This 20 Watt Power Amplifier circuit is used as a car audio amplifier. Its main component is 20W Bridge Amplifier For Car Radio TDA2005 IC.
This TDA 2005 IC was designed specifically in car audio system for power boosting applications. This IC has a protection against short circuit and overheating. In the above circuit use a bridge configuration that will deliver 20W of output power with 2 ohm speakers. This 20 Watt Power Amplifier circuit requires a power supply voltage 14.4 volts .
Parts list : R1 : 120 K R2 : 1K R3, R4 : 1 ohm R5 : 2K R6, R7 : 12 ohm C1, C9 : 2uF C2 : 10uF C3, C8 : 220uF C4, C7 : 100uF C5, C6 : 0.1uF IC : TDA 2005