Re: Switching Regulator for Audio Amplifier

I see my Chinese amp simply uses a _huge_ torroid, 250W? ...... and normal transistors,
a temp controlled fan, stereo, all in a nice 19 inch rack, with separate volume controls
for left and right, with clipping warning indicator LEDs, with power switch, cinch AND XLR
connectors on the back....

So here are some pictures from the PA3000 inside, the transformer is 220VA.

Discrete is simple :-) and no, it is not MOSFETs, the power transistors seem to be
2SA1943 (PNP) and 2SC5200 (NPN).


And I payed 65 Euro (about 91 dollars) for it..... some years ago, see they are now 87.95 Euro...
with more LEDs :-)
Lookup 'PA3000' at www.conrad.nl
.

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