As a portable audio power amplifier, is to highlight on the basis of the portable audio amplifier functions. And to highlight output power and distortion, and in the power supply characteristics is adopted, and is suitable for power supply USB audio equipment and use at the low voltage power. Portable Audio Power Amplifier can be used to voice public address, music appreciation, Kara OK accompaniment, in which good high-fidelity voltage amplification stage to the sound before the sound has a certain sense of depth and space dimension.
The design uses an integrated operational amplifier op-amp chip known as the Emperor's called NE5532 op-amp and low-voltage TDA2822M. Which is NE5532 dual op IC, which uses 8-pin DIP package. It contains two groups within the form of identical operational amplifiers. In addition to power supply, the two groups independent of each other. TDA2822 IC is widely used in the car stereo receivers and all sorts of small vehicle audio equipment.
Keywords: high-fidelity; integrated operational amplifier; integrated power amplifiers; NE5532; TDA2822M
