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Buzby123 · 27th Mar 2021, 4:27 pm

Micky is not having anymore experiments done on him, he has earned a decent retirement.

Vicky however is going to take his place, and the power reduction mod looks like it's the first to be tried.

Below is the /OE signal on the 571s while scanning keyboard and display. As you can see, it spends the vast majority of it's time in the dis-enabled state. The /OE pulses are 500nS wide, and the gaps are mostly 3uS to 15uS, so a power reduction of 90% is likely.

I'll try this mod next week, in a new thread.

Cheers,

Buzby

27th Mar 2021, 4:27 pm	#267
Buzby123 Heptode Join Date: Oct 2011 Location: Culcheth, Cheshire, UK. Posts: 654	Re: I found it! A very sorry looking MK14. Micky is not having anymore experiments done on him, he has earned a decent retirement. Vicky however is going to take his place, and the power reduction mod looks like it's the first to be tried. Below is the /OE signal on the 571s while scanning keyboard and display. As you can see, it spends the vast majority of it's time in the dis-enabled state. The /OE pulses are 500nS wide, and the gaps are mostly 3uS to 15uS, so a power reduction of 90% is likely. I'll try this mod next week, in a new thread. Cheers, Buzby Attached Thumbnails Last edited by Buzby123; 27th Mar 2021 at 4:37 pm.