Title:
DRIVING CIRCUIT FOR POWER WINDOW
Document Type and Number:
Japanese Patent JPH1136700
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To prevent the generation of an unintended opening/closing accident of a power window by constituting a driving circuit in such a way that an opening relay and a closing relay are both closed simultaneously by a leak current when the driving circuit gets wet with water. SOLUTION: A final output stage transistor To of an opening side control circuit Eo and a final output stage transistor of a closing side control circuit Es are arranged adjacently to each other, and bases thereof face the ground 2 of a printed circuit board through equal micro gaps Go, Gs. When an electronic circuit gets wet with water by water immersion and dew condensation, insulation between the bases of the final output stage transistors To, Ts and the ground 2 is destroyed without operating an operating switch into an opening position or a closing position, and a leak current flows to the ground 2 through dummy leak load. As a result, the final output stage transistors To, Ts are both turned on to excite both coils, and an opening relay and a closing relay are both closed.
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Inventors:
YAMAOKA KOJI
Application Number:
JP19545097A
Publication Date:
February 09, 1999
Filing Date:
July 22, 1997
Export Citation:
Assignee:
HONDA MOTOR CO LTD
International Classes:
B60J1/17; E05F15/10; E05F15/00; H02H5/08; E05F15/16; (IPC1-7): E05F15/00; B60J1/17
Attorney, Agent or Firm:
Ken Ochiai (1 person outside)