HP97 The journey begins
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04-30-2024, 06:56 AM
Post: #806
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RE: HP97 The journey begins
I opened up the Woodstock AC power supply and gave it a 5VDC output using a simple circuit consisting of a full bridge rectifier, 7805 regulator and a couple of caps. This allows the original charger to plug directly into the calculator to power the new Woodstock CPU board and charge the battery.
It's a bit bulky, so I'll see if I can miniaturize it to fit comfortably into the charger case. cheers Tony |
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