Joke Collection Website - Mood Talk - Lm 1875 is a power amplifier with low sound and poor quality!
Lm 1875 is a power amplifier with low sound and poor quality!
Now LM 1875 has been discontinued. There are many fakes in the market. We should ask experienced people to help us look at it and identify the authenticity. Fakes were polished in 2030, and some were produced by unknown small factories. The sound quality is not good
It is suggested to choose the national semi-standard circuit. You can find LM 1875 in www.national.com, where there is a standard track.
In addition, pay attention to grounding when making the amplifier board. All kinds of grounding wires should be connected in a star shape, that is, multiple grounding wires are connected at one point, which can be selected on the pin of large filter capacitor. If a potentiometer is used, the casing of the potentiometer should be grounded.
The problem of low voice is estimated to be solved by eliminating the above points.
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