This circuit was obtained from an 80's Radio Electronics. The circuit decodes “scrambled” or sinusoidal encoded signals by providing an audio signal at the output.
This is a configuration much explored by assemblers, being found on this site in dozens of similar...
This circuit can control two loads and is also equipped with a light sensor for its trip. The...
The transistors of this circuit may be the BC548 or BC549 and its power supply can be performed...