The random frequency doubler composed of CH7555

Published:2011/6/17 7:23:00 Author:Borg | Keyword: random frequency doubler | From:SeekIC

Usually, the frequency doubler composed of phase-lock loop has good functions, and it can get a high frequency multiply ratio, but the construction of the circuit is complex and it's costly. However, the homogenization of the output which is generated in the method of edge detection is bad. The figured circuit characterizes simpleness, wide dynamic range, good homogenization and so on. In the figure, the CH7555 timer is converted into a common multi-resonance oscillator on the right side, the rising of the control voltage will lead to the dropping of the output frequency. The input reaches the single stable circuit firstly.



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