We'll be testing several HV pulse generators and don't have enough
bench supplies, so we'll throw a few of these on an upcoming proto
board.
https://www.dropbox.com/scl/fi/3t650f6z0hzqekg89uha0/X112_JL_HV_2.pdf?rlkey=kvsyij2uy1bnmw176tlu05uf3&raw=1
I can post the Spice if anyone is interested.
We'll be testing several HV pulse generators and don't have enough
bench supplies, so we'll throw a few of these on an upcoming proto
board.
https://www.dropbox.com/scl/fi/3t650f6z0hzqekg89uha0/X112_JL_HV_2.pdf?rlkey=kvsyij2uy1bnmw176tlu05uf3&raw=1
I can post the Spice if anyone is interested.
On 19/07/2025 11:08 am, john larkin wrote:
We'll be testing several HV pulse generators and don't have enough
bench supplies, so we'll throw a few of these on an upcoming proto
board.
https://www.dropbox.com/scl/fi/3t650f6z0hzqekg89uha0/X112_JL_HV_2.pdf?rlkey=kvsyij2uy1bnmw176tlu05uf3&raw=1
I can post the Spice if anyone is interested.
If you could wind your own transformers (or find you local transformer winder and get them to wind some for you) you could build
the much simpler Baxandall inverter
On Sat, 19 Jul 2025 15:56:01 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Bill Sloman" <bill.sloman@ieee.org> wrote in message news:105fff1$2k200$1@dont-email.me...
On 19/07/2025 11:08 am, john larkin wrote:...
We'll be testing several HV pulse generators and don't have enough
bench supplies, so we'll throw a few of these on an upcoming proto
board.
https://www.dropbox.com/scl/fi/3t650f6z0hzqekg89uha0/X112_JL_HV_2.pdf?rlkey=kvsyij2uy1bnmw176tlu05uf3&raw=1
I can post the Spice if anyone is interested.
If you could wind your own transformers (or find you local transformer winder and get them to wind some for you) you could build
the much simpler Baxandall inverter
This should be able to make a KV or two depending on what you follow it with. >>
The simulation starts only if R2 and R3 are slightly different values.
And you can cook your porridge on L3.
On Sat, 19 Jul 2025 16:37:46 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"JM" <sunaecoNoChoppedPork@gmail.com> wrote in message news:fgvn7kp4e9n5ajvi92v4djvt4umrnehqhs@4ax.com...
On Sat, 19 Jul 2025 15:56:01 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Bill Sloman" <bill.sloman@ieee.org> wrote in message news:105fff1$2k200$1@dont-email.me...
On 19/07/2025 11:08 am, john larkin wrote:...
We'll be testing several HV pulse generators and don't have enough >>>>>> bench supplies, so we'll throw a few of these on an upcoming proto >>>>>> board.
https://www.dropbox.com/scl/fi/3t650f6z0hzqekg89uha0/X112_JL_HV_2.pdf?rlkey=kvsyij2uy1bnmw176tlu05uf3&raw=1
I can post the Spice if anyone is interested.
If you could wind your own transformers (or find you local transformer winder and get them to wind some for you) you could
build
the much simpler Baxandall inverter
This should be able to make a KV or two depending on what you follow it with.
The simulation starts only if R2 and R3 are slightly different values.
And you can cook your porridge on L3.
LOL I was hoping to see what Bill might say.
Are there any capacitors which could handle being C1?
A low loss polypropylene would be a candidate.
"Bill Sloman" <bill.sloman@ieee.org> wrote in message news:105fff1$2k200$1@dont-email.me...
On 19/07/2025 11:08 am, john larkin wrote:...
We'll be testing several HV pulse generators and don't have enough
bench supplies, so we'll throw a few of these on an upcoming proto
board.
https://www.dropbox.com/scl/fi/3t650f6z0hzqekg89uha0/X112_JL_HV_2.pdf?rlkey=kvsyij2uy1bnmw176tlu05uf3&raw=1
I can post the Spice if anyone is interested.
