Found in an American publication from the 90s, this circuit allows the supply of 3, 6 and 9 V devices with currents up to 1.5 A in the car.
This circuit can function either as a crystal or galena receiver with a pre-amplifier using a FET...
This ultrasonic insect repellent was found in American documentation from the 1980s. The...
The purpose of this circuit found in a 1994 documentation is to drive a 24 V motor. The circuit...