In the figure we have the way to implement a monostable with an operational amplifier LM393. The configuration applies to other operators and the power supply must be symmetrical.
We found this circuit in an old American documentation. SCRs can be modern equivalent types. The...
We found this circuit in a 1990 documentation. The operational amplifiers are type 741 and the LED is...
This fast-acting circuit uses a 555. We found it in the November 1992 Radio Electronics magazine. The...