If you could wind your own transformers (or find you local transformer winder and get them to wind some for you) you could build
the much simpler Baxandall inverter
This should be able to make a KV or two depending on what you follow it with.
The simulation starts only if R2 and R3 are slightly different values.
Version 4.1
SHEET 1 880 696
WIRE 288 -176 288 -224
WIRE 288 -176 208 -176
WIRE 368 -176 368 -224
WIRE 512 -176 368 -176
WIRE 592 -176 512 -176
WIRE 208 -144 208 -176
WIRE 288 -128 288 -176
WIRE 368 -128 368 -176
WIRE 224 -16 160 -16
WIRE 336 -16 304 -16
WIRE 368 -16 336 -16
WIRE 512 -16 448 -16
WIRE -16 48 -128 48
WIRE 336 48 336 -16
WIRE 336 48 64 48
WIRE -128 96 -128 48
WIRE 160 112 160 -16
WIRE 304 112 160 112
WIRE 512 112 512 -16
WIRE 512 112 368 112
WIRE 160 192 160 112
WIRE 192 192 160 192
WIRE 272 192 256 192
WIRE 416 192 400 192
WIRE 512 192 512 112
WIRE 512 192 480 192
WIRE -128 224 -128 176
WIRE 160 240 160 192
WIRE 512 240 512 192
WIRE 272 320 400 192
WIRE 272 320 208 320
WIRE 400 320 272 192
WIRE 464 320 400 320
WIRE 272 368 272 320
WIRE 400 368 400 320
WIRE 160 384 160 336
WIRE 512 384 512 336
WIRE 272 496 272 448
WIRE 272 496 192 496
WIRE 400 496 400 448
WIRE 400 496 272 496
WIRE 192 528 192 496
WIRE 192 656 192 608
FLAG 160 384 0
FLAG 512 384 0
FLAG 208 -144 0
FLAG 512 -176 do-not-touch
FLAG 192 656 0
FLAG -128 224 0
SYMBOL nmos 208 240 M0
WINDOW 3 61 71 Left 2
SYMATTR Value IPA126N10N3
SYMATTR InstName M1
SYMBOL nmos 464 240 R0
WINDOW 3 64 73 Left 2
SYMATTR Value IPA126N10N3
SYMATTR InstName M2
SYMBOL ind 208 0 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 7000nH
SYMATTR Type ind
SYMBOL ind 352 0 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L2
SYMATTR Value 7000nH
SYMATTR Type ind
SYMBOL ind 384 -144 R90
WINDOW 0 4 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName L3
SYMATTR Value 40mH
SYMATTR Type ind
SYMATTR SpiceLine Rser=1000
SYMBOL res 384 -240 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL cap 368 96 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 100n
SYMBOL diode 256 176 R90
WINDOW 0 61 32 VBottom 2
WINDOW 3 -34 26 VTop 2
SYMATTR InstName D1
SYMATTR Value UPSC600
SYMBOL diode 416 176 M90
WINDOW 0 60 34 VBottom 2
WINDOW 3 -32 30 VTop 2
SYMATTR InstName D2
SYMATTR Value UPSC600
SYMBOL res 256 352 R0
SYMATTR InstName R2
SYMATTR Value 68
SYMBOL res 384 352 R0
SYMATTR InstName R3
SYMATTR Value 67
SYMBOL voltage 192 512 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL voltage -128 80 R0
SYMATTR InstName V2
SYMATTR Value 24
SYMBOL ind -32 64 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L4
SYMATTR Value 56000nH
TEXT -104 464 Left 2 !.tran 0.01 startup
TEXT 400 -104 Left 2 !K1 L1 L2 L3 0.97
TEXT -304 -168 Left 2 ;Quick HV generator by ER 19 July 2025
On Sat, 19 Jul 2025 15:56:01 -0400, "Edward Rawde"..
<invalid@invalid.invalid> wrote:
"Bill Sloman" <bill.sloman@ieee.org> wrote in message news:105fff1$2k200$1@dont-email.me...
On 19/07/2025 11:08 am, john larkin wrote:...
