This circuit was found in American documentation from the 90's. The circuit applies to any operational. The power supply can be between 5 and 15 V depending on the operational.
This circuit was obtained in an English magazine from 1979, but it can be easily assembled with...
Here we show a simple way to use the 4088 or 4018 as a latched switch. The output can drive...
In fact, it is a RF field indicator with an operational amplifier equivalent to the 741. This...