WILLIAM KITCHEN wrote in a message to ROY J. TELLASON:

 MR>> The TL494 is hard to kill.

 RJT> What is that chip,  anyway?  Something application-specific?

 WK> It's a PWM controller chip. It's an off-the-shelf TI part, though
 WK> not overly  common. Most larger part suppliers will have it.

The part number in the unit I'm looking at here is "DBL494", 
probably the same thing.  A 16-pin part.

Maybe if I can find a data sheet on it somewhere I can make some sense out
of this PS...

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