20W stereo amplifier based LM1876

20W stereo amplifier based LM1876
This two-channel amplifier provides power to 20 watts RMS from two line inputs. Ideal for use in computers since its price / performance / complexity is optimal. In the 20 watt stereo amplifier circuit observed only one stage of the system because the circuit stereo, second channel are identical. The figures in parentheses are equivalent to the terminal for second channel. The core of this project is the integrated circuits from National Semiconductor, the LM1876, which provides two power

60 / 120 watts Power Amplifier LM4780

60 / 120 watts Power Amplifier LM4780
Operating power amplifier integrated circuit LM4780 from National Semiconductor . What is special? Well, first of all - it is very low harmonic distortion. Typically, manufacturers indicate the maximum power of its regular genius crafts at THD 10%. At the same chip, the CG at the maximum specified power is only 0.5%! (more…)

1.4W Stereo Power Amplifier Circuit based TDA8552

1.4W Stereo Power Amplifier Circuit based TDA8552
A few more words on the chip. This is a bridge amplifier class AB integrated into the protection against overheating, short circuit protected outputs, suppression of inrush current when you turn on and off the amplifier. The only difference - a little more power output - 1.4 watts per channel. But nevertheless, it also does not require a heat sink and can be used anywhere. (more…)