This flasher or light pulsator can be used in an ordinary flashlight. The circuit can be adapted to use a lamp instead of an LED. Transistors support equivalents. C1 determines the frequency range.
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,...