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.
The circuit is from the Linear applications Handbook of the National Semiconductor of 1994. The...
An article in Radio Electronics magazine from November 1962 taught how to connect two common...
The figure shows how to convert a rectangular signal into a triangular signal using an integrator. The...