This circuit provides a few watts of output and can be used in the car as an auxiliary amplifier. Transistors must be mounted on heatsinks and the speaker can be 4 ohms or 8 ohms.
Frequencies up to 5 MHz can be poroduced by this circuit. The output is a square wave signal. The...
This circuit monitors the activation of a lamp or other load through parallel or two-way switches. The...
This circuit was obtained in an old Elektor and can be adapted to use white power LEDs. The...