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What to do with +/-26VAC center tapped transformer ?

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Dr.Krieger:
You will only need two Diodes to make a full-wave rectification using your center-tapped "26Vac/100W" trafo, that would give you ~35Vdc so a nice 0-30V 0-3A Power supply!
Come to think of it, even a simple LM338 in TO-3 could handle that, well maybe if you removed a couple of turns for a bit lower Vin...

Oh and ofc don't try to get those 3A at a low output voltage, remember high Vout/Vin (or transistor's Vce*Ic) raise dissipation...

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