This is the receiver from the previous alarm system. The circuit is from Radio Electronics, April 1989, and has an LDR as the sensor. Optical devices should be used to improve performance.
This is one of the first circuits published on this component. We found it in the September 1950...
Found in American documentation from the 90s, this circuit uses a high voltage relay and has no...
This circuit generates high voltage pulses, which can reach 30 000 V with the discharge of a...