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555 Simple Linear Sawtooth Wave Generator Circuit

2017-03-19 13:53  
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555 Simple Linear Sawtooth Wave Generator Circuit
555 Simple Linear Sawtooth Wave Generator Circuit
As shown, after 555 triggering andfliping,the capacitor C generates the sawtooth waveby charging,and this wavecan be the scanningvoltage of the oscilloscope, but its linearity is not very well, so this circuit uses the constant current source instead of the timing resistor during themonostable and transient time, this can get the linear sawtooth wave. The linear ramp-up time is shown below.