Phase Detector 7400 (CB22427E)

This circuit detects the phase of a signal. As it is a TTL circuit, it must be powered by a voltage of 5 V.

JFET Sample and Hold (CB5955E)
The operational amplifier is old. The circuit is from an 80's documentation but can be designed...
Multiple delay pulse generator (CB8200E)
This configuration, explored in other applications of this section and website, was found in a 90s...
Rain Indicator (CB12392E)
The sensors can be screens having porous tissue between them. When the water moistens them, the...