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 simple injector circuit can actually be powered by voltages from 3 to 9 V. The frequency is...
This circuit was suggested by Linear Technology in a 1980s documentation but can be implemented with...
This conventional power supply circuit with the LM317 was found in a 1987 publication and its...