I’ve just got my first regular ZZ, and was reasonably happy with how it went.
Seeing as I had 2 NPN FETs left over from my Bit, I began searching this and other forums for the dumbass guide to ZZ FET Modding.
Couldn’t find it, most diagrams and links are gone, so I had to nut the damn thing out myself :huh:
Even went back to semiconductor basics :sleepy:
I can now say I understand the H Bridge reasonably well, as I probably did ages ago when I did the Bit.
I only intended to FET the forward path. I managed to snap a pin off one FET, so I just replaced it with an NPN tranny… :thumbs_down:
So what I have now is a “Quarter FET Mod” 😮
It still works, is a little faster, and will do for now…. whatever
Here’s my schematic, if you wanna have FET reverse then you need to replace the other 2 transistors Q5 and Q7, remove resistors R15 and 16, and jumper the Q5 & 7 bases.
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