There are two circuits posted above...The circuit posted above works but ...
No.What do you think about this? Can it work?
The circuit in post #2.There are two circuits posted above...
Fortunately for us, the circuit posted has positive feedback around two inverters in sreies, an excellent example of a Schmitt trigger from 1961.Using a capacitor to control ramp rate / delay into a non schmidt triggered conditioned CMOS gate input generally a no-no.
True. I have no argument with that.always thought long times spend at Vth asking for problems.
Okay, I see your point, and its low impedance would kill the positive feedback voltage.Because the caps are acting as the source......or so I think
That is solved, as in Wally's circuit, by reducing the lower 100K resistor to something smaller than the other one, like 10% or less (his is 4.7K). It then swamps out the impedance of the R-C timing network, holding the latch in state no matter the voltage of the cap. I updated post #2.The circuit posted above works but when pressing the button a second time to set the output low you have to release the switch within about .2 seconds or the output will return to a high state. Changing the 1uf to 4.7uf will give you a full second to release the button making it more practical if using manually.
Momentary Switch input ... Toggle Function output ... with debounce and initialize in the OFF state ...I found this circuit
View attachment 172063
And this circuit was advertised by the seller as a toggle on-off switch but to be honest I do not see how it can work this way.
What do you think about this? Can it work?
by Duane Benson
by Jake Hertz
by Aaron Carman