This circuit of a Popular Electronics is intended to control a wiper. The circuit consists of a relaxation oscillator with unusual component. The relay must be sensitive.
Found in an 80's Hands On Electronics, this circuit turns on a light when it gets dark and goes...
aaa The circuit shown generates 100 kHz signals for calibrating the scale of a receiver in 100 to...
This circuit uses a LM3900 Norton amplifier and a 2.7 V zener diode to supply a current of 1 mA to...