Two Input and Gate

To demonstrate the function of operational amplifier using TL081 and L272 with discrete components different value of resistors, capacitor. Input can be applied from microphone, LDR. Offset null control is also provided. Output can be fed through the power amplifier into a loudspeaker.

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Mounted on transparent covered box. Diagram provide with three different color four mm sockets for easy identification of terminals.

Diode mounted on transparent covered base for maximum visibility to students. Two four mm sockets one red and one black are provided for easy connections.