Suppress Jitter With Hysteresis Circuit

Posted on Feb 5, 2013

When the comparator`s output changes its state from low to high, the rising edge of the output pulse, differentiated by the Cl/Rl chain, opens Ql. This blocks comparator via its strobing input and sustains its output in the state for a period of time, defined by the time constant RlCv After CI is charged by the current flowing through R1, Ql is shut off and the comparator is released. When the comparator`s output state changes from high to low, a similar process, involving elements R2, C2, and Q2, occurs.

Suppress Jitter With Hysteresis Circuit
Click here to download the full size of the above Circuit.

In many applications, the output transition in only one direction is of vital importance, and the elements, which provide temporal hysteresis for the opposite direction transition, can be omitted.

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