G - Physics – 04 – F
Patent
G - Physics
04
F
G04F 10/10 (2006.01) G01R 21/133 (2006.01) G04F 10/04 (2006.01)
Patent
CA 2091003
An actual operating time indicator includes: a lifting motor for lifting a load up/down; a power detection unit for detecting an input power based on a current and a voltage supplied to the motor, and converting the input power into a first voltage proportional to the input power; a voltage-to-periodic pulse conversion unit connected to the power detection unit for receiving the first voltage and converting the first voltage into the periodic pulse proportional to the first voltage; a counter unit connected to the voltage- to-periodic pulse conversion unit for counting and integrating the periodic pulse to obtain an integrated power; and a display operatively connected to the counter unit for indicating the integrated power as an actual operating time of the motor.
Tsukahara Kazuhito
Watanabe Hisatsugu
Cassan Maclean
Kabushiki Kaisha Kito
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