Found in old American documentation, this circuit that can be used as a shield, activates two relays and a neon lamp with different voltages.
This is a circuit that should not be used for readers interested in a fair game. The circuit...
This circuit has a general-purpose transistor to compensate for the non-linearity of the generated...
This circuit was found the Optoelectronics Sourcebook by Texas Instruments. Any phototransistor...