Voltage comparison circuits for motion amplitude regulators or t

Details Voltage comparison circuits for motion amplitude regulators or t Voltage comparison circuits for motion amplitude regulators or t

1984-10-04

1987-02-17

Zazworsky, John

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307354, 307318, H03K 5153

Patent

active

046441883

ABSTRACT:
There is disclosed a driving and control circuit for a tuning fork resonator also adaptable to rotary motor control wherein an approximately sine wave signal from a motion sensor is applied to an instantaneous level detector which causes a control signal to be generated during that portion of the sine wave signal where the instantaneous level exceeds an adjustable reference level; the control signal causes the application of a current to the tuning fork drive which is in a direction to cause braking and reduction of motion amplitude. A distinctive feature of the instantaneous level detector is the fact that the sine wave signal is not rectified but is rather converted to a fluctuating direct current signal with a DC level accurately determined by an internal semiconductor voltage reference element.

REFERENCES:
patent: 3033996 (1962-05-01), Atherton
patent: 3502911 (1970-03-01), Lehman
patent: 3553490 (1971-01-01), Darrow

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