This circuit can function as both a light alarm and a shadow alarm. The components are common. The circuit includes the power supply. Output transistors must be mounted on heatsinks.
This DC / DC converter was found in an American 1980s documentation. It provides a negative...
Found in a 80s American documentation, this circuit pulses a lamp for optical relay tests. The...
This circuit has very high input impedance and a differential input. The gain is 1,000 and the...