Published in a PE Hobbyst Handbook of 1991, this sensor uses an integrated circuit that is unusual today. The circuit is based on a high frequency oscillator.
This half-wave control was published in the September 1987 issue of Radio Electronics magazine. The...
This interesting multivibrator was found in an Italian magazine that no longer exists. This is...
ON Semiconductor NTMJS1D5N04C 40V Industrial MOSFET Available from Mouser Electronics, these ON...