Title:
INRUSH CURRENT LIMITING CIRCUIT FOR POWER SUPPLY CIRCUIT
Document Type and Number:
Japanese Patent JPH0530649
Kind Code:
A
Abstract:
PURPOSE: To make it possible to operate an inrush current limiting circuit positively and to limit inrush current even when an input switch is turned ON again immediately after turn OFF.
CONSTITUTION: Upon turn OFF of a switch 2, a switch 12 interlocked therewith is turned ON. Consequently, a capacitor 10 in a time constant circuit 8 is discharged. Since a relay 11 is turned OFF upon turn OFF of the switch 2 to release bypass state of a current limiting resistor 7, the current limiting resistor 7 can limit inrush current.
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Inventors:
YOSHIHARA NOBUTAKA
Application Number:
JP17634891A
Publication Date:
February 05, 1993
Filing Date:
July 17, 1991
Export Citation:
Assignee:
HITACHI SHONAN DENSHI
International Classes:
H02H9/02; H02M7/06; H02M7/12; (IPC1-7): H02H9/02; H02M7/06
Attorney, Agent or Firm:
Masami Akimoto
Next Patent: INRUSH CURRENT PREVENTING CIRCUIT