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Simplistic Mosfet HV Shunt Regs
Simplistic Mosfet HV Shunt Regs
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Old 29th December 2011, 04:00 PM   #2251
merlin el mago is offline merlin el mago
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You mean you like it in black too I guess.
Yes, sorry I don't read this post till today
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Old 29th December 2011, 04:18 PM   #2252
merlin el mago is offline merlin el mago
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Hey Nick, see this pic.
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Old 29th December 2011, 04:22 PM   #2253
merlin el mago is offline merlin el mago
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Vin 284V
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Old 29th December 2011, 04:24 PM   #2254
Salas is offline Salas  Greece
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Simplistic Mosfet HV Shunt Regs
Don't know about SSHV2 GB, when we will get more feedback on the protos I guess.
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Old 29th December 2011, 04:25 PM   #2255
merlin el mago is offline merlin el mago
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LED's all also burned
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Old 29th December 2011, 04:41 PM   #2256
merlin el mago is offline merlin el mago
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It's very strange that two different SSHV pcbs with the same issue:

47R burned
220R burned gate resistor IRF8610

I suspected of the PSU, but I tested and is stable Vin 284VDC, any idea?
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Old 29th December 2011, 04:51 PM   #2257
vgeorge is offline vgeorge  Greece
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Simplistic Mosfet HV Shunt Regs
One more picture of the SSHV2 on the scope.
AC max gain 5mV division.
Phillipe, did you test the regulators with dummy load, say 15K first or you put them on the circuit?
Also it' s good after a fault like yours to remove and test all the semiconductors. You never know what can get burned.
When you say PSU, what do you have? Have you simulated it on PSD2?
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Old 29th December 2011, 04:55 PM   #2258
Salas is offline Salas  Greece
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Simplistic Mosfet HV Shunt Regs
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Originally Posted by vgeorge View Post
One more picture of the SSHV2 on the scope.
AC max gain 5mV division.
PSD2?
Excellent stability in your P2P builds. Especially when the trace is taken live on your number 26 feeding through its output transformer. Congratulations.
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Old 29th December 2011, 04:57 PM   #2259
Salas is offline Salas  Greece
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Simplistic Mosfet HV Shunt Regs
Quote:
Originally Posted by merlin el mago View Post
It's very strange that two different SSHV pcbs with the same issue:

47R burned
220R burned gate resistor IRF8610

I suspected of the PSU, but I tested and is stable Vin 284VDC, any idea?
Merlin see what's wrong feeding, grounding, or loading the regs. Something's fishy when two different ones give smoke.
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Old 29th December 2011, 05:03 PM   #2260
merlin el mago is offline merlin el mago
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Quote:
Originally Posted by vgeorge View Post
One more picture of the SSHV2 on the scope.
AC max gain 5mV division.
Phillipe, did you test the regulators with dummy load, say 15K first or you put them on the circuit?
Also it' s good after a fault like yours to remove and test all the semiconductors. You never know what can get burned.
When you say PSU, what do you have? Have you simulated it on PSD2?
I have CLC, tx is Bartolucci 200VDC choke is Bartolucci 10H 100mA, all caps are lytics C1 660uF 450V & C2 300uF 350V
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