Any sensor or piezo capsule can be used as a sensor in this circuit. The integrated circuit is also common in our days and a table of sensor voltage levels.
This PUT oscillator circuit has a frequency of 1 Hz. We find it in a General Electric...
This circuit for the car uses LDRs as sensors and does not need to be connected to the lamp. The...
This circuit of an Electronics Now from the 90's produces an intelligent direction signal that has...