Power Buzzer

Posted on Feb 4, 2014

A powerful buzzer in the room, combined with a pushbutton at the bottom of the stairs or in the kitchen, could be very handy in such situations. The heart of this circuit is formed by IC1, a TDA2030. This IC has built-in thermal protection, so it`s not likely to quickly give up the ghost. R1 and R2 apply a voltage equal to half the supply voltage to the plus input of the opamp. R3 provides

Power Buzzer
Click here to download the full size of the above Circuit.

positive feedback. Finally, the combination of C2, R4 and trimmer P12 determines the oscillation frequency of the circuit. Power Buzzer Circuit Diagram.

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    voltage inverter
    Tiny Tuned Loop Antennas
    Ring Modulator
    Swept sine oscillator has quadrature output
    Joule Ringer 3
    Siren Driver circuit
    A typical liquid crystal display inverter circuit OZ965
    CAT3200 CAT3200-5 drive white schematic