Electrical drive circuits

Details Electrical drive circuits Electrical drive circuits

1989-12-28

1992-07-14

Stephan, Steven L.

Electricity: motive power systems

Impact, mechanical shock, or vibration-producing motors

318130, 318126, H02K 3300

Patent

active

051306182

ABSTRACT:
A drive circuit including a power stage [PSH/PSV] and a control stage therefor to co-operate to supply energy in a controlled manner with regard to a reference value to an inductive load when connected in operation, means [R21, R41/R25, R42] in the power stage to produce a lower level signal indicative of the energization of the load, means [HPR/VPR] to generate a reference value for the energization signal representing a required energization, means [U3.3/U3.4] to compare the energization signal and the reference value and generate an error signal representing any difference therebetween and means [U2.1/U2.3, U2.4] to apply said error signal to said control stage to alter the energy supplied to the load towards the required condition, the reference value may also be related to the frequency at which the load is energized (SE, FBF, OSC, D4).

REFERENCES:
patent: 4479098 (1984-10-01), Watson
patent: 4567451 (1986-01-01), Greenwood
patent: 4811835 (1989-03-01), Bullivant et al.
patent: 4823053 (1989-04-01), McCracken et al.

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