This circuit, which appears in other versions on this website, was obtained in old documentation. The load of each PUT depends on its characteristics. The circuit is low frequency.
In the circuit that uses a PIC16F84, the audio present at the input will have its level controlled by...
This circuit was obtained in a June 1987 magazine Hands-On. It is a circuit that indicates on two...
This circuit is from a cookbook to timers. The circuit is triggered by an external signal and,...