Title:
リレー制御回路および電源回路
Document Type and Number:
Japanese Patent JP7349475
Kind Code:
B2
Abstract:
A relay control circuit is configured to control opening and closing of a contact of a non-latch relay that includes the contact and a coil configured to operate the contact. The relay control circuit includes: a low-voltage power supply; a high-voltage power supply; a first transistor; a rectifying element; and a reference voltage node. A high-voltage terminal of the first transistor is connected to a positive electrode of the high-voltage power supply. A low-voltage terminal of the first transistor is connected to one end of the coil. An anode of the rectifying element is connected to a positive electrode of the low-voltage power supply. A cathode of the rectifying element is connected to one end of the coil. A negative electrode of the high-voltage power supply, a negative electrode of the low-voltage power supply, and the other end of the coil are connected to the reference voltage node.
Inventors:
Takeshi Shiomi
Application Number:
JP2021103537A
Publication Date:
September 22, 2023
Filing Date:
June 22, 2021
Export Citation:
Assignee:
Sharp Corporation
International Classes:
H01H47/32; H02H3/02
Domestic Patent References:
| JP2021504903A | ||||
| JP56174818U | ||||
| JP2008186645A | ||||
| JP2006185811A | ||||
| JP2003219314A |
Foreign References:
| US20150357141 |
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK