This circuit indicates when the voltage of a 12 V battery is low. With changes, for example, the zener, the circuit can be used to monitor other voltages.
This circuit was suggested by Signetics in 1980s documentation. The circuit makes use of the...
We found this guitar effects circuit in a 1997 documentation. As the components used are still...
This FM transmitter has a high power thanks to a push-pull amplifier stage at the output. The coil...