RCC电路间歇振荡分析与改进研究

Analysis and research on intermittent oscillatory of RCC circuit

RCC电路是一种可以用较少的几个器件获得高效工作的电路,但R CC电路在控制电流过大时会有间歇振荡的弊端现象发生,进而导致电路的振荡频率变化范围较大(可从几百变到几千赫兹),输出功率较大时易使变压器等器件产生异常噪音。此现象并非一无是处,通过对R CC电路改进分析得出在电路输出较小功率时,给电路加上一个脉冲信号便可启动,开关电路借助间歇振荡时工作在低能耗的状态;RCC电路性价比高,成本低廉,在高性能电源设备使用中能广泛普及。

RCC circuit is a kind of high efficient working circuit by use of several devices, but excessive control current will cause the occur of intermittent oscillation, and the oscillation frequency of the circuit changes in the large scope from hundreds of hertz to several thousand hertz. The output power is more likely to make the transformer device to produce abnormal noise. But this phenomenon are not completely useless, after improving the RCC circuit, it can be concluded that the circuit can start in applying a pulse signal if the output power is small. The switch circuit operates in low-power state by means of intermittent oscillation. The result is that RCC circuit has high performance price ratio and low cost ,so it is widely popular in high performance power supply equipment.