Title:
POWER SUPPLY CIRCUIT
Document Type and Number:
Japanese Patent JP2019160487
Kind Code:
A
Abstract:
To provide a configuration capable of detecting an ON state and an OFF state of a main switch in a power supply circuit having a self-holding circuit.SOLUTION: A power supply circuit 1 comprises: a main switch SWA; and a self-holding circuit 20 which electrically connects a power supply 3 with a control device 2, supplies power from the power supply 3 to the control device 2 when the main switch SWA is in an ON state, and controls power supply from the power supply 3 by a control device 2 regardless of a driving state of a main switch SWA in a state where power is supplied to the control device 2. The power supply circuit 1 comprises a main switch circuit 10 including the main switch SWA and a main switch driving state detecting unit 11 for detecting an ON state and an OFF state of the main switch SWA. The main switch circuit 10 is a circuit branched from the self-holding circuit 20 with respect to the power supply 3, and does not supply power from the power supply 3 to the control device 2.SELECTED DRAWING: Figure 1
Inventors:
KATO TEPPEI
Application Number:
JP2018043089A
Publication Date:
September 19, 2019
Filing Date:
March 09, 2018
Export Citation:
Assignee:
SINFONIA TECHNOLOGY CO LTD
International Classes:
H01H9/54; B60R16/02; H01H47/00; H01H47/04
Domestic Patent References:
| JP2015137068A | 2015-07-30 | |||
| JPH11311436A | 1999-11-09 | |||
| JP2005170070A | 2005-06-30 | |||
| JP2005014733A | 2005-01-20 |
Attorney, Agent or Firm:
Suzuki Kazuaki
Torii Hiroshi
Torii Kazuhisa
Katsuaki Matsukawa
Taizo Jimbo
Masaya Nakatsuka
Torii Hiroshi
Torii Kazuhisa
Katsuaki Matsukawa
Taizo Jimbo
Masaya Nakatsuka