In this paper, by the use of dual-current control mode and intelligent UC3842 chip as the core, a single-chip switching power supply circuit are presented.
本文使用双电流控制模式，以智能芯片uc 3842为核心，设计了单片开关电源的实用电路。
2
By using an active clamp circuit, the power transformer core is symmetrically reset. Zero voltage switching conditions are achieved over a broad input voltage and output current range.
利用有源钳位电路实现主变压器铁心对称复位，功率开关在宽输入电压和宽负载电流范围内零电压开关。
3
A novel ZVT power factor correction circuit is proposed, in which the saturable core and the-capacitor are added to the auxiliary switching network.