This circuit was found in the June 1991 issue of Radio Electronics magazine. The circuit uses two Hall effect sensors of the time. It can be assembled using modern equivalents.
June 2017 - These new AVX capacitors are suitable for filter applications, considerably reducing...
This traditional SCR flip-flop configuration is from an American publication from the 1970s. The...
Other operational amplifiers in the series, such as the MC34072, MC34074, MC35071, MC35072,...