5:08 AM, jla...@highlandsniptechnology.com wrote:
On Tue, 26 Jul 2022 21:53:08 -0400, bitrex <us...@example.net> wrote:
On 7/26/2022 10:19 AM, jla...@highlandsniptechnology.com wrote:
On Tue, 26 Jul 2022 07:03:38 -0700 (PDT), Lasse Langwadt Christensen
lang...@fonz.dk> wrote:
tirsdag den 26. juli 2022 kl. 15.59.31 UTC+2 skrev jla...@highlandsniptechnology.com:
On Tue, 26 Jul 2022 08:58:39 -0400, Phil Hobbs
pcdhSpamM...@electrooptical.net> wrote:
jla...@highlandsniptechnology.com wrote:
https://www.dropbox.com/s/wyd29ukhfm27rsj/Binary_CW_Multplier.jpg?raw=1
Fun. Of course with the right parts, you can do 2**N multiplication
with N stages. (Does require using the relays for commutation, of course.)
Cheers
Phil Hobbs
This circuit can do a 2^N step high-voltage supply with N low voltage,
cheap telecom relays. Maybe an incremental linear reg could
interpolate between the steps.
regulate the input?
Sure. The source could be something like an LTC3803 (geat part) and a
standard transformer, one of the DRQ things.
We had one inquiry for a HV supply that was pretty time-agile, which
would need a linear reg.
Frankly, I\'d rather not be in the HV business. Too much to go wrong.
This stepped C-W was just a goofy idea.
This topology uses isolation transformers with dual secondaries:
https://imgur.com/a/XRoYq2V
I _think_ I got the dots right...
I think that untangles into a 360 volt transformer and a half-wave
doubler.
Ya that sounds right. An old trick in the National Semi handbook from
the 70s I think it was, for regulation on the secondary is to wrap an
LM317 inside the grid to cathode voltage of a power triode and that
works OK for regulating up to a couple kV at low currents without too
much thought on how to provide an appropriate reference and error amp
for the potentials on that side.
Long lead times on many N fets with Vds > 1kV, not surprising I guess.
Lately we don\'t run line AC into boxes, or use line frequency
transformers. Too many safety and compliance isues, too much weight
and cost.
Yep. Laptop-style external bricks in 24-ish and 48 volts are pretty
readily available up to 100 watts or so
much more than that, e.g. https://www.digikey.dk/en/products/detail/mean-well-usa-inc/GST280A24-C6P/7703684
Phihomg and MeanWell make warts (big plugs) at 60 watts.
lots of 65W USB-C chargers like this: https://www.pricerunner.dk/product/640x640/3002755304/Baseus-GaN2-Lite-Quick-Charge-Travel-Charger.jpg
S
server
Guest
On Thu, 28 Jul 2022 10:46:12 -0400, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:
We\'re shipping rackmount boxes to a big govt facility. They have a
group in charge of safety and compliance and all that stuff and would
have set us back 6 months and maybe $40K in lab fees if we ran AC into
the box. An external 24 volt 2.5-amp laptop-type supply just fixed the
problem... no complaints from the users.
https://www.dropbox.com/s/vjzhoths9v55gpq/Man_Front_1.jpg?raw=1
It pulls about 2 amps until the giant EOM oven heats up, maybe 15
minutes.
The power connector on the back is the usual barrel, but it\'s threaded
for optional mechanical locking.
<pcdhSpamMeSenseless@electrooptical.net> wrote:
jlarkin@highlandsniptechnology.com wrote:
On Wed, 27 Jul 2022 23:35:12 -0700 (PDT), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:
torsdag den 28. juli 2022 kl. 02.54.38 UTC+2 skrev bitrex:
On 7/27/2022 5:08 AM, jla...@highlandsniptechnology.com wrote:
On Tue, 26 Jul 2022 21:53:08 -0400, bitrex <us...@example.net> wrote:
On 7/26/2022 10:19 AM, jla...@highlandsniptechnology.com wrote:
On Tue, 26 Jul 2022 07:03:38 -0700 (PDT), Lasse Langwadt Christensen
lang...@fonz.dk> wrote:
tirsdag den 26. juli 2022 kl. 15.59.31 UTC+2 skrev jla...@highlandsniptechnology.com:
On Tue, 26 Jul 2022 08:58:39 -0400, Phil Hobbs
pcdhSpamM...@electrooptical.net> wrote:
jla...@highlandsniptechnology.com wrote:
https://www.dropbox.com/s/wyd29ukhfm27rsj/Binary_CW_Multplier.jpg?raw=1
Fun. Of course with the right parts, you can do 2**N multiplication
with N stages. (Does require using the relays for commutation, of course.)
Cheers
Phil Hobbs
This circuit can do a 2^N step high-voltage supply with N low voltage,
cheap telecom relays. Maybe an incremental linear reg could
interpolate between the steps.
regulate the input?
Sure. The source could be something like an LTC3803 (geat part) and a
standard transformer, one of the DRQ things.
