This circuit interrupts the power supply when grounding is missing. The circuit is from an old documentation (from the 80's) using current transformers and other components of the time.
This circuit was obtained in a magazine for radio amateurs 73 of the 90s. The circuit is based on...
This input stage has unit gain but a high input impedance and low output impedance. The circuit is...
May 2016 - It can be obtained from Mouser Electronics new display 1092 from VDC. The new LED...