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does anyone know where i can get a power supply ac adaptor for an HP-75?

-adam

Adam,

It is the same as for the HP-71 or HP-41 or their printers, etc: HP 82059D battery charger. There are usually many available on eBay for $10-15.

If you have old battery packs, keep them. They can be re-built with new cells. See the articles at the HP Museum.

Tom

There are is an overabundance of that model right now on ebay, with boxes. Some guy must have found a trailer load. Search for hp calculator adapter.

The HP-75C uses an Hp-82041B/C/D adaptor according to this site and the Hp-82041A that is on ebay should not be used. So i guess im looking for an Hp-82041B/C/D.

Adam,

Look on eBay for alexandracarter selling the "HP Calculator 82059D Charger" @ $9.95 plus $4 shipping, or for anyone else selling the HP 82059D. You won't go wrong: it fits the 41, 71, 75, and all sorts of peripherals.

I don't know where this 82041 number came from -- perhaps it was an early number that HP assigned to it. But 82059D is what you want today.

Tom