"Roy J. Tellason" wrote to "MIKE ROSS" (31 Oct 02  20:06:38)
 --- on the topic of "BATTERY PACKS"

 RJT> I scrapped out an old linear power supply board that was originally
 RJT> made by IBM,  who you'd think wouldn't tend to skimp on their
 RJT> components.  They had a crowbar circuit on there with an SCR in a
 RJT> TO-220 package that did _not_ use a heatsink.  That's pretty typical
 RJT> from what I've seen.

Those scr's are meant to vaporize the powersupply trace on the circuit
board and self-imolate to a crisp while doing it; a heatsink would be
like adding window dressing. I've got a boxful of switchers with roasted
crowbar scr's. Some boards are a real mess and look like they spent a
long time in a toaster at the darkest setting. From time to time in a
pinch I salvage the occasional Schottky rectifier in that box.

 Mike
 ****

... When in doubt, blame the hardware.

--- Blue Wave/DOS v2.30