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HP-67 low power indicator circuit?
07-30-2023, 09:38 PM (This post was last modified: 07-30-2023 09:51 PM by teenix.)
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RE: HP-67 low power indicator circuit?
It is built into the Cathode Driver chip. I don't think there is much you can do with it.

Tony Duell's circuit here, page 6

cheers

Tony
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RE: HP-67 low power indicator circuit? - teenix - 07-30-2023 09:38 PM



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