Found in 90s Radio Electronics, this shield can control high voltage loads in the power grid. Isolation is guaranteed by the use of an optical coupler.
This circuit was found in Philips documentation from 1965. No information was given about the...
This sophisticated decade of benchtop resistors was found in the November 1989 issue of Radio...
This configuration based on a conventional astable multivibrator was found in a 1982 publication. The...