Any chips that will take a +/- 50 V power supply?

[d to the g]

I've got a burnt out old PSE amplifier with two very stout transformers and decent heatsinking (but not PASS sufficient) that I would like to bring back into the fold.

Only issue is the transformers are 1 primary, 1 secondary each, and rectified are putting out 50V. I know this is way too much for the usual LM suspects, but would think that someone out in chip land would know something I don't. (that last part isn't really that hard)

[sangram]

Some of the older TO-3 style LM amps should be able to do it, but those had unusual distortion specs IIRC.

The LME49830 with a few output transistors will get you there. Schematics and kits easily available from the forum. they are not very difficult to build, but slightly more involved than slapping a chip in.

Some of the STK series also do it, but those are obsolete chips. I forgot which ones are rated to 55 and 70 volts or so, but there were some.

[star882]

http://www.coldamp.com/opencms/openc...078/index.html
Only it's a module, not a chip.

[Minion]

The TDA7293 can handle +/-50v dc and the datasheet has a single sided PCB design you can etch...

http://www.datasheetcatalog.org/data...08fj3sqq3y.pdf


Cheers

[d to the g]

Thanks for the suggestions... I was just hoping that I could do this on the cheap with some recycled parts. Maybe if I run across some of the T-03 packaged chips I could wire it up.

[d to the g]

Originally posted by Minion
The TDA7293 can handle +/-50v dc and the datasheet has a single sided PCB design you can etch...

http://www.datasheetcatalog.org/data...08fj3sqq3y.pdf


Cheers

I didn't see your post until now. That looks like a doable chip. Seems I can also skip the etching and just by a board from a couple of different ebay sellers. 100 W is probably 80 W more than I need, but I'm sure I can put it to use somewhere.