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Showing posts with label Audio Amplifier. Show all posts
Showing posts with label Audio Amplifier. Show all posts

10W Audio Amplifier Circuit by TDA2030

The amplifier circuit by ic TDA2030 described here is an powerful audio amplifier with output power of 10W. TDA2030 is a monolithic IC, used as a low frequency class AB Amplifier. It has high output current and very low distortion. This 10W audio amplifier using TDA2030 is good for home/ small room.

Circuit Diagram of '10W amplifier circuit using IC TDA2030' with power supply.


Fig-1: Circuit Diagram of 10W audio amplifier

LA4440 Amplifier Circuit

LA4440 is a dual channel audio amplifier IC. It can be used in two modes; one is Stereo amplifier and another Bridge amplifier mode. The LA4440 is a monolithic linear IC from Sanyo. Here I give the both circuit mode of amplifier using IC LA4440.

Features of IC LA4440

  • It has 46dB of ripple rejection
  • Low distortion
  • Good channel separation
  • Thermal protector
  • Overvoltage protector
  • Surge voltage protector

LA4440 Stereo Amplifier Circuit

When the IC LA4440 is Stereo mode in the circuit, its output power is 6w+6w. In stereo mode use two pieces speaker of 2Ωto8Ω.
In the stereo amplifier configuration given below, C11 and C12 are output capacitor. But i ignore them from the circuit of bridge amplifier.

Fig-1: LA4440 Stereo Amplifier Circuit Diagram

Simple Circuit Diagram for Amplifier by TDA7052

This is a very small and simple Circuit Diagram for Amplifier of 1W mono audio output. The amplifier is based on a single IC TDA7052. It is in 8-pin DIL (Dual-In-Line) package. The IC TDA7052 is specially designed for battery-operated audio circuit for amplifier like tape recorders, radios etc.

Circuit Diagram of Simple 1W Audio Amplifier:

Fig: Simple Circuit Diagram for Amplifier
The power supply for this amplifier is 3V to 12V, but we recommend to use 6V power supply. If you want to going with battery, no problem the amplifier can also operate by even 3V Battery cell . The IC TDA7052 no needed any Heat Sink. In the circuit R2 is a Variable Resistor, used as volume controller. Capacitor C1&C2 used to filtering the supply voltage. If battery is used instead of power supply then it(C1&C2) isn’t needed anymore in the circuit. Use an 8Ω speaker at the output to hearing the mono amplification of audio.
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