The function of this automatic volume control circuit is to amplify signals without distorting its dynamic compression. ... The signal voltage at the gate of T1 must be as low as possible to influence ...

Circuit Diagram of Automatic Railway Gate Control using 8051 Circuit Design The major components of our project are an 8051 microcontroller (AT89C51), a Reflective Type IR Sensor, an L293D Motor ...

Automatic Gate Lamp Circuit. When the light falling on the LDR decreases, its resistance increases, and the current flowing to the upper and lower comparators of IC1 decreases. The input voltage of ...