Schmitt trigger noun phr. ['ʃmɪt ,trɪgǝ] M20.
[from Otto H. Schmitt (1913-98), US biophysicist and electronics engineer.]
Electronics. More fully Schmitt trigger circuit. A bistable circuit in which the output increases to a steady maximum when the input rises above a certain threshold, and decreases almost to zero when the input voltage falls below another threshold.

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