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little HV supply

Here's a little high-voltage supply. I only need the HV1 (250V) and HV4 (1200V) outputs. It needs tuning, but I need lunch first. Maybe a less fierce mosfet, maybe a bit of snubbing, maybe I'll take the feedback from HV4. I'd prefer less primary inductance in the transformer, but that Coilcraft thing should work.

This is to power a pulsed driver into a Pockels-cell-like gadget, for an optical application. Sort of a charity job.

Version 4 SHEET 1 2184 704 WIRE 1312 -608 1280 -608 WIRE 1472 -608 1376 -608 WIRE 1536 -608 1472 -608 WIRE 1664 -608 1600 -608 WIRE 1856 -608 1664 -608 WIRE 1904 -608 1856 -608 WIRE 1920 -608 1904 -608 WIRE 1472 -576 1472 -608 WIRE 1664 -576 1664 -608 WIRE 1856 -544 1856 -608 WIRE 1120 -432 1040 -432 WIRE 1280 -432 1280 -608 WIRE 1280 -432 1184 -432 WIRE 1344 -432 1280 -432 WIRE 1472 -432 1472 -512 WIRE 1472 -432 1408 -432 WIRE 1664 -432 1664 -512 WIRE 1664 -432 1472 -432 WIRE 1712 -432 1664 -432 WIRE 1744 -432 1712 -432 WIRE 1856 -416 1856 -464 WIRE 1280 -400 1280 -432 WIRE 1472 -400 1472 -432 WIRE 832 -272 752 -272 WIRE 1040 -272 1040 -432 WIRE 1040 -272 896 -272 WIRE 1104 -272 1040 -272 WIRE 1280 -272 1280 -336 WIRE 1280 -272 1168 -272 WIRE 1472 -272 1472 -336 WIRE 1472 -272 1280 -272 WIRE 1520 -272 1472 -272 WIRE 1552 -272 1520 -272 WIRE 1040 -240 1040 -272 WIRE 1280 -240 1280 -272 WIRE -64 -208 -176 -208 WIRE 144 -208 0 -208 WIRE -176 -112 -176 -208 WIRE -80 -112 -176 -112 WIRE 144 -112 144 -208 WIRE 144 -112 0 -112 WIRE 240 -112 144 -112 WIRE 352 -112 240 -112 WIRE 496 -112 432 -112 WIRE 752 -112 752 -272 WIRE 752 -112 576 -112 WIRE 896 -112 752 -112 WIRE 1040 -112 1040 -176 WIRE 1040 -112 960 -112 WIRE 1184 -112 1040 -112 WIRE 1280 -112 1280 -176 WIRE 1280 -112 1184 -112 WIRE 1360 -112 1280 -112 WIRE 1408 -112 1360 -112 WIRE -176 -48 -176 -112 WIRE 144 -48 144 -112 WIRE 496 -32 496 -112 WIRE 576 -32 576 -112 WIRE 1184 -32 1184 -112 WIRE 1280 -32 1280 -112 WIRE 32 64 -32 64 WIRE 144 64 144 32 WIRE 144 64 96 64 WIRE -176 80 -176 32 WIRE 576 80 576 48 WIRE 1184 96 1184 32 WIRE 1280 96 1280 48 WIRE -32 112 -32 64 WIRE 496 112 496 48 WIRE 1040 112 1040 -112 WIRE 144 144 144 64 WIRE 448 192 272 192 WIRE 1040 240 1040 192 WIRE 1040 240 768 240 WIRE -128 256 -176 256 WIRE 16 256 -48 256 WIRE 496 256 496 208 WIRE 496 256 272 256 WIRE 496 288 496 256 WIRE 1040 304 1040 240 WIRE -176 320 -176 256 WIRE 352 320 272 320 WIRE 496 400 496 368 WIRE -176 432 -176 384 WIRE 144 432 144 368 WIRE 1040 432 1040 384 WIRE 352 448 352 320 WIRE 768 448 768 240 WIRE 768 448 352 448 FLAG 144 432 0 FLAG 496 400 0 FLAG 576 80 0 FLAG 1184 96 0 FLAG 1280 96 0 FLAG -176 432 0 FLAG 1360 -112 HV1 FLAG 1040 432 0 FLAG -32 112 0 FLAG 240 -112 IN FLAG -176 80 0 FLAG 1856 -416 0 FLAG 1520 -272 HV2 FLAG 1712 -432 HV3 FLAG 1904 -608 HV4 SYMBOL PowerProducts\\LTC3803 144 256 R0 SYMATTR InstName U1 SYMBOL ind2 480 -48 R0 WINDOW 0 -32 36 Right 2 WINDOW 3 -30 74 Right 2 SYMATTR InstName L1

