Found in Radio Electronics magazine, May 1987. It triggers a xenon lamp from an inductive sensor. The circuit requires 200 to 400 V DC to operate.
This circuit found in a European publication from the 1980s, is based on PLL 566. The frequencies...
This circuit, which can be used safely, has been obtained in a 1987 documentation. It consists of a...
This circuit detects when a powered circuit suffers a malfunction, lighting an LED. The supply...