Speed-dependent signal generator

Details Speed-dependent signal generator Speed-dependent signal generator

1983-02-16

1985-07-30

Zazworsky, John

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307260, 324166, 324173, 328 1, 123414, 123617, H03K 5153

Patent

active

045324379

ABSTRACT:
An operational amplifier is used as a threshold switch and an inductive generator that provides a wave used for timing operation of the threshold switch also feeds a circuit that produces a reference current corresponding to the average absolute magnitude of the generator voltage, which, in turn, is fed to at least one current mirror, the output of which is used to shift the operating threshold of the operational amplifier. A second current mirror is used in alternation with the first for half-waves of the generator voltage which are of opposite polarity and a positive feedback connection around the operational amplifier provides a switching characteristic having an appropriate amount of hysteresis so that the inherent timing shift is compensated on switching in response to both positive-going and negative-going portions of the generator output wave.

REFERENCES:
patent: 4169232 (1979-09-01), Henrich
patent: 4293814 (1981-10-01), Boyer

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