SYMATTR Type ind SYMATTR SpiceLine Ipk=3.0 Rser=0.01 Cpar=1pF SYMBOL ind2 592 64 R180 WINDOW 0 -26 76 Right 2 WINDOW 3 -26 44 Right 2 SYMATTR InstName L2 SYMATTR Value 2.7m SYMATTR Type ind SYMATTR SpiceLine Ipk=20 Rser=1m Cpar=2pF SYMBOL nmos 448 112 R0 WINDOW 0 114 48 Left 2 WINDOW 3 75 84 Left 2 SYMATTR InstName Q1 SYMATTR Value Si4848DY SYMBOL res 480 272 R0 WINDOW 0 -66 48 Left 2 WINDOW 3 -81 83 Left 2 SYMATTR InstName R1 SYMATTR Value 50m SYMBOL res 128 -64 R0 WINDOW 0 -50 33 Left 2 WINDOW 3 -52 64 Left 2 SYMATTR InstName R2 SYMATTR Value 1K SYMBOL res 1024 208 M180 WINDOW 0 -97 78 Left 2 WINDOW 3 -126 43 Left 2 SYMATTR InstName R3 SYMATTR Value 6.25Meg SYMBOL res 1024 400 M180 WINDOW 0 -74 64 Left 2 WINDOW 3 -80 31 Left 2 SYMATTR InstName R4 SYMATTR Value 20K SYMBOL cap 1168 -32 R0 WINDOW 0 -61 25 Left 2 WINDOW 3 -64 58 Left 2 SYMATTR InstName C1 SYMATTR Value 22n SYMATTR SpiceLine Rser=10m SYMBOL cap 96 48 R90 WINDOW 0 6 68 VBottom 2 WINDOW 3 29 68 VTop 2 SYMATTR InstName C2

SYMATTR SpiceLine V=25 Irms=0 Rser=0.001 MTBF=0 Lser=0 mfg="TDK" pn="C575OX7RIE106M" type="X7R" ppPkg=1 SYMBOL res -32 240 R90 WINDOW 0 -62 55 VBottom 2 WINDOW 3 -49 59 VTop 2 SYMATTR InstName R5 SYMATTR Value 10k SYMBOL cap -160 384 R180 WINDOW 0 -72 44 Left 2 WINDOW 3 -82 7 Left 2 SYMATTR InstName C3 SYMATTR Value 5n SYMBOL voltage -176 -64 R0 WINDOW 123 -220 84 Left 2 WINDOW 0 57 50 Left 2 WINDOW 3 57 86 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 24 SYMBOL res 1264 -48 R0 WINDOW 0 63 38 Left 2 WINDOW 3 64 71 Left 2 SYMATTR InstName R250 SYMATTR Value 250K SYMATTR SpiceLine pwr=12 SYMBOL ind 336 -96 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName Lleak

SYMBOL res -96 -96 R270 WINDOW 0 -45 38 VTop 2 WINDOW 3 -18 97 VBottom 2 SYMATTR InstName Rmon SYMATTR Value 1 SYMBOL cap 0 -224 R90 WINDOW 0 -19 29 VBottom 2 WINDOW 3 45 28 VTop 2 SYMATTR InstName C4

