Circuit Stereo Amplifier LM1876 20W
In the 20 watt stereo amplifier circuit observed only one stage of the system because the circuit stereo, second channel are identical.
The core of this project is the integrated circuits from National Semiconductor, the LM1876, which provides two power operational amplifier with mute and standby function.
The input signal, that having been conditioned and leveled, will enter into non-inverting amplifier input. At the output of op amp part of the resulting signal is fed back to the inverting amplifier to form a feedback network. Because the circuit is internally balanced when working with source item is not necessary to install the output BootStrap capacitor.