Found in na 1980’s English magazine, this circuit produces a strong modulated tone reproduced on a speaker. The power MOSFET can be of almost any type.
This low frequency doubler requires a 50 mV signal at the input. The circuit is from an old...
September 2017 - This new integrated circuit, which facilitates the design of PWM dimmers, can now be...
I found this simple circuit from an English magazine from 1984. The circuit can be easily...