Motion detection apparatus for electric motors

Details Motion detection apparatus for electric motors Motion detection apparatus for electric motors

1980-10-14

1984-04-03

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

324 51, 340648, 361 33, G01R 3102, G08B 2100, H02H 709

Patent

active

044410760

ABSTRACT:
An apparatus for detecting and indicating the motion of electric motors includes a voltage sensing module which can be connected to the power terminals of any known type of electric motor and a display module. In the primary embodiment of the invention the voltage sensing module senses the applied or self-generated voltages present between the motor windings, and when no voltage is present, the display module provides an output which may be an electrical signal, or a visual, tactile or audible display. The apparatus is inherently reliable and fail-safe. A failure of components within the apparatus causes a display module output indicative that the motor is running when in fact it is stationary.

REFERENCES:
patent: 4314193 (1982-02-01), Mortonson

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