JFET

Simple two-channel amplifier

Overview

This is a two-channel power amplifier board. It uses the tda2030a op amp, which can also be directly replaced by the lm1875 (it is said that the lm1875 is better than the tda2030a). The audio signal is input through the 3mm interface, ±16v voltage power supply, and the output is two-channel. A knob potentiometer controls the two channels. Each channel volume circuit is simple to use after power-on. There is no switch. If you need to adjust the amplification factor, you only need to adjust the size of the feedback resistor. The model is actually a simple operational amplifier circuit.

Design Files

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Update:2025-05-08 08:37:55

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