Found in old documentation, this circuit can generate pulses from 400 to 4000 Hz with active cycle control from 1% to 99%.
This simple 1 transistor circuit was found in an American documentation from the 60's. The...
Found in a magazine 73 for radio amateurs, this circuit makes use of general purpose transistors and...
The presented circuit allows to control the valve of a tap. The positioning of the emitter and the...