Title:
REVERSE CONNECTION PROTECTION CIRCUIT
Document Type and Number:
Japanese Patent JP2017195718
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a reverse connection protection circuit which has a small loss when a DC current is positively connected, and which surely protects an electric circuit in the case of being reversely connected.SOLUTION: A reverse connection protection circuit 100 comprises: a connector CO provided between a DC power source B and an electric circuit; a contactor control device CC that open/close controls the contactor; and a first SW element SW1 and a second SW element SW2 that includes a positive side first electrode S, a negative side second electrode D, and a control electrode G that turns on/off between the first electrode and the second electrode. The first electrode of the first SW element and the second SW element is connected to between the DC power source and the contactor. The second electrode of the first SW element is connected to a negative electrode of the DC power source. The control electrode of the first SW element is connected to between the DC power source and the contactor, and to a cable way between the contactor and the electric circuit. The second electrode of the second SW element is connected to a contactor control device through a contactor driving device. The control electrode of a second switching element is connected to between the second electrode of a first switching element and a first resistance.SELECTED DRAWING: Figure 1
Inventors:
TOTANI AKINOBU
Application Number:
JP2016085346A
Publication Date:
October 26, 2017
Filing Date:
April 21, 2016
Export Citation:
Assignee:
OMRON AUTOMOTIVE ELECTRONICS
International Classes:
H02J7/00; H02H11/00
Attorney, Agent or Firm:
Eichi International Patent Office
Yasuhiro Suzuki
Yasuhiro Suzuki