使用UC3842芯片做的60W开关电源，可用于笔记本电脑的电源，具有很好的参考价值。-use UC3842 do 60W switching power supply can be used to power a notebook computer, have a good reference value.

Descr iption The UC3842/UC3843/UC3844/UC3845 are fixed frequencycurrent-mode PWM controller. They are specially designed for Off-Line and DC to DC converter applications with minimum external components. These integrated circuits feature a

smps power supply circut using uc3842/45.... schematic diagram