25 w stereo power amplifier circuit

Posted on Feb 5, 2014

BA5417 is a stereo amplifier IC with a lot of good features like thermal shut down, standby function, soft clipping, wide operating voltage range etc. The IC can deliver 5W per channel into 4 ohm loud speakers at 12V DC supply voltage. The BA5417 has excellent sound quality and low THD (total harmonic distortion) around 0. 1% at F=1kHz; Pout=0. 5W.

25 w stereo power amplifier circuit
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Setup and working of this stereo power amplifier circuit is somewhat similar to the BA5406 based stereo amplifier circuit published previously. C10 and C11 are DC decoupling capacitors which block any DC level present in the input signals. C2 and C6 couples the amplifiers left and right power outputs to the corresponding loud speakers. C1 and C5 are bootstrap capacitors. Bootstrapping is a method in which a portion of the amplifiers is taken and applied to the input. The prime objective of bootstrapping is to improve the input impedance. Networks R1, C3 and R2, C7 are meant for improving the high frequency stability of the circuit. C4 is the power supply filter capacitor. S1 is the standby switch. C8 is a filter capacitor. R3 and R4 sets the gain of the left and right channels of the amplifier in conjunction with the 39K internal feedback resistors. BA5406 stereo amplifier circuit: Simple stereo amplifier circuit that can deliver 5 watt per channel sound output into a 4 ohm speaker. Operates from 12V DC and requires very few external components. Suitable for low power car audio applications. TDA1554 stereo amplifier circuit: A very popular stereo amplifier design. This amplifier can output 22 watts per channel into 4 ohm loud speakers. This circuit can be also powered from 12V DC. Low distortion and noise. 2G—32 watts stereo amplifier circuit: High quality stereo amplifier design using TDA2050 IC. The circuit requires a...

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