SYMBOL diode 896 -96 R270 WINDOW 0 -31 30 VTop 2 WINDOW 3 -32 31 VBottom 2 SYMATTR InstName D2 SYMBOL diode 1056 -176 R180 WINDOW 0 -37 -6 Left 2 WINDOW 3 -27 -35 Left 2 SYMATTR InstName D1 SYMBOL cap 832 -256 R270 WINDOW 0 111 33 VTop 2 WINDOW 3 104 34 VBottom 2 SYMATTR InstName C6 SYMATTR Value 22n SYMBOL cap 1296 -176 R180 WINDOW 0 -59 45 Left 2 WINDOW 3 -65 15 Left 2 SYMATTR InstName C7 SYMATTR Value 22n SYMBOL diode 1104 -256 R270 WINDOW 0 -31 30 VTop 2 WINDOW 3 -32 31 VBottom 2 SYMATTR InstName D3 SYMBOL res 1840 -560 R0 WINDOW 0 54 48 Left 2 WINDOW 3 57 81 Left 2 SYMATTR InstName R1200 SYMATTR Value 1Meg SYMBOL diode 1296 -336 R180 WINDOW 0 -37 -6 Left 2 WINDOW 3 -27 -35 Left 2 SYMATTR InstName D4 SYMBOL cap 1488 -336 R180 WINDOW 0 -52 46 Left 2 WINDOW 3 -60 16 Left 2 SYMATTR InstName C5 SYMATTR Value 22n SYMBOL diode 1344 -416 R270 WINDOW 0 -31 30 VTop 2 WINDOW 3 -32 31 VBottom 2 SYMATTR InstName D5 SYMBOL cap 1120 -416 R270 WINDOW 0 77 32 VTop 2 WINDOW 3 71 33 VBottom 2 SYMATTR InstName C8 SYMATTR Value 22n SYMBOL diode 1488 -512 R180 WINDOW 0 -37 -6 Left 2 WINDOW 3 -27 -35 Left 2 SYMATTR InstName D6 SYMBOL cap 1680 -512 R180 WINDOW 0 -52 46 Left 2 WINDOW 3 -60 16 Left 2 SYMATTR InstName C9 SYMATTR Value 22n SYMBOL diode 1536 -592 R270 WINDOW 0 -31 30 VTop 2 WINDOW 3 -32 31 VBottom 2 SYMATTR InstName D7 SYMBOL cap 1312 -592 R270 WINDOW 0 -38 33 VTop 2 WINDOW 3 -43 34 VBottom 2 SYMATTR InstName C10 SYMATTR Value 22n TEXT 528 -136 Bottom 2 !K1 L1 L2 1 TEXT 216 -440 Left 2 !.tran 10ms startup TEXT 440 -192 Left 2 ;Coilcraft HA4060 1:3 TEXT 1080 256 Left 2 ;0.8V TEXT 1080 -312 Left 2 ;MMBD5004 TEXT 120 -512 Left 2 ;HV SUPPLY J LARKIN June 27, 2015 TEXT 840 -312 Left 2 ;500V

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John Larkin         Highland Technology, Inc 
picosecond timing   laser drivers and controllers 

jlarkin att highlandtechnology dott com 
http://www.highlandtechnology.com
Reply to
John Larkin
Loading thread data ...

On Sat, 27 Jun 2015 14:16:20 -0700, John Larkin Gave us:

Quite lame. Nearly all HV applications require a supply made specifically for the load circumstance of the application's requirements of the situation involved.

Lame also because you sport multiple outputs.

Lame to the third, because you tout one of those as being a mere tap off of the other generation.

As "HV supplies" go, it is a fail all the way around.

Reply to
DecadentLinuxUserNumeroUno

Gosh. Couldn't have said that better meself.

Right, nobody designs multiple-output power supplies. Especially switchers.

Can you expand on that please?

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John Larkin         Highland Technology, Inc 
picosecond timing   laser drivers and controllers 

jlarkin att highlandtechnology dott com 
http://www.highlandtechnology.com
Reply to
John Larkin

On Sat, 27 Jun 2015 15:39:38 -0700, John Larkin Gave us:

Gosh (wuss), you're an idiot. But we knew that.

Some idiot probably trying to get you to help him make some kind of shock device without industry approvals.

If so, I hope you both end up getting sued or jailed or both.

Reply to
DecadentLinuxUserNumeroUno

On Sat, 27 Jun 2015 14:16:20 -0700, John Larkin Gave us:

You are a true retard.

Reply to
DecadentLinuxUserNumeroUno

C1 needs to be increase to at least 1uf, otherwise the feed back is getting very choppy and resulting from a bad start up and lots of noise..

I ran it with 1uf and it looks good.

Jamie

Reply to
M Philbrook

Hey, I said it needed tuning. But I can get 22nF 500 volt ceramic caps cheap. The startup is a little ratty, but that doesn't matter. I do need to tune the loop compensation, which is currently just a wild guess.