We'll be testing several HV pulse generators and don't have enough
bench supplies, so we'll throw a few of these on an upcoming proto
board.
https://www.dropbox.com/scl/fi/3t650f6z0hzqekg89uha0/X112_JL_HV_2.pdf?rlkey=kvsyij2uy1bnmw176tlu05uf3&raw=1
I can post the Spice if anyone is interested.
If you could wind your own transformers (or find you local transformer winder and get them to wind some for you) you could build
the much simpler Baxandall inverter
This should be able to make a KV or two depending on what you follow it with. >>
The simulation starts only if R2 and R3 are slightly different values.
Fun, but not very practical.
Assuming you rectify the output sine wave, you only get about 600
volts. How do you adjust the output voltage?
Where do you get the transformer and C1?
On Sat, 19 Jul 2025 15:56:01 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Bill Sloman" <bill.sloman@ieee.org> wrote in message news:105fff1$2k200$1@dont-email.me...
On 19/07/2025 11:08 am, john larkin wrote:...
We'll be testing several HV pulse generators and don't have enough
bench supplies, so we'll throw a few of these on an upcoming proto
board.
https://www.dropbox.com/scl/fi/3t650f6z0hzqekg89uha0/X112_JL_HV_2.pdf?rlkey=kvsyij2uy1bnmw176tlu05uf3&raw=1
I can post the Spice if anyone is interested.
If you could wind your own transformers (or find you local transformer winder and get them to wind some for you) you could build
the much simpler Baxandall inverter
This should be able to make a KV or two depending on what you follow it with. >>
The simulation starts only if R2 and R3 are slightly different values.
Fun, but not very practical.
Assuming you rectify the output sine wave, you only get about 600
volts. How do you adjust the output voltage?
"john larkin" <jl@glen--canyon.com> wrote in message news:2b7o7kdf31o0tcps93m7rmi3drehk2sefj@4ax.com...
On Sat, 19 Jul 2025 15:56:01 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Bill Sloman" <bill.sloman@ieee.org> wrote in message news:105fff1$2k200$1@dont-email.me...
On 19/07/2025 11:08 am, john larkin wrote:
Assuming you rectify the output sine wave, you only get about 600
volts. How do you adjust the output voltage?
I can do a nice clean simulated 1.3 KV DC if you only need 75W.
If you want it stabilized I'd suggest adding a shunt regulator.
"john larkin" <jl@glen--canyon.com> wrote in message news:2b7o7kdf31o0tcps93m7rmi3drehk2sefj@4ax.com...
On Sat, 19 Jul 2025 15:56:01 -0400, "Edward Rawde"..
<invalid@invalid.invalid> wrote:
"Bill Sloman" <bill.sloman@ieee.org> wrote in message news:105fff1$2k200$1@dont-email.me...
On 19/07/2025 11:08 am, john larkin wrote:...
We'll be testing several HV pulse generators and don't have enough
bench supplies, so we'll throw a few of these on an upcoming proto
board.
https://www.dropbox.com/scl/fi/3t650f6z0hzqekg89uha0/X112_JL_HV_2.pdf?rlkey=kvsyij2uy1bnmw176tlu05uf3&raw=1
I can post the Spice if anyone is interested.
If you could wind your own transformers (or find you local transformer winder and get them to wind some for you) you could build
the much simpler Baxandall inverter
This should be able to make a KV or two depending on what you follow it with.
The simulation starts only if R2 and R3 are slightly different values.
Fun, but not very practical.
Assuming you rectify the output sine wave, you only get about 600
volts. How do you adjust the output voltage?
With this circuit you likely have to adjust the input voltage.
Where do you get the transformer and C1?
Very good question. A custom designed transformer is likely required.
"john larkin" <jl@glen--canyon.com> wrote in message news:2b7o7kdf31o0tcps93m7rmi3drehk2sefj@4ax.com...
On Sat, 19 Jul 2025 15:56:01 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Bill Sloman" <bill.sloman@ieee.org> wrote in message news:105fff1$2k200$1@dont-email.me...
On 19/07/2025 11:08 am, john larkin wrote:...
