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 found in a 1973’s Japanese magazine. It uses transistors of the time and is...
This circuit generates low-frequency sinusoidal signals. The variable capacitor is dual and the...
The frequency of the blinking of this circuit is given by the capacitor that can have its value...