I don't want to design a HV supply, but I need the two outputs, and the commercial bricks are really expensive. One output is for applying an adjustable initial bias to the optical thing, and the other is for a short HV pulse.

I bet that LT Spice has sold a billion dollars worth of ICs by now. It's so easy to pick an LTC part, import the demo circuit, and tweak. Then just buy the expensive LTC chips.

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John Larkin         Highland Technology, Inc 
picosecond timing   laser drivers and controllers 

jlarkin att highlandtechnology dott com 
http://www.highlandtechnology.com
Reply to
John Larkin

It's like some of the PLC s systems I screw around with. One family charges you all out doors for the programming tools to program their hardware, where as many others offer free programming tools for PLC's that do more than is needed most of the time and the hardware price is even lower, in many cases much lower.

I am sure you can guess which ones have been selling more hardware lately:)

Jamie

Reply to
M Philbrook

Adding the slope compensation resistor (5K from R1 to U1.Sense) really cleans things up.

Tuning a switcher is a PITA. Every run takes several minutes, and there are too many knobs to turn. Almost makes a boy want to do math.

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John Larkin         Highland Technology, Inc 
picosecond timing   laser drivers and controllers 

jlarkin att highlandtechnology dott com 
http://www.highlandtechnology.com
Reply to
John Larkin

Still looks like crap to me, I really didn't see it do much over here, so I put the 1uf back over to C1 and it's just wonderful :)

btw, I ran that on my Dell XPS (8 core / 12g) buzzing a long very good.

I once played with the core level settings and I think I was able to get LTspice to run a single core by it self. I can't say if it really made that much of a difference ?

Jamie

Reply to
M Philbrook

On Sat, 27 Jun 2015 20:54:18 -0400, M Philbrook wrote:

The guys at work are forcing me to get a new PC. Quad core, 8G ram, win7, fast RAID drives, all that modern stuff. It will be interesting to compare Spice run times.

This is a lot nicer than the one I posted before lunch. R6 dissipates a few hundred mW, so it's tempting to leave the snubber out and let it ring.

This runs 15 msec of sim in a hair over 4 minutes on my trusty old HP, with nothing being plotted. Task Manager reports 50% CPU use, with I suppose the rest being disk access.

