can you run the HP 55 on AC adaptor without batteries?

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can you run the HP 55 on AC adaptor without batteries?

03-01-2021, 01:24 AM

Post: #7

teenix Offline

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RE: can you run the HP 55 on AC adaptor without batteries?

(02-28-2021 11:31 PM)Steve Simpkin Wrote: Yes. Running the Classics (HP-35, 45, 55, 70 and 80) on AC power without a battery pack is perfectly safe. The AC power supply on these models has a separate regulated power source for the calculator logic.

All good advice. Bear in mind that the chargers are as old as the calculators and the internal logic supply may be faulty. Just a thought :-)

cheers

Tony

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Messages In This Thread

can you run the HP 55 on AC adaptor without batteries? - dmh - 02-28-2021, 10:41 PM

RE: can you run the HP 55 on AC adaptor without batteries? - Steve Simpkin - 02-28-2021, 11:31 PM

RE: can you run the HP 55 on AC adaptor without batteries? - dmh - 02-28-2021, 11:44 PM

RE: can you run the HP 55 on AC adaptor without batteries? - Steve Simpkin - 02-28-2021, 11:47 PM

RE: can you run the HP 55 on AC adaptor without batteries? - teenix - 03-01-2021 01:24 AM

RE: can you run the HP 55 on AC adaptor without batteries? - Paul Dale - 02-28-2021, 11:42 PM

RE: can you run the HP 55 on AC adaptor without batteries? - teenix - 03-01-2021, 01:18 AM

RE: can you run the HP 55 on AC adaptor without batteries? - Steve Simpkin - 03-01-2021, 01:34 AM

RE: can you run the HP 55 on AC adaptor without batteries? - teenix - 03-01-2021, 02:32 AM

RE: can you run the HP 55 on AC adaptor without batteries? - ThomasF - 03-01-2021, 10:38 AM

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