Electric current adjustable synchronous Rectifier switching power supply

The utility model discloses an electric current adjustable synchronous Rectifier switching power supply, it includes direct voltage source, NMOS pipe Q1, inductance L1, current sampling circuit, erroramplifier, PWM comparator and resistance R3, resistance R4, resistance R5, slide rheostat RV1 and reference voltage source. The utility model discloses can adjust output current, the application scope of extension switching power supply product improves the life of electronic product. 本实用新型公开了种电流可调的同步整流开关电源，其包括直流电压源、NMOS管Q1、电感L1、电流采样电路、误差放大器、PWM比较器、以及电阻R3、电阻R4、电阻R5、滑动变阻器RV1和基准电压源。本实用新型可对输出电流进行调整，扩展开关电源产品的适用范围，提高电子产品的使用寿命。