Power-window jamming preventing apparatus

Details Power-window jamming preventing apparatus Power-window jamming preventing apparatus

2006-03-07

2006-03-07

Duda, Rina (Department: 2837)

Electricity: motive power systems

Automatic and/or with time-delay means

Movement, position, or limit-of-travel

C318S280000, C318S283000, C318S432000, C318S434000, C049S026000, C049S028000

Reexamination Certificate

active

07009352

ABSTRACT:
A current sensing circuit includes; a shunt resistor, on which a motor current is flown; a reference resistor which has a resistance value that is n times the shunt resistor; and a current following circuit. The current following circuit includes: a following current control circuit, which controls the following current and generates a first reference voltage; and a capacitor which generates a second reference voltage indicating an average value of the first reference voltage. A first comparator compares a third reference voltage higher than the first reference voltage with the second reference voltage, and outputs the current limitation control signal. A motor current sensing range expanding circuit expands a motor current sensing range by increasing a ratio of the current sensing circuit having the shunt resistor and the reference resistor.

REFERENCES:
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patent: 5729104 (1998-03-01), Kamishima et al.
patent: 5734245 (1998-03-01), Terashima et al.
patent: 5977732 (1999-11-01), Matsumoto
patent: 6051945 (2000-04-01), Furukawa
patent: 6359408 (2002-03-01), Tyckowski
patent: 6548979 (2003-04-01), Boisvert et al.
patent: 6867563 (2005-03-01), Ohshima
patent: 2002-295129 (2002-10-01), None

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