This circuit is the audio amplifier circuit has a very popular one.This is a simple circuit. Small pieces of equipment. And Watt are high.The circuit uses IC number LM1875, which is under the protection circuit IC output or Too short circuit. And a significant distortion as low as 0.015% at a frequency of 1kHz.
This circuit uses positive, negative ground power supply to get the audio signal with both halves of the signal swing, positive and negative halves,The sound that came out crystal clear.Work is. When paying into the audio input. Audio is through R1, R2, C1 and R3 to limit the audio signal appropriately.And limit the noise to the input signal mixed down to the ground.Then sends a signal to noise to the input pin of IC 1.A noninterting pin, amplifier non-return phase.Out of the 4 output pins to access the speakers.The R6 and C4 eliminate noise mixed with the output down to the ground.And another part of the audio output pin 4 of integrated circuit will be fed back into place through R5 to pin 2, which R4 and R5 determines the rate of boost up, can be calculated from R5/R4,will gain equal to 15 times, With a C2 to meet high frequencies better.
Related Links
More circuit about Hi-Fi Audio amplifier
More about single chip amplifier circuit
More circuits uses LM1875
24 Watt Class A Amplifier by 2N3055
45W Single Chip Amplifier by LM3876
35W Hi-Fi AUDIO POWER AMPLIFIER by TDA2050
This entry was posted on Wednesday, September 29th, 2010 at 1:11 amand is filed under Power Amplifier