We'll be testing several HV pulse generators and don't have enough
bench supplies, so we'll throw a few of these on an upcoming proto
board.
https://www.dropbox.com/scl/fi/3t650f6z0hzqekg89uha0/X112_JL_HV_2.pdf?rlkey=kvsyij2uy1bnmw176tlu05uf3&raw=1
I can post the Spice if anyone is interested.
If you could wind your own transformers (or find you local transformer winder and get them to wind some for you) you could build
the much simpler Baxandall inverter
This should be able to make a KV or two depending on what you follow it with.
The simulation starts only if R2 and R3 are slightly different values.
Fun, but not very practical.
Assuming you rectify the output sine wave, you only get about 600
volts. How do you adjust the output voltage?
I can do a nice clean simulated 1.3 KV DC if you only need 75W.
If you want it stabilized I'd suggest adding a shunt regulator.
john larkin <jl@glen--canyon.com> wrote:
We'll be testing several HV pulse generators and don't have enough
bench supplies, so we'll throw a few of these on an upcoming proto
board.
https://www.dropbox.com/scl/fi/3t650f6z0hzqekg89uha0/X112_JL_HV_2.pdf?rlkey=kvsyij2uy1bnmw176tlu05uf3&raw=1
I can post the Spice if anyone is interested.
We make high voltage APD supplies more or less that way, starting with a
24V supply— half-bridge driving 1/3 of a trifilar transformer, PA2004 I >think, with a C-W at the output. Gets up to about 500V unregulated, ready >for a cap multiplier and Class AB output stage.
Cheers
Phil Hobbs
On Sat, 19 Jul 2025 15:58:54 -0000 (UTC), Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> wrote:
john larkin <jl@glen--canyon.com> wrote:
We'll be testing several HV pulse generators and don't have enough
bench supplies, so we'll throw a few of these on an upcoming proto
board.
https://www.dropbox.com/scl/fi/3t650f6z0hzqekg89uha0/X112_JL_HV_2.pdf?rlkey=kvsyij2uy1bnmw176tlu05uf3&raw=1
I can post the Spice if anyone is interested.
We make high voltage APD supplies more or less that way, starting with a
24V supply— half-bridge driving 1/3 of a trifilar transformer, PA2004 I
think, with a C-W at the output. Gets up to about 500V unregulated, ready >> for a cap multiplier and Class AB output stage.
Cheers
Phil Hobbs
I was thinking of making a bipolar HV supply starting with 2KV maybe,
and using a full bridge of high voltage phototransistors as the
regulators.
One can run a dual C-W string, positive and negative, from one AC
source. A lot of C-W stages makes the magnetics much easier.
Cameras don't have xenon flashes much any more, but people still sell "capacitor-charging" transformers.
Lawrence Livermore considers 9 joules as the threshold of lethality. A
little C-W multiplier is probably millijoules.
On Sat, 19 Jul 2025 15:58:54 -0000 (UTC), Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> wrote:
john larkin <jl@glen--canyon.com> wrote:
We'll be testing several HV pulse generators and don't have enough
bench supplies, so we'll throw a few of these on an upcoming proto
board.
https://www.dropbox.com/scl/fi/3t650f6z0hzqekg89uha0/X112_JL_HV_2.pdf?rlkey=kvsyij2uy1bnmw176tlu05uf3&raw=1
I can post the Spice if anyone is interested.
We make high voltage APD supplies more or less that way, starting with a
24V supply— half-bridge driving 1/3 of a trifilar transformer, PA2004 I
think, with a C-W at the output. Gets up to about 500V unregulated, ready >> for a cap multiplier and Class AB output stage.
Cheers
Phil Hobbs
I was thinking of making a bipolar HV supply starting with 2KV maybe,
and using a full bridge of high voltage phototransistors as the
regulators.
One can run a dual C-W string, positive and negative, from one AC
source. A lot of C-W stages makes the magnetics much easier.
Cameras don't have xenon flashes much any more, but people still sell "capacitor-charging" transformers.
Lawrence Livermore considers 9 joules as the threshold of lethality. A
little C-W multiplier is probably millijoules.
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