throbscottle
Well-Known Member
I just pulled the mains transformer from an amp that I found. It has something like 40-0-40 + 0-15 windings. Amp says on the back is 120W so assuming the transformer is maybe 150VA.
So I now have something to base a linear bench PSU on, maybe +/-0-35V range. Thinking about putting in a couple of (pairs of) buck converters so I can create staged voltages internally, so the pass element doesn't have to take so much punishment at low outputs. So assuming I can safely draw 3A, create stages at around +/- 25v and +/-10v, maybe give them some adjustment span of their own. So linear pass element never has more than 45W to dissipate
I know I've visited this idea before, but coming back with some actual hardware now![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Thoughts, anyone?
So I now have something to base a linear bench PSU on, maybe +/-0-35V range. Thinking about putting in a couple of (pairs of) buck converters so I can create staged voltages internally, so the pass element doesn't have to take so much punishment at low outputs. So assuming I can safely draw 3A, create stages at around +/- 25v and +/-10v, maybe give them some adjustment span of their own. So linear pass element never has more than 45W to dissipate
I know I've visited this idea before, but coming back with some actual hardware now
Thoughts, anyone?