We had one inquiry for a HV supply that was pretty time-agile, which
would need a linear reg.
Frankly, I\'d rather not be in the HV business. Too much to go wrong.
This stepped C-W was just a goofy idea.
This topology uses isolation transformers with dual secondaries:
https://imgur.com/a/XRoYq2V
I _think_ I got the dots right...
I think that untangles into a 360 volt transformer and a half-wave
doubler.
Ya that sounds right. An old trick in the National Semi handbook from
the 70s I think it was, for regulation on the secondary is to wrap an
LM317 inside the grid to cathode voltage of a power triode and that
works OK for regulating up to a couple kV at low currents without too
much thought on how to provide an appropriate reference and error amp
for the potentials on that side.
Long lead times on many N fets with Vds > 1kV, not surprising I guess.
Lately we don\'t run line AC into boxes, or use line frequency
transformers. Too many safety and compliance isues, too much weight
and cost.
Yep. Laptop-style external bricks in 24-ish and 48 volts are pretty
readily available up to 100 watts or so
much more than that, e.g. https://www.digikey.dk/en/products/detail/mean-well-usa-inc/GST280A24-C6P/7703684
Phihomg and MeanWell make warts (big plugs) at 60 watts.
All you need is a power bar with the outlets in the right orientation.
The one over my bench is a very nice 20x Tripplite one, with filtering
and MOVs, but the prongs are oriented horizontally, so that most warts
take up two spaces.
Cheers
Phil Hobbs
We\'re shipping rackmount boxes to a big govt facility. They have a
group in charge of safety and compliance and all that stuff and would
have set us back 6 months and maybe $40K in lab fees if we ran AC into
the box. An external 24 volt 2.5-amp laptop-type supply just fixed the
problem... no complaints from the users.
https://www.dropbox.com/s/vjzhoths9v55gpq/Man_Front_1.jpg?raw=1
It pulls about 2 amps until the giant EOM oven heats up, maybe 15
minutes.
The power connector on the back is the usual barrel, but it\'s threaded
for optional mechanical locking.
S
server
Guest
On Thu, 28 Jul 2022 08:33:17 -0700 (PDT), Lasse Langwadt Christensen
<langwadt@fonz.dk> wrote:
Yikes. GaN fets are changing things. I wonder what the switching
frequency is.
What\'s the output voltage? Surely not 5.
<langwadt@fonz.dk> wrote:
torsdag den 28. juli 2022 kl. 16.23.22 UTC+2 skrev jla...@highlandsniptechnology.com:
On Wed, 27 Jul 2022 23:35:12 -0700 (PDT), Lasse Langwadt Christensen
lang...@fonz.dk> wrote:
torsdag den 28. juli 2022 kl. 02.54.38 UTC+2 skrev bitrex:
On 7/27/2022 5:08 AM, jla...@highlandsniptechnology.com wrote:
On Tue, 26 Jul 2022 21:53:08 -0400, bitrex <us...@example.net> wrote:
On 7/26/2022 10:19 AM, jla...@highlandsniptechnology.com wrote:
On Tue, 26 Jul 2022 07:03:38 -0700 (PDT), Lasse Langwadt Christensen
lang...@fonz.dk> wrote:
tirsdag den 26. juli 2022 kl. 15.59.31 UTC+2 skrev jla...@highlandsniptechnology.com:
On Tue, 26 Jul 2022 08:58:39 -0400, Phil Hobbs
pcdhSpamM...@electrooptical.net> wrote:
jla...@highlandsniptechnology.com wrote:
https://www.dropbox.com/s/wyd29ukhfm27rsj/Binary_CW_Multplier.jpg?raw=1
Fun. Of course with the right parts, you can do 2**N multiplication
with N stages. (Does require using the relays for commutation, of course.)
Cheers
Phil Hobbs
This circuit can do a 2^N step high-voltage supply with N low voltage,
cheap telecom relays. Maybe an incremental linear reg could
interpolate between the steps.
regulate the input?
Sure. The source could be something like an LTC3803 (geat part) and a
standard transformer, one of the DRQ things.
We had one inquiry for a HV supply that was pretty time-agile, which
would need a linear reg.
Frankly, I\'d rather not be in the HV business. Too much to go wrong.
This stepped C-W was just a goofy idea.
This topology uses isolation transformers with dual secondaries:
https://imgur.com/a/XRoYq2V
I _think_ I got the dots right...
I think that untangles into a 360 volt transformer and a half-wave
doubler.
Ya that sounds right. An old trick in the National Semi handbook from
the 70s I think it was, for regulation on the secondary is to wrap an
LM317 inside the grid to cathode voltage of a power triode and that
works OK for regulating up to a couple kV at low currents without too
much thought on how to provide an appropriate reference and error amp
for the potentials on that side.
Long lead times on many N fets with Vds > 1kV, not surprising I guess.
Lately we don\'t run line AC into boxes, or use line frequency
transformers. Too many safety and compliance isues, too much weight
and cost.
