Electromagnetic driving circuit

Details Electromagnetic driving circuit Electromagnetic driving circuit

1988-02-12

1989-04-25

Hix, L. T.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

Systems for magnetizing, demagnetizing, or controlling the...

361159, 361203, 368166, 368181, H01H 4700, H01H 4712, G04B 1716, G04F 500

Patent

active

048253324

ABSTRACT:
An electromagnetic driving circuit for driving a pendulum comprises a coil for detecting and driving a permanent magnet, a comparison circuit for comparing an induction voltage induced in the coil with a reference voltage, a generating circuit for generating driving pulses of a predetermined pulse width in response to outputs of the comparison circuit, and a driving circuit for flowing a driving current through the coil in accordance with the driving pulses. The timing at which the driving pulses are generated and/or the pulse width of the driving pulses are automatically adjusted to optimum values to improve the driving efficiency of the pendulum.

REFERENCES:
patent: 4196579 (1980-04-01), Schaefer

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