Title:
DRIVE CIRCUIT
Document Type and Number:
Japanese Patent JP2020136005
Kind Code:
A
Abstract:
To provide a drive circuit capable of quickly stopping an inductive load.SOLUTION: A drive circuit 101 for driving a positive electrode side relay 41 that uses a coil 41a, comprises: a first switch SW1 configured to switch an energization state between a first end of the coil 41a and a power supply Vcc; and a second switch SW2 configured to switch an energization state between a second end of the coil 41a and a ground terminal GND. In addition, the drive circuit 101 comprises: a first circuit 110 between the first end of the coil 41a and the ground terminal GND; and a second circuit 120 between the second end of the coil 41a and the power supply Vcc. The first circuit 110 is an arc-extinguishing circuit that discharges an electromagnetic energy in the coil 41a at drive stop control. The second circuit 120 is a circuit that permits energization between the second end of the coil 41a and the power supply Vcc at least at drive stop control.SELECTED DRAWING: Figure 2
Inventors:
TOYAMA KEISUKE
Application Number:
JP2019025994A
Publication Date:
August 31, 2020
Filing Date:
February 15, 2019
Export Citation:
Assignee:
DENSO CORP
International Classes:
H01H47/00; H01F7/18
Domestic Patent References:
| JPS5389969A | 1978-08-08 | |||
| JP2004134510A | 2004-04-30 | |||
| JP2002345102A | 2002-11-29 |
Attorney, Agent or Firm:
Tsuyoshi Yamada
Kyoko Hino
Hiroshi Matsuda
Yusuke Kita
Kyoko Hino
Hiroshi Matsuda
Yusuke Kita