Title:
INDUCTIVE LOAD DRIVE CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2010/018803
Kind Code:
A1
Abstract:
An inductive load drive circuit (10) comprises a control circuit (11) for controlling the switching of a switch circuit (12) and a protective circuit (13). The switch circuit (12) switches conduction and non-conduction of an inductive load (M) when a battery (Ba) is connected normally. When the battery (Ba) is connected reversely, the inductive load (M) can conduct in the opposite direction to that of when the battery (Ba) is connected normally. The protective circuit (13) has at least a current interruption section (Q1) which conducts when the switch circuit (12) switches the operating state of the inductive load (M) from conduction to non-conduction during normal connection of the battery and does not conduct in response to reverse connection when the battery is connected reversely.
Inventors:
KIMOTO KAZUHIRO (JP)
Application Number:
PCT/JP2009/064101
Publication Date:
February 18, 2010
Filing Date:
August 10, 2009
Export Citation:
Assignee:
AUTONETWORKS TECHNOLOGIES LTD (JP)
SUMITOMO WIRING SYSTEMS (JP)
SUMITOMO ELECTRIC INDUSTRIES (JP)
KIMOTO KAZUHIRO (JP)
SUMITOMO WIRING SYSTEMS (JP)
SUMITOMO ELECTRIC INDUSTRIES (JP)
KIMOTO KAZUHIRO (JP)
International Classes:
G05F1/10; H02H11/00
Foreign References:
| JPH0822336A | 1996-01-23 | |||
| JPS54159157A | 1979-12-15 | |||
| JP2007228436A | 2007-09-06 |
Attorney, Agent or Firm:
AKATSUKI UNION PATENT FIRM (JP)
Patent business corporation dawn joint patent firm (JP)
Patent business corporation dawn joint patent firm (JP)
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