I'm building a 12vdc to 350vdc power supply for a mobile tube application and I'm having some troubles. I can light a pair of 120v 40w lamps in series right off the secondary. With the rectifier diodes installed and no load I get 350vdc regulated output but as soon as I place a load on the output the diodes get hot and it can not light the lamps.
I have 4 1n5399 diodes in there now. Rated at 1000v 1.5a 2us. Are they not fast enough?
The attached schematic is roughly what I'm dealing with. I may have modified some values here and there. I'm using an un-gapped core from a PC PSU which I rewound with 10 turn CT primary and 160 turn CT turn secondary.
I have 4 1n5399 diodes in there now. Rated at 1000v 1.5a 2us. Are they not fast enough?
The attached schematic is roughly what I'm dealing with. I may have modified some values here and there. I'm using an un-gapped core from a PC PSU which I rewound with 10 turn CT primary and 160 turn CT turn secondary.
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