It can achieve a fixed output of DC voltage in the universal input range of ac 80 ~ 265 V. It owns the advantages of high efficiency, low total harmonic distortion, PF near to 1.
该方案能在80 ~ 265 V宽输入电压范围内得到稳定直流电压输出，具有效率高、总谐波畸变率低、功率因数接近为1等特点。
The constant current supply for the input circuit is adopted, improving the linear relation between the signal voltage v, and temperature t.
该电路采用恒流源供电的输入电路，提高了信号电压v _ t与温度t的线性度。
The threshold voltage is set by output channel comprised of pulse generator, photoelectric coupler and F/V converter, and the detection result is input through photoelectric coupler.
利用可变频脉冲发生器、光电耦合器和F/V转换器组成输出通道，设定阀值；
应用推荐