SSHV2 Vout is jumping like Vin
I have two secundaries 250VAC 0.8A in parallel, only one secundari of 80mA be enough to power both channels 20+20+20 SSHV2 = 60mA?
I have two secundaries 250VAC 0.8A in parallel, only one secundari of 80mA be enough to power both channels 20+20+20 SSHV2 = 60mA?
There is other secondary 48VAC 0.1A!!!
The mains power transformer is Lundahl LL1683 2ond hand & always I was suspicious about the tx when powered the VI
The mains power transformer is Lundahl LL1683 2ond hand & always I was suspicious about the tx when powered the VI
Maybe it has enough voltage gain to be fully driven by a laptop's output. Like an integrated. Its builder may enlighten us.
Hum can be a ground loop? Measure Hz or look with the scope. If its mainly 100Hz its ripple, if its mainly 50Hz its ground loop or magnetic field interference.
If DC is clean of frequency it should be a loop or interference. Microfarad bank seems enough for a preamp. True RMS AC mode or DC+AC mode in your Brymen can show how much ripple you got on the filter bank.
I had it on the chassis from old for passive CLC PSU but its not strictly necessary to be 470uF when there's a regulator or a Mosfet cap mult following.
Has your SSHV2 output been steadier? Clean line on the scope too? (Always set scope's probe X10 when for HV to be safer).
It's increasing voltage very slowly, I see each number how increase each 10mV, once seen change for other more elevated, like a count up.