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Is this going to be a line operated device? If so, a modified Cockroft-Walton multiplier is likely to be what you require. If you're using a regulating circuit, even a bang-bang regulator, you can safely charge the caps to their full 500 volt operating voltage. You will get up to 10% more...

Wow! OK, guys, thanks for the input. Very valuable suggestions, all of them. The photo-tools last generated for the boards were destroyed, along with what was apparently the last known stand-alone Gerber file set when the board vendor purged his old customer files. I had hoped to avoid...

Dan, Thanks for responding. The computer in question is one of several used by the company in the early 70's. By 1998, all the active engineering documents had been migrated to Windows based applications. I've been here since 2000. This is the first time we have needed any of the older...

I have, on a legacy Macintosh computer, circuit board files and presumably schematic diagrams that I don't know how to recover. The files bear no extensions, so I don't know how they were generated, nor do I know how to translate them into something usable. Is there anyone out there who is...