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:

New Circuits

.

 


Popular Circuits

Oscilloscope 4 Channel Adapter
Sound Controlled Switch
VHF UHF HF active antenna electronic circuit project with explanation
Parking sensor circuit
Digital-Circuits
High Frequency Generator Circuit
Infrared Model Train Detector Circuit
Home Electrical Wiring
1995 camaro: just swapped the engine/ trans with cradle wheel well
Giving a false speed reading
Light touch variable delay circuit
Multi-channel data acquisition ISO100 isolation circuit of a programmable gain amplifier



Top