Version 4 SHEET 1 2184 704 WIRE 1312 -608 1280 -608 WIRE 1472 -608 1376 -608 WIRE 1536 -608 1472 -608 WIRE 1664 -608 1600 -608 WIRE 1856 -608 1664 -608 WIRE 1904 -608 1856 -608 WIRE 1920 -608 1904 -608 WIRE 1472 -576 1472 -608 WIRE 1664 -576 1664 -608 WIRE 1856 -544 1856 -608 WIRE 1120 -432 1040 -432 WIRE 1280 -432 1280 -608 WIRE 1280 -432 1184 -432 WIRE 1344 -432 1280 -432 WIRE 1472 -432 1472 -512 WIRE 1472 -432 1408 -432 WIRE 1664 -432 1664 -512 WIRE 1664 -432 1472 -432 WIRE 1712 -432 1664 -432 WIRE 1744 -432 1712 -432 WIRE 1856 -416 1856 -464 WIRE 1280 -400 1280 -432 WIRE 1472 -400 1472 -432 WIRE 832 -272 752 -272 WIRE 1040 -272 1040 -432 WIRE 1040 -272 896 -272 WIRE 1104 -272 1040 -272 WIRE 1280 -272 1280 -336 WIRE 1280 -272 1168 -272 WIRE 1472 -272 1472 -336 WIRE 1472 -272 1280 -272 WIRE 1520 -272 1472 -272 WIRE 1552 -272 1520 -272 WIRE 1040 -240 1040 -272 WIRE 1280 -240 1280 -272 WIRE -64 -208 -176 -208 WIRE 144 -208 0 -208 WIRE -176 -112 -176 -208 WIRE -80 -112 -176 -112 WIRE 144 -112 144 -208 WIRE 144 -112 0 -112 WIRE 240 -112 144 -112 WIRE 288 -112 240 -112 WIRE 352 -112 288 -112 WIRE 496 -112 432 -112 WIRE 752 -112 752 -272 WIRE 752 -112 576 -112 WIRE 896 -112 752 -112 WIRE 1040 -112 1040 -176 WIRE 1040 -112 960 -112 WIRE 1184 -112 1040 -112 WIRE 1280 -112 1280 -176 WIRE 1280 -112 1184 -112 WIRE 1360 -112 1280 -112 WIRE 1408 -112 1360 -112 WIRE 288 -80 288 -112 WIRE -176 -48 -176 -112 WIRE 144 -48 144 -112 WIRE 496 -32 496 -112 WIRE 576 -32 576 -112 WIRE 1184 -32 1184 -112 WIRE 1280 -32 1280 -112 WIRE 32 64 -32 64 WIRE 144 64 144 32 WIRE 144 64 96 64 WIRE -176 80 -176 32 WIRE 288 80 288 -16 WIRE 336 80 288 80 WIRE 496 80 496 48 WIRE 496 80 416 80 WIRE 576 80 576 48 WIRE 1184 96 1184 32 WIRE 1280 96 1280 48 WIRE -32 112 -32 64 WIRE 496 112 496 80 WIRE 1040 112 1040 -112 WIRE 144 144 144 64 WIRE 448 192 272 192 WIRE 1040 240 1040 192 WIRE 1040 240 768 240 WIRE -128 256 -176 256 WIRE 16 256 -48 256 WIRE 352 256 272 256 WIRE 496 256 496 208 WIRE 496 256 432 256 WIRE 496 288 496 256 WIRE 1040 304 1040 240 WIRE -176 320 -176 256 WIRE 352 320 272 320 WIRE 496 400 496 368 WIRE -176 432 -176 384 WIRE 144 432 144 368 WIRE 1040 432 1040 384 WIRE 352 448 352 320 WIRE 768 448 768 240 WIRE 768 448 352 448 FLAG 144 432 0 FLAG 496 400 0 FLAG 576 80 0 FLAG 1184 96 0 FLAG 1280 96 0 FLAG -176 432 0 FLAG 1360 -112 HV1 FLAG 1040 432 0 FLAG -32 112 0 FLAG 240 -112 IN FLAG -176 80 0 FLAG 1856 -416 0 FLAG 1520 -272 HV2 FLAG 1712 -432 HV3 FLAG 1904 -608 HV4 SYMBOL PowerProducts\\LTC3803 144 256 R0 SYMATTR InstName U1 SYMBOL ind2 480 -48 R0 WINDOW 0 -32 36 Right 2 WINDOW 3 -30 74 Right 2 SYMATTR InstName L1

SYMATTR Type ind SYMATTR SpiceLine Ipk=3.0 Rser=0.01 Cpar=1pF SYMBOL ind2 592 64 R180 WINDOW 0 -26 76 Right 2 WINDOW 3 -26 44 Right 2 SYMATTR InstName L2 SYMATTR Value 2.7m SYMATTR Type ind SYMATTR SpiceLine Ipk=20 Rser=1m Cpar=2pF SYMBOL nmos 448 112 R0 WINDOW 0 114 48 Left 2 WINDOW 3 75 84 Left 2 SYMATTR InstName Q1 SYMATTR Value Si4848DY SYMBOL res 480 272 R0 WINDOW 0 -66 48 Left 2 WINDOW 3 -81 83 Left 2 SYMATTR InstName R1 SYMATTR Value 100m SYMBOL res 128 -64 R0 WINDOW 0 -50 33 Left 2 WINDOW 3 -52 64 Left 2 SYMATTR InstName R2 SYMATTR Value 1K SYMBOL res 1024 208 M180 WINDOW 0 -97 78 Left 2 WINDOW 3 -126 43 Left 2 SYMATTR InstName R3 SYMATTR Value 6.25Meg SYMBOL res 1024 400 M180 WINDOW 0 -74 64 Left 2 WINDOW 3 -80 31 Left 2 SYMATTR InstName R4 SYMATTR Value 20K SYMBOL cap 1168 -32 R0 WINDOW 0 -61 25 Left 2 WINDOW 3 -64 58 Left 2 SYMATTR InstName C1 SYMATTR Value 44n SYMATTR SpiceLine Rser=10m SYMBOL cap 96 48 R90 WINDOW 0 6 68 VBottom 2 WINDOW 3 29 68 VTop 2 SYMATTR InstName C2

