Wednesday, February 11, 2015

Circuit 20W Audio Amplifier Diagram using LM1875

Robotronicdiagram. - Do you want to build your self audio amplifier with low power but high quality. We suggest to build mono 20W Audio Amplifier that the schematic like in figure 1 below. The main component of Circuit 20W Audio Amplifier is IC LM1875.
Figure 1. Circuit 20W Audio Amplifier Diagram using LM1875
(Source :

Component List


Circuit diagram like in figure 1 above is Circuit 20W Audio Amplifier Diagram using LM1875. The LM1875 is a monolithic power amplifier offering very low distortion and high quality performance for consumer audio applications, the project work on single supply. Device overload protection consists of both internal current limit and thermal shutdown.

The LM1875 design takes advantage of advanced circuit techniques and processing to achieve extremely low distortion levels even at high output power levels. Other outstanding features include high gain, fast slew rate and a wide power bandwidth, large output voltage swing, high current capability, and a very wide supply range. The amplifier is internally compensated and stable for gains of 10 or greater.

The Original Article : "20W Audio Amplifier"

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