自制的降压型晶体管开关电源

Self-made Buck Transistor Switching Power Supply

使用常用的与非门电路和双极性晶体管来制作开关电源。用14011B构成PWM方波电路,通过控制双极性晶体管的开断,把高的电信号转换成开关信号,通过近似无损耗的滤波,得到降低了的电源。利用负反馈,提高了输出电压的精度,抑制了电源纹波。

Using common NAND gate and bipolar transistor circuit to produce switching power supply. 14011B constitutes a square wave with PWM circuit, and bipolar transistor controls the breaking of the high-loaded into the signal switch signal, through the filter, the power has been reduced. The use of negative feedback to improve the accuracy of the output voltage checks the power supply ripple.