This simple wireless microphone circuit for the MW band was found in an old American documentation. The coil is the oscillator of an old MW radio.
This simple expandable circuit was obtained from a Popular Electronics from the 80's. The supply...
This circuit in the National Semiconductor Fast IC Power Transistor manual uses a special power...
This simple injector circuit can actually be powered by voltages from 3 to 9 V. The frequency is...