[41] Odd display problem
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04-28-2015, 10:16 PM
Post: #11
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RE: [hp41] Odd display problem
(04-28-2015 07:55 PM)emece67 Wrote: I've found that applying a 7 kHz, 0-6 V square wave to the OS1 pin of the display board solves the problem, even the 10 minutes timeout works as expected. Excellent news. I would say that an rc oscillator around a cmos NAND gate should do the trick. Jose Mesquita RadioMuseum.org member |
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