Frequency jitter circuit and frequency jitter generating method
A technology of frequency jitter and circuit, applied in the direction of electric pulse generator circuit, differential amplifier to generate pulse, electrical components, etc., can solve the problems of external chip, increase of PCB board volume and cost, etc., and achieve the effect of simple circuit and easy realization
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[0047] The content of the present invention will be further described below in conjunction with the accompanying drawings.
[0048] Such as figure 1 As shown, it is a structural diagram of the frequency dithering circuit 100 of the present invention, including:
[0049] An oscillation circuit 101, the oscillation circuit 101 generates a sawtooth wave signal 203;
[0050] Decoding circuit 102, the oscillating frequency signal 200 is input into the decoding circuit 102, and the decoding circuit 102 is controlled to generate several pulse signals 201;
[0051] A level selection circuit 103, the pulse signal 201 controls the level selection circuit 103 to generate an output level signal 202 that varies with the pulse output signal 201;
[0052] The comparator circuit 104 compares the sawtooth wave signal 203 and the output level signal 202 to generate a frequency jitter signal 204. With the change of the output level signal 202, the duty cycle of the frequency jitter signal 204 ...
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