Transistor intercom circuit


Posted on Feb 6, 2014

Here is a simple but effective intercom circuit that is based fully on transistors. The circuit is based on a three stage RC coupled amplifier. When the pushbutton S2 is pressed, the amplifier circuit wired around T1 & T2 becomes an astable multivibrator and starts producing the ringing signals. These ringing signals will be amplified by the transi


Transistor intercom circuit
Click here to download the full size of the above Circuit.

stor T3 to drive the speaker. When the push button S2 is released the circuit will behave as an ordinary amplifier and you can talk to the other side through it. To construct a two way intercom, make two identical copies of the circuit given below and connect it according to the given connection diagram. The stand by current consumption of this circuit is around 20mA.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    NiCad charger with independent discharge
    Fantastic Simulated Laser Circuit
    mpc576h-amplifier-circuit-diagrams.html
    FM Moulator with IC 555
    60W Amplifier
    Difficulty with Common Emitter Amplifier
    Final Project circuit
    fm receiver basics
    microcontroller circuit schematics
    GSM Remote Control 2 IN and 2 OUT Part 2 Schematic
    Multi-physics Model
    A constant current source of the differential amplifier circuit



    Top