This 80's Hands On Electronics circuit automatically switches from high light to low light when an oncoming car illuminates the sensor. The circuit is powered by the car's own battery.
This circuit shows how to implement a TTL compatible oscillator using a transistor. The circuit is...
This high impedance circuit for low voltage sensors was found in a 1980s documentation. The JFETs...
This sensitive circuit detects the live pole of a power grid or outlet. The circuit makes use of a high...