30 Watts Audio amplifier Circuit
30 watt audio amplifier circuit using TDA2040 is shown here. TDA2040 is a Class AB
monolithic integrated audio amplifier available in Pentawatt package. The IC has low
harmonic distortion, low cross over distortion and has a built in circuitry for short circuit protection.
In the circuit two TDA2040 ICs are wired in BTL (Bridge Tied Load) configuration in
order to deliver 30W output into an 8 ohm speaker at +/-16V DC supply. Capacitor C1 is
the input DC decoupling capacitor. Network comprising of components R2, C4, R3 provides
feedback for IC1 while R7, C6, R8 network provides feedback for IC2. Network C5, R5 and
C9, R9 provides high frequency stability. Capacitors C2, C3 filters the positive supply
rail while capacitors C7, C8 filters the negative supply rail.Notes.
A well designed and good quality PCB will always improve sound quality.
Use +/-16V DC dual supply for powering the amplifier.
Heat sinks are necessary for IC1 and IC2.
Load can be an 8 ohm speaker.
C2, C7 must be rated 25V and other electrolytics can be 10 or 15V.
monolithic integrated audio amplifier available in Pentawatt package. The IC has low
harmonic distortion, low cross over distortion and has a built in circuitry for short circuit protection.
In the circuit two TDA2040 ICs are wired in BTL (Bridge Tied Load) configuration in
order to deliver 30W output into an 8 ohm speaker at +/-16V DC supply. Capacitor C1 is
the input DC decoupling capacitor. Network comprising of components R2, C4, R3 provides
feedback for IC1 while R7, C6, R8 network provides feedback for IC2. Network C5, R5 and
C9, R9 provides high frequency stability. Capacitors C2, C3 filters the positive supply
rail while capacitors C7, C8 filters the negative supply rail.Notes.
A well designed and good quality PCB will always improve sound quality.
Use +/-16V DC dual supply for powering the amplifier.
Heat sinks are necessary for IC1 and IC2.
Load can be an 8 ohm speaker.
C2, C7 must be rated 25V and other electrolytics can be 10 or 15V.
Read more: http://www.circuitstoday.com/30-watt-amplifier-using-tda2040#ixzz1PNYZLPXZ
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