Title:
DC POWER SOURCE INPUT CIRCUIT
Document Type and Number:
Japanese Patent JPS5367842
Kind Code:
A
Abstract:
PURPOSE: The circuit which operates the return system relay only when the DC power source is connected in reverse polarity, and reverses the polarity of the DC power source to be connected to instruments, and is so constituted that, even if the DC power source is connected reversely, instruments are not broken, and normal operations can be performed.
Inventors:
TSUZUKI TOSHIHIKO
CHIGA KIYOSHI
CHIGA KIYOSHI
Application Number:
JP14215076A
Publication Date:
June 16, 1978
Filing Date:
November 29, 1976
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H02H11/00; (IPC1-7): H02H11/00
Domestic Patent References:
| JPS3917508Y1 |