bluefoxicy Posted June 13, 2008 Share Posted June 13, 2008 The Valve Junior power supply is wrong :/ Or my power is stupid. I measured from C6+ to ground 340V; B1 (C9+) as 299V; B2 (C7+) as 278; and B3 (C8+) as 256. My C6+ to ground should read 366.60V though, and I read 333 directly off the diodes (ripple will do that though). Thoughts? Link to comment Share on other sites More sharing options...
cGil Posted June 13, 2008 Share Posted June 13, 2008 333V on B+? Wow! That's actually pretty cool if your heaters aren't too low as well! What's the wall voltage you're feeding it. Is your area prone to long brownouts? Gil... Link to comment Share on other sites More sharing options...
bluefoxicy Posted June 13, 2008 Author Share Posted June 13, 2008 I know, it's like, I'm using a center tap tranny that does 260-0-260 with 260-0 through a full wave bridge, so getting 260V * 1.41... oh crap, did I build the PSU wrong? I think I need to use 2 diodes for full wave with that, not 4 :-; Link to comment Share on other sites More sharing options...
bluefoxicy Posted June 16, 2008 Author Share Posted June 16, 2008 I fixed the design but it had no impact; I think I found *a* significant way to do full wave 260V off 260-0-260, not *the* way. Also I was using a 68k resistor where it called for 220R, now I have 1K there as I don't have a 5W 220R on hand (which I'll go get this week). Link to comment Share on other sites More sharing options...
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