Needham EMP-20 Power supply?

As I recall its 12 VAC. But I may be wrong... I do have EMP-20 on my desk in the office and I do use it. So if you didn't find the information anywhere else, please send me an email and I'll reply you Monday morning when I'm at my desk.

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mine says 12VAC 25VA. There's a product design flaw. There's a sticker on the supply that says "fused secondary, do not short." And they mean it. If you are not careful the connector locking clamp can short the outer shell of the power connector and blow the fuse. I bent the clamp so it couldn't short. You have to bust the supply apart to fix the fuse. If you use an unfused supply, you'll want to be sure you can't short it with the locking clamp. mike

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Thanks! 12vac it is.

Got it working now.

Thanks again...

/Joe

Hi Joe,

I've just dug out the manual for mine and they helpfully don't say!

I seem to remember it was 12- 16V AC or DC. I've always used mine with the

12V unregulated (really 14 - 15V) DC wall wart that came with a small portable TV.

Whew, that deosn't seem likely. I assumed it used AC to get a wide range of + and - voltages to support different chips/programming algorithms, some in excess of 12V. Don't some old EPROMs need 21V?

Perhaps your DC supply covers most modern chips, or perhaps I'm totally wronng....