throbscottle
Well-Known Member
I've designed this little circuit to indicate whether V1 or V2 comes up first. In simulation at least it works tolerably well. It's to indicate if the vpp/vdd priority switch has functioned correctly on the pic programmer I've nearly finished. Whichever transistor switches on first locks out the other one.
Ideally it would have gain and not be powered by the sources it is giving an indication of! But I can't see a way to do that with only 2 transistors.
Just thought I'd share it anyway.
Ideally it would have gain and not be powered by the sources it is giving an indication of! But I can't see a way to do that with only 2 transistors.
Just thought I'd share it anyway.