Thread: Zx81
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Old 16th Mar 2020, 10:09 am   #87
Join Date: Aug 2011
Location: Newcastle, Tyne and Wear, UK.
Posts: 9,217
Default Re: Zx81

I've seen variants where there is both an additional diode and an additional resistor in series with the diode. Try the simplest version first, then add the other components if it proves necessary.
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