BA532 Amplifier circuit diagram

BA532 is a low-frequency power amplifier circuit designed for an output transformerless (OTL) application, capable of delivering up to 5.8W of output power. It features built-in protection against load short-circuits, over-voltage, and over-temperature conditions. The amplifier is housed in a single 10-pin package. Under a supply voltage of 13.8V and with an 8-ohm load impedance, the circuit achieves a total harmonic distortion (THD) of 10% at the maximum output power of 5.8W. It also boasts a high ripple rejection ratio of 40dB. The amplifier utilizes pin BA511A, which is compatible with BA521. This circuit is commonly employed in car stereos, tape recorders, radios, television sets, and other audio devices as a power output stage.

The BA532 low-frequency power amplifier circuit is engineered to provide robust audio amplification while ensuring reliability through its integrated protection features. The design incorporates a feedback mechanism that stabilizes the output, minimizing distortion and enhancing sound quality. The amplifier's ability to deliver 5.8W of power at a supply voltage of 13.8V with an 8-ohm load makes it suitable for a variety of audio applications, particularly in environments where space and efficiency are critical.

The protection circuitry is essential for maintaining the integrity of the amplifier and the connected load. The short-circuit protection prevents damage to the amplifier in the event of a fault in the connected speaker, while over-voltage protection safeguards against voltage spikes that could otherwise lead to component failure. Similarly, the over-temperature protection ensures that the amplifier operates within safe thermal limits, enhancing its longevity and reliability.

The high ripple rejection ratio of 40dB indicates the amplifier's effectiveness in filtering out power supply noise, which is crucial for maintaining audio fidelity. This characteristic is particularly beneficial in automotive applications and consumer electronics, where power supply fluctuations can lead to audible interference.

Overall, the BA532 power amplifier circuit is a versatile and robust solution for audio amplification needs, providing high output power and essential protection features in a compact package. Its compatibility with various audio devices further enhances its utility in modern electronic applications. BA532 and low frequency power amplifier circuit for OTL circuit, output power up to 5.8W, equipped with load short-circuit, over-voltage and over-temperature protection circuit , single 10-pin package, the circuit characteristics are: When the supply voltage is 13.8V, 8 load impedance, THD 10%, the output power up to 5.8W, high ripple rejection ratio 40dB, pin BA511A, same BA521. Commonly used in car stereos tape recorders, radios, television sets and tape recorder as the power output circuit.