This circuit was obtained from ancient American documentation based on the application of neon lamps. The SCR is according to the controlled load. It really is a power control.
This circuit provides a signal of higher frequency the greater the intensity of the light incident on...
This circuit was obtained from a 1978 Practical Wireless. It generates a low frequency, low...
This circuit can be used as a lockable shield. A pulse activates the relay that remains on even...