This FM micro transmitter was found in an 80s spy book. The circuit can work with equivalent FETs and is powered by a voltage of 0.6 to 6 V. Details of the coil are given next to the diagram.
This circuit, found in a Popular Electronics from 1992, is based on an oscillator and a crystal...
Found in old American documentation, this filter has a 8 dB per octave attenuation. The formulas for...
You can adjust the frequency produced by a ring oscillator with three inverters inserting a...