摘要
在医用理疗设备中,低频治疗信号通常为占空比、幅度可调的低频(100~200Hz)脉冲信号。其放大器的设计可选用的芯片很多。低频治疗仪的放大电路是低频理疗设备的基本电路,本设计选用Philip生产的著名音响放大集成电路TDA1521,用于低频治疗仪的功率放大电路,经过测试,满足了设计的需要。
Low frequency treat signal usually is pulse duration ration and amplitude may adjustment low pulse (100~200 Hz). There are many projects of chip are chosen for design of amplifier. Amplifier of low frequency instrument is basic circuit of low frequency treat instrument. This design chooses TDA1521 audio power IC of Philip,achieves design demand.
出处
《现代电子技术》
2007年第22期30-31,共2页
Modern Electronics Technique