调频调宽脉冲开关电源触发电路的设计

The Design for Trigger Circuit of Frequency and Width Modulated in Power Source

采用2片555时基电路,其中一片控制频率,另一片控制占空比.产生频率为30H z～10M H z连续可调;在10M H z频带宽度内,占空比为1%～99%连续可调的矩形触发脉冲,且频率和占空比均可独立调节.

Using two pieces of 555 time base circuits, one control frequency another control width, produce adjustable series frequency in 30 Hz - 10 MHz. The width of pulse can change from 1% to 99 % in 10 MHz range of frequency. Frequency and width both can be adjusted singly.