Some says tube rectification will cause the input voltage variation to *any* regulator may result in it dropping out of regulation. That's why SS rectification is more preferable.
I am not Salas, but I can assure that all Salas shunt regs are working perfectly with tube rectifiers.
This has nothing to do with solid state or tube... a tube rectifier drops a certain voltage , so do take that into account.
Get PSUD2 (free) and start fiddling.. just choose your Vin at least 20V higher than your Vout and you won't have a problem...
Regulating to 400V might be borderline and has been answered numerous times, but I'll leave that one to the Master.
Was able to back down the drop across test point, but with inly 16V out of prefilter, i am dropping almost 12V across 220r resistor on prefilter. 500mV across R1, 3.5 across r2 of sshv2 is yielding 160 mV across r5. Diode ,easuremnets reflect gate voltages.
When i first fired it up, i fried r1 along with 220 on prefilter. Did i fry the q1 in the process?
When i first fired it up, i fried r1 along with 220 on prefilter. Did i fry the q1 in the process?
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Yup. For the gate resistor to q1 to fry, i cant imagine q1 not being toast. Changed out resistors and zeners just in case. Will do q1 tomorrow. Considering that at such low voltage the fets are passing do much current, it is the only posibility i can think of. Hey, wheres that gun?
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