Electronics > Beginners

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

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lordvader88:
I have about a 100W transformer from a stereo. Its the only center tapped trans I have, and I wanted to make some signal generator circuits, including using a XR2206 but is Vmax is +/-13Vdc , this trans. would be about +/-35Vdc rectified

Now I plan make a general linear PSU with some big transistors. But what would I even do with that much voltage? What bench stuff do people make for fun or for equipment that would need so much voltage ?

bitseeker:
General purpose linear bench power supplies are commonly found with 30V/3A or 30V/5A output. It's not unusual for audio power amplifiers to have ±20 – 30V power rails.

It's all relative, of course. Talk to the vacuum tube folks where power rails are 300 – 400V.

GadgetBoy:
I could definitely use that transformer myself. You could use it in a full wave rectified circuit for ~18V. Put a half-wave rectifier on each outer tap of the transformer, using the centre tap as ground. You'll end up with a full wave rectified signal, which you can then filter and smooth.

Sent from my ONEPLUS A3000 using Tapatalk

Cliff Matthews:
Is that 26vct unloaded? I recall 25.2v is a common voltage, somewhere way back. Of course you could always peel a small bit of the outer insulation where the CT wire comes out, and you'll find you can divide that secondary into 2 distinct windings. I've done this many times, soldered it back up and over-sprayed the solid-core wire with auto ignition spray. YMMV

HB9EVI:
I'd use it for an audio amp

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