40W audio amplifier

Posted on Feb 5, 2014

This is a very excellent 40W power amplifier design using TDA2030 IC and two transistors. The circuit employs only few components and does not require a dual power supply. The input signal is coupled to the non inverting input of TDA2030 through the DC decoupling capacitor C5. The TDA 2030 performs the major part of voltage amplification. As the I

40W audio amplifier
Click here to download the full size of the above Circuit.

C performs amplification, the power supply current to the IC varies according to the input signal. The variations in the positive supply pin are coupled to the base of Q1 and variations in the negative supply pin are coupled to the base of Q2. The major part of current amplification is done by these two complementary transistors.

Leave Comment

characters left:

New Circuits



Popular Circuits

NiCad charger with independent discharge
Arduino GoPro Hero2 Control
Programming Cable for Kenwood
Make a Simple Machine Gun Sound Effect Generator Circuit
Frequency/Tone Decoder Circuit Using TC9400 FVC
tv transmitter circuit 17
Speed control for PCB drill
Precision frequency counter tachometer
Bachmann Sound Tips