Yep. Laptop-style external bricks in 24-ish and 48 volts are pretty
readily available up to 100 watts or so
much more than that, e.g. https://www.digikey.dk/en/products/detail/mean-well-usa-inc/GST280A24-C6P/7703684
Phihomg and MeanWell make warts (big plugs) at 60 watts.
lots of 65W USB-C chargers like this: https://www.pricerunner.dk/product/640x640/3002755304/Baseus-GaN2-Lite-Quick-Charge-Travel-Charger.jpg
Yikes. GaN fets are changing things. I wonder what the switching
frequency is.
What\'s the output voltage? Surely not 5.
P
Phil Hobbs
Guest
jlarkin@highlandsniptechnology.com wrote:
Yeah, we use warts too. Our standard one is an SL Power ME10A2403B01,
which comes with international plug adapters. It\'s overkill for most of
our stuff, except for some of the beefier TE coolers.
Very pretty.
It\'s a drag when those fall out, for sure.
Cheers
Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510
http://electrooptical.net
http://hobbs-eo.com
On Thu, 28 Jul 2022 10:46:12 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:
jlarkin@highlandsniptechnology.com wrote:
On Wed, 27 Jul 2022 23:35:12 -0700 (PDT), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:
torsdag den 28. juli 2022 kl. 02.54.38 UTC+2 skrev bitrex:
On 7/27/2022 5:08 AM, jla...@highlandsniptechnology.com wrote:
On Tue, 26 Jul 2022 21:53:08 -0400, bitrex <us...@example.net> wrote:
On 7/26/2022 10:19 AM, jla...@highlandsniptechnology.com wrote:
On Tue, 26 Jul 2022 07:03:38 -0700 (PDT), Lasse Langwadt Christensen
lang...@fonz.dk> wrote:
tirsdag den 26. juli 2022 kl. 15.59.31 UTC+2 skrev jla...@highlandsniptechnology.com:
On Tue, 26 Jul 2022 08:58:39 -0400, Phil Hobbs
pcdhSpamM...@electrooptical.net> wrote:
jla...@highlandsniptechnology.com wrote:
https://www.dropbox.com/s/wyd29ukhfm27rsj/Binary_CW_Multplier.jpg?raw=1
Fun. Of course with the right parts, you can do 2**N multiplication
with N stages. (Does require using the relays for commutation, of course.)
Cheers
Phil Hobbs
This circuit can do a 2^N step high-voltage supply with N low voltage,
cheap telecom relays. Maybe an incremental linear reg could
interpolate between the steps.
regulate the input?
Sure. The source could be something like an LTC3803 (geat part) and a
standard transformer, one of the DRQ things.
We had one inquiry for a HV supply that was pretty time-agile, which
would need a linear reg.
Frankly, I\'d rather not be in the HV business. Too much to go wrong.
This stepped C-W was just a goofy idea.
This topology uses isolation transformers with dual secondaries:
https://imgur.com/a/XRoYq2V
I _think_ I got the dots right...
I think that untangles into a 360 volt transformer and a half-wave
doubler.
Ya that sounds right. An old trick in the National Semi handbook from
the 70s I think it was, for regulation on the secondary is to wrap an
LM317 inside the grid to cathode voltage of a power triode and that
works OK for regulating up to a couple kV at low currents without too
much thought on how to provide an appropriate reference and error amp
for the potentials on that side.
Long lead times on many N fets with Vds > 1kV, not surprising I guess.
Lately we don\'t run line AC into boxes, or use line frequency
transformers. Too many safety and compliance isues, too much weight
and cost.
Yep. Laptop-style external bricks in 24-ish and 48 volts are pretty
readily available up to 100 watts or so
much more than that, e.g. https://www.digikey.dk/en/products/detail/mean-well-usa-inc/GST280A24-C6P/7703684
Phihomg and MeanWell make warts (big plugs) at 60 watts.
All you need is a power bar with the outlets in the right orientation.
The one over my bench is a very nice 20x Tripplite one, with filtering
and MOVs, but the prongs are oriented horizontally, so that most warts
take up two spaces.
Cheers
Phil Hobbs
We\'re shipping rackmount boxes to a big govt facility. They have a
group in charge of safety and compliance and all that stuff and would
have set us back 6 months and maybe $40K in lab fees if we ran AC into
the box. An external 24 volt 2.5-amp laptop-type supply just fixed the
problem... no complaints from the users.
Yeah, we use warts too. Our standard one is an SL Power ME10A2403B01,
which comes with international plug adapters. It\'s overkill for most of
our stuff, except for some of the beefier TE coolers.
https://www.dropbox.com/s/vjzhoths9v55gpq/Man_Front_1.jpg?raw=1
Very pretty.
It pulls about 2 amps until the giant EOM oven heats up, maybe 15
minutes.
The power connector on the back is the usual barrel, but it\'s threaded
for optional mechanical locking.
It\'s a drag when those fall out, for sure.
Cheers
Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510
http://electrooptical.net
http://hobbs-eo.com