用ＵＣ３８４３做开关电源设备，产生ＰＷＮ制作直流稳压电源-To do with the UC3843 switch power supplies, DC power supply generates PWN production

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