ON-VEHICLE ELECTRONIC CIRCUIT - AUTO NETWORK GIJUTSU KENKYUSHO

Title:

ON-VEHICLE ELECTRONIC CIRCUIT

Document Type and Number:

Japanese Patent JP2003154903

Kind Code:

A

Abstract:

To prevent a communication failure while suppressing current fluctuation between an electronic unit and a battery.

A photo-coupler 23 equipped with a light emitting element 23a and a light receiving element 23b is used as a signal communication means transmitting a signal between a control part and a drive switching element. The light emitting element 23a is connected to the side of an earth terminal GND1 of a microcomputer 21, and the light receiving element 23b is connected to the side of a minus terminal GND2 of a battery 26. The light emitting drive of the light emitting element 23a of the photo-coupler 23 can be prevented easily from being affected by a ground floating at the side of the minus terminal GND2 of the battery 26 resulting from an inductor 28.

Inventors:

MIZUNO FUMIAKI

Application Number:

JP2001352854A

Publication Date:

May 27, 2003

Filing Date:

November 19, 2001

Export Citation:

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Assignee:

AUTO NETWORK GIJUTSU KENKYUSHO
SUMITOMO WIRING SYSTEMS
SUMITOMO ELECTRIC INDUSTRIES

International Classes:

B60R16/02; B60Q1/00; G05F1/56; H02J7/00; H02M3/155; (IPC1-7): B60R16/02; B60Q1/00; G05F1/56; H02J7/00; H02M3/155

Attorney, Agent or Firm:

Shigeaki Yoshida (2 outside)

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