Title:
リレー駆動装置
Document Type and Number:
Japanese Patent JP4378585
Kind Code:
B2
Abstract:
A relay driving apparatus to be automatically restores a relay driving state if the relay is inadvertently turned off. The relay driving apparatus supplies a predetermined rated voltage to the relay RL1 to shift the relay RL1 to a driving state and then reduces the voltage to maintain the driving state of the relay RL1. The driving state of the relay RL1 is monitored, and on the basis of the monitoring result the relay RL1 is again provided with the rated driving voltage. Alternatively, the rated voltage is periodically supplied to the relay RL1 during the driving state, or after a predetermined rated voltage is supplied to the relay RL2 to set the relay RL2 to a driving state or non-driving state, the state is monitored and the relay RL2 is periodically subjected to the rated driving operation on the basis of the monitoring result, thereby enhancing the operation reliability and promoting energy savings.
Inventors:
Keiji Shirato
Application Number:
JP2000095288A
Publication Date:
December 09, 2009
Filing Date:
March 29, 2000
Export Citation:
Assignee:
ソニー株式会社
International Classes:
H01H47/04; H01H47/32; H04N5/00
Domestic Patent References:
| JP5166444A |
Attorney, Agent or Firm:
Keiki Tanabe