| ShiFtY |
I am looking at adding some regulation to a power supply I am designing. Basically, I have a 425-0-425 tranny, and need 460 ~ 480VDC @ 200 - 220mA or so. The supply is for a stereo PP 807 output stage.
Unfortunately this rules out most tube rectifiers, I was going to use an 83 I have but it seems that a bit of the filament coating has flaked off (only glows blue in some places) :bawling: What a pity!
So it looks like solid state diodes will be used, possibly with a big old damper diode in series with the supply for a slow warm up. I have space for exactly ONE tube on the amp.
I have a 1.2H @ 450mA choke (15ohm) to use. The power tranny primary is also tapped, So I could boost the output by a little, maybe 10% without over-volting the filaments. (see PSUDE below)
I was looking at this schematic here : http://w3.one.net/~robgrow/circuits...supply/rps.html Obviously it would need a bit of beefing up, any recommendations?
I have done a little modelling in PSUD but the voltage is all over the place with a pi filter and a slightly varying load, esp with 5u4GB which is my other option.
Are there any better ways of going about this? Just brainstorming! Need ideas :D
Thanks in advance |
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| Sch3mat1c |
Your PS is exactly what I would build, given the materials. What, exactly, is wrong with it?
Tim |
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