Title:
POWER SUPPLY ADAPTER DEVICE
Document Type and Number:
Japanese Patent JP3243781
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To make it possible to supply DC power even to different kinds of communication equipments by using such a mechanism that a necessary DC power supply and connection adapter are automatically selected and DC power is supplied to a communication equipment by using a controlling circuit.
SOLUTION: A relay driving circuit (1) 5 receives a signal from a controlling circuit 3 and then connects a connector (b) 23 to a DC power supply and tltereby power is supplied to a relay (B) 8 from the DC power supply. Therefore, a contact (B) 14 which is a contact of the relay (B) 8 closes as shown by a dot line and thereby one end of a cable 28 is connected to the connector (b) 23. A relay driving circuit (2) 6 receives a signal from the controlling circuit 3 and then connects a connector to the DC power supply 20 and thereby power is supplied to a relay contact (E) 11. Therefore, a contact (E) 17 which is a contact of the relay (E) 11 closes as shown by a dot line. When the relay contact (E) 17 closes, the other end of the cable 28 is connected to the DC power supply.
Inventors:
Kenichi Maruyama
Hideo Tanaka
Hideo Tanaka
Application Number:
JP16755895A
Publication Date:
January 07, 2002
Filing Date:
July 03, 1995
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
G09G3/18; G06F1/26; H02J1/00; H02J13/00; (IPC1-7): H02J1/00; G06F1/26; H02J13/00
Domestic Patent References:
| JP5336653A |
Attorney, Agent or Firm:
Takehiko Suzue
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