Driving apparatus for stabilizing operation of an extensible-ret

Details Driving apparatus for stabilizing operation of an extensible-ret Driving apparatus for stabilizing operation of an extensible-ret

1995-12-29

1997-11-04

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Motor protective condition responsive circuits

361 31, 318650, 388916, H02H 504

Patent

active

056846622

ABSTRACT:
The driving apparatus for a power antenna, e.g. an extensible-retractable automotive radio antenna, is provided with stability function which controls the operation of the motor driving the power antenna until the power antenna is varied into a state for performing normal operation, and provides hysteresis to prevent a state of the controlling signal from being varied too often by a voltage drop generated in rotation of the motor.

REFERENCES:
patent: 4140952 (1979-02-01), Miller
patent: 4203059 (1980-05-01), Kraus
patent: 4950091 (1990-08-01), Harada

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