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Old 19th Oct 2018, 7:33 pm   #2
Cobaltblue
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Location: Exeter, Devon and Poole, Dorset UK.
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Default Re: Retired Texas TI99/4A engineer needs help please.

Hi Sam

A quick google shows the PG1992 to be an ultra fast switching diode.

I suspect you're right the IN4007 is not a great sub

Cheers

Mike T
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