This circuit is from a 1968 Electronics World. It acts directly on a high voltage alternating current relay. The sensor can be a common LDR.
The TSC102 integrated circuit from ST-Microelectronics consists of a current sensor system that, in...
June 2017 - These new AVX capacitors are suitable for filter applications, considerably reducing...
The figure shows how to increase the output current to about 50 mA of an operational amplifier. The...