I will use two diodes in series for voltage doubler, I changed all CCS area: resistors & both DN2540, also I will included all zeners 12V 05.5W that I didn't installed, local shop don't have 500V: could I use two fuses in series 100mA 250V or in parallel?
Use two fuses 100mA in series with 2 cm distance between their holders. So they can interrupt without arc.
http://www.youtube.com/watch?v=MAlyEMQxTN0
http://www.youtube.com/watch?v=MAlyEMQxTN0
I have connected the regulator but the red LED has not lit and neither I have voltage at the output😡
First I will change Q6 2SK117GR to see if LED lits.
First I will change Q6 2SK117GR to see if LED lits.
Changed 2SK117GR still LED don't lit, checked LED with battery and lits, I will change IRF840
Something very wrong is going on there. Something with grounding possibly, and early in the configuration. Make it all grounded or all floating, not half grounded, half floating. That doubler if grounded at totem capacitors mid point and all further caps return there is a +/- source, if at the bottom and all further caps return there is a + polarity source.
Changed IRF840 and LED don't lit (it's very strange) reg. at the input have 365VDC, I will check R11 1K trimmer.
Verified both trimmers: 1K is good works OK, 200R is burned measured with DVM wiper to ground DVM and both sides reads Megs, changed & tested the reg again LED don't lit Vout 0VDC.
Isn't there 310-320VDC available without doubling to test for 300V out? Then change all semis including led. Use fuses everywhere. Start with everything floating, ground at one point only, see when fuses are taken out, debugging steps in other words. When the whole config as it is makes its 300 OHM RC cell part in PSU break like being hit with lightning, don't connect up the reg again and again without fusing or reconfiguring, else only same damages will occur.
Yes I have tx 240VAC I will try, yesterday installed two fuses in series separated 2cm 100mA 250VAC, OK first all floating, gnd at only one point, checking fuses.