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1) No, that is KiCad having different symbols to support independent 5V feeds... (yes, it is a non-standard, but considering I will have a bunch of different supplies, not ll referenced the same, a useful one)
2) I did not see a part recommendation (let me review back)
3) I was "bestowed" the...
No, the whole purpose of the circuit is that when there is a differential to latch the direction of the differential, and maintain that state when the connections are terminated..
1665016295
Vcc is 5VDC so the HC is fine. Yes, pins should be tied... but none of that has anything to do with what...
Brian, It works Just fine...
1665004330
Voltages on J1 are not at all related to voltages on the rest of the circuit... could be 115VAC relative riding on them... What is known, is that *if* they are momentarily connected to a source there will be a 12VDC *differential* on them of one...
OK, so the following is a schematic that works. BUT the package count is high since I will need up to 16 of these on a single board....
So, is there an alternate circuit that would have similar functionality???
Typo....
Imaging I1 and I2 are external lead...
Connect I1 to the + of a battery and I2 to the - : set the output
Connect I1 to the - of a battery and I2 to the + : reset the output
There are 2 possibilities...
a) I1 & I2 are not connected to anything : no change to output.
b) I1 is connected to +12V relative to I2 (no relation to TTL Gnd or VCC) : Q goes positive.
c) I2 is connected to -12V relative to I2 (no relation to TTF Gnd or VCC) : Q Goes negative...
I could use a...
(a new twist on a common topic)..
2 wire input. Normally NC between them. Will eventually get a momentary + or - 12V differential between them.... need to set that to a Set/Reset flipflop with TTL (or 3.3V) output...
Many possible circuits, but I am going to need a dozen of these (or more) to...
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