This circuit was found in an Electronic Design from the 90s. The integrated circuit is the LT1016, a high-speed comparator of the time.
This detector uses an unusual sensor today. The circuit is from an 80s documentation. Its...
This circuit was found in the December 1976 issue of Radio Electronics magazine. The circuit...
For inductive loads we have the configuration shown in the figure. Note that the opto-coupler...