"Roy J. Tellason" bravely wrote to "MIKE ROSS" (26 Oct
03  04:06:05)
 --- on the heady topic of "power supply"

 RJT> MIKE ROSS wrote in a message to Roy J. Tellason:

 MR> The TL494 is hard to kill.

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

It is a fixed frequency switchmode PWM controller with an error amp, a
pretty stable 5 volt reference, and a pair of uncommited transistor
drivers, plus many other features. It is a "VERY" common PSU circuit.
Another popular controller is the TDA4601 and is often seen in single
ended flyback display psu's.

 Mike
 ****

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