Title:
CONTROL CIRCUIT FOR RELAY
Document Type and Number:
Japanese Patent JP3724207
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To release melt-sticking of contacts certainly in a short time by applying effective impact pulses to a relay when multi-sticking is generated.
SOLUTION: This control circuit detects melt-sticking of contacts of a relay 2 and feeds an output signal to a microcomputer 1, which is installed to control the relay 2, and the first driving means 6 is connected with the output port of the microcomputer 1 while the second driving means 7 is furnished at another output port so that the relay 2 is put in parallel drive. Thereby effective impact pulses can be applied by driving alternately the first and second driving means when the contacts have gone in melt-sticking, and such an occurrence can be released certainly and quickly.
Inventors:
Mitsuhiko Kikuoka
Satoru Shibata
Satoru Shibata
Application Number:
JP21214998A
Publication Date:
December 07, 2005
Filing Date:
July 28, 1998
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
H01H47/00; H01H47/04; H01H47/32; H01H3/00; (IPC1-7): H01H47/00; H01H47/04; H01H47/32
Domestic Patent References:
| JP59194324A | ||||
| JP8055721A |
Foreign References:
| EP0598612A1 |
Attorney, Agent or Firm:
Fumio Iwahashi
Hiroki Naito
Daisuke Nagano
Hiroki Naito
Daisuke Nagano