We found this circuit in Radio Electronics from the 90s. The components are current. The sensor is a common general-purpose transistor. The connection to the sensor is made by twisted pair.
This Cross Fader as it is also known causes the brightness of one lamp to increase while the...
This circuit will trigger a buzzer with an oscillator if the ignition key is removed with the...
This circuit was obtained from a 2005 Linear Technology application manual. The circuit is...