SYMATTR SpiceLine V=25 Irms=0 Rser=0.001 MTBF=0 Lser=0 mfg="TDK" pn="C575OX7RIE106M" type="X7R" ppPkg=1 SYMBOL res -32 240 R90 WINDOW 0 -62 55 VBottom 2 WINDOW 3 -49 59 VTop 2 SYMATTR InstName R5 SYMATTR Value 20K SYMBOL cap -160 384 R180 WINDOW 0 -55 43 Left 2 WINDOW 3 -53 8 Left 2 SYMATTR InstName C3 SYMATTR Value 10n SYMBOL voltage -176 -64 R0 WINDOW 123 -220 84 Left 2 WINDOW 0 57 50 Left 2 WINDOW 3 57 86 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 24 SYMBOL res 1264 -48 R0 WINDOW 0 63 38 Left 2 WINDOW 3 64 71 Left 2 SYMATTR InstName R250 SYMATTR Value 250K SYMATTR SpiceLine pwr=12 SYMBOL ind 336 -96 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName Lleak

SYMBOL res -96 -96 R270 WINDOW 0 -45 38 VTop 2 WINDOW 3 -18 97 VBottom 2 SYMATTR InstName Rmon SYMATTR Value 1 SYMBOL cap 0 -224 R90 WINDOW 0 -19 29 VBottom 2 WINDOW 3 45 28 VTop 2 SYMATTR InstName C4

SYMBOL diode 896 -96 R270 WINDOW 0 -31 30 VTop 2 WINDOW 3 -32 31 VBottom 2 SYMATTR InstName D2 SYMBOL diode 1056 -176 R180 WINDOW 0 -37 -6 Left 2 WINDOW 3 -27 -35 Left 2 SYMATTR InstName D1 SYMBOL cap 832 -256 R270 WINDOW 0 111 33 VTop 2 WINDOW 3 104 34 VBottom 2 SYMATTR InstName C6 SYMATTR Value 22n SYMBOL cap 1296 -176 R180 WINDOW 0 -59 45 Left 2 WINDOW 3 -65 15 Left 2 SYMATTR InstName C7 SYMATTR Value 22n SYMBOL diode 1104 -256 R270 WINDOW 0 -31 30 VTop 2 WINDOW 3 -32 31 VBottom 2 SYMATTR InstName D3 SYMBOL res 1840 -560 R0 WINDOW 0 54 48 Left 2 WINDOW 3 57 81 Left 2 SYMATTR InstName R1200 SYMATTR Value 1Meg SYMBOL diode 1296 -336 R180 WINDOW 0 -37 -6 Left 2 WINDOW 3 -27 -35 Left 2 SYMATTR InstName D4 SYMBOL cap 1488 -336 R180 WINDOW 0 -52 46 Left 2 WINDOW 3 -60 16 Left 2 SYMATTR InstName C5 SYMATTR Value 22n SYMBOL diode 1344 -416 R270 WINDOW 0 -31 30 VTop 2 WINDOW 3 -32 31 VBottom 2 SYMATTR InstName D5 SYMBOL cap 1120 -416 R270 WINDOW 0 77 32 VTop 2 WINDOW 3 71 33 VBottom 2 SYMATTR InstName C8 SYMATTR Value 22n SYMBOL diode 1488 -512 R180 WINDOW 0 -37 -6 Left 2 WINDOW 3 -27 -35 Left 2 SYMATTR InstName D6 SYMBOL cap 1680 -512 R180 WINDOW 0 -52 46 Left 2 WINDOW 3 -60 16 Left 2 SYMATTR InstName C9 SYMATTR Value 22n SYMBOL diode 1536 -592 R270 WINDOW 0 -31 30 VTop 2 WINDOW 3 -32 31 VBottom 2 SYMATTR InstName D7 SYMBOL cap 1312 -592 R270 WINDOW 0 -38 33 VTop 2 WINDOW 3 -43 34 VBottom 2 SYMATTR InstName C10 SYMATTR Value 22n SYMBOL cap 272 -80 R0 WINDOW 0 -48 62 Left 2 WINDOW 3 -55 93 Left 2 SYMATTR InstName C11 SYMATTR Value 220p SYMBOL res 432 64 R90 WINDOW 0 69 58 VBottom 2 WINDOW 3 74 59 VTop 2 SYMATTR InstName R6 SYMATTR Value 200 SYMBOL res 448 240 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R7 SYMATTR Value 5K TEXT 528 -136 Bottom 2 !K1 L1 L2 1 TEXT 216 -440 Left 2 !.tran 15ms startup TEXT 440 -192 Left 2 ;Coilcraft HA4060 1:3 TEXT 1080 256 Left 2 ;0.8V TEXT 1080 -312 Left 2 ;MMBD5004 TEXT 120 -512 Left 2 ;HV SUPPLY J LARKIN June 27, 2015 TEXT 840 -312 Left 2 ;500V

