Title:
機器・装置用電源回路
Document Type and Number:
Japanese Patent JP6866698
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a power source circuit for an apparatus and a device, the power source circuit being designed to be inexpensive and have a simple configuration that ensures safety even if any of a plurality of power supply lines for a power source has trouble.SOLUTION: A relay circuit of electric shock prevention type, which is an example of a power source circuit for an apparatus and a device, comprises two relays 3, 4, in which contact parts for relaying power supply are respectively interposed in and connected to power supply paths between two power source cords 103, 104 in a device body and power source parts 5, 6, respectively, of two systems. Power source plugs 1, 2 to be inserted in respective power source receptacles are connected to respective leading ends of the power source cords 103, 104. By virtue of the circuit configuration in which a power supply path on an input side of a contact part relating to one relay 3 is connected to an excitation coil of the other relay 4 whereas a power supply path on an input side of a contact part relating to the other relay 4 is connected to an excitation coil of the other relay 3, a voltage in the power supply path relating to the relay 3 can be used for excitation relating to the relay 4 whereas a voltage in the power supply path relating to the relay 4 can be used for excitation relating to the relay 3.SELECTED DRAWING: Figure 2
Inventors:
Shiro Takashima
Application Number:
JP2017045081A
Publication Date:
April 28, 2021
Filing Date:
March 09, 2017
Export Citation:
Assignee:
株式会社リコー
International Classes:
H02J1/00; G03G15/00; G03G21/00
Domestic Patent References:
| JP2003244853A | ||||
| JP2008164825A | ||||
| JP4067725A |
Attorney, Agent or Firm:
Takashi Munakata