Suggested by a 90s Popular Electronics this circuit is intended to receive volleys or whistles from thunderstorms in the wave range below 20 kHz. The coil consists of 300 turns of wire 26 in a ferrite rod.
The circuit shown in the figure consists of a phase shift oscillator and its components have been...
This amplified speaker is from a Radio Electronics from September 1988. The power integrated...
Texas Instruments UCC21225A is available from Mouser Electronics. It is an isolated gate driver...