--

John Larkin         Highland Technology, Inc 
picosecond timing   laser drivers and controllers 

jlarkin att highlandtechnology dott com 
http://www.highlandtechnology.com
Reply to
John Larkin

Well, you can look forward to a welcome speed up. I also use an SSD for the OS, but don't know just how much difference it makes.

aborting, unknown syntax... and the syntax in question was?...

- show quoted text - :)

It opened once I removed pn, type, ppPkg (LTSpice 4.22f on Wine).

100k load halves V_out, 600v 100k = 6mA. Too high for a simple multiplier straight off the mains :)

NT

Reply to
tabbypurr

How long did it run for?

I probably need about 1 mA or so at 1200 volts (that will require another sim to find out) so that circuit should be OK.

There's another transformer topology I might try, potentially smaller. I'll post it if it works. I need two variable voltages 0-1KV, so I was going to make a 1200 volt supply and use two regulators downstream. If the switcher is small enough, I may as well just make two variable supplies.

A couple of 1KV linear voltage regulators would be a nuisance.

--

John Larkin         Highland Technology, Inc 
picosecond timing   laser drivers and controllers 

jlarkin att highlandtechnology dott com 
http://www.highlandtechnology.com
Reply to
John Larkin

You need to watch for the line wraps when posting here. That line I moved to the end of the prior line where it belongs, you don't remove it.

All spice lines start with a spice directive of some sort and I think they are all CAPS, not sure there, but when you see one out of place it is a good chance it belongs to the end of the prior line and that line could be very long.. Just won't happen when posted using most clients.

Jamie

Reply to
M Philbrook

Blimey, it's high time you got that new PC. FWIW it runs in a minute on a i5-3470 (quad core 3.2GHz) with 6G memory which is a mid level machine.

Reply to
JM

4x improvement sounds nice, but I really want 1000x so I can move sliders and see waveforms change immediately, like turning trimpots and watching a scope trace. Maybe next year.

Spice is the only thing that I do that runs compute bound.

--

John Larkin         Highland Technology, Inc 
picosecond timing   laser drivers and controllers 

jlarkin att highlandtechnology dott com 
http://www.highlandtechnology.com
Reply to
John Larkin

I didn't time it, maybe 30 seconds or so on a dual core 2.2GHz.

IME it was usually lack of RAM that retired computers. 8G is more than necessary now, but won't stay that way.

NT

Reply to
tabbypurr

  • running under wine

NT

Reply to
tabbypurr

I made a HV supply for a Photo tube and required a 800V and 110 volt dC to operate from a standard inductrial 24 volt din rail mount supply.

For that I juse used two inductors in series as two buck switchers. Used a HV npn transistor for the switch from the driving circuit. The two L's in series provided the divided voltage, each node supplying the diodes to charge the caps per stage. I did the regulation from the 110 volt side using a basic zener feed back to a clamp circuit to suppress or reduce the current demand on the L's during the inductor current state or the circuit.

I am not sure why they needed the two voltages like that for the photo tube but I didn't ask questions, I just got the current demands and voltage stability specs thrown at me and the way I went :) P.S. The supply was a little sluggess starting up because I had large filter caps on the output with a couple of small L's to make sure I didn't have much of a ripple that was detectable in the application. Overall parts were low could and I did this via a timer as the main source of signal. I just love those things, so much you can do with them.

Jamie

Reply to
M Philbrook
[about computer upgrade]

So, an analog computer, that does what the circuit does, is the obvious solution. Might as well go all the way, do a breadboard (analog computer plus smoke effects).

Reply to
whit3rd

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