JPH04265095A - Power supply circuit device for electronic exchanger - Google Patents

Abstract

PURPOSE:To improve the reliability by receiving a control signal from a monitor means and controlling validation/invalidation of the switching-off operation of a power switch to prevent the occurrence of trouble due to erroneous power- on/off in the service presenting state. CONSTITUTION:A power switch 3 is made to supply power from a power supply circuit 2 to an electronic circuit device 6. A monitor circuit 4 monitors the operation state of the device 6 and outputs a control signal which turns on a control relay 5 in the service presenting state. Then, a relay contact 5a is closed, and power supply to the device 6 from the power supply circuit 2 is continued even if the power switch 3 is turned off. In the service non-presenting state of the device 6, the relay 5 is turned off, and the contact 5a is opened, and power supply from the power supply circuit 2 to the device 6 is stopped when the switch 3 is turned off.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply circuit device for an electronic exchange.

0002

[Prior Art] A power supply circuit device of a conventional electronic exchange is used to turn on the power to the electronic circuit devices that make up the electronic exchange.
A power switch is provided for disconnecting the power, and maintenance personnel manually operate the power switch to control the power supply to related electronic circuit devices.

0003

[Problems to be Solved by the Invention] In this conventional power supply circuit device, maintenance personnel manually operate the power switch of the power supply circuit device to turn on and off the power, and due to erroneous operation etc., the electronic circuit device There was a problem in that the power was cut off regardless of the operating state of the device, potentially causing a failure.

0004

[Means for Solving the Problems] A power supply circuit device of the present invention is a power supply circuit device that supplies and stops power to an electronic circuit device of an electronic exchange, which is a load, based on the on/off operation of a power switch. monitoring means for monitoring the operating state of the circuit device for providing a service and outputting a corresponding control signal; and receiving the control signal from the monitoring means and validating or disabling the disconnection operation of the power switch based on the control signal. and control means for controlling.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention. A power supply circuit device 1 includes a power supply circuit 2 that has a manually operated power switch 3 and supplies power to an electronic circuit device 6.
and monitor the operating status of the electronic circuit device 6 and provide services/
It is comprised of a monitoring circuit 4 that outputs a control signal corresponding to the non-supply state, and a control relay 5 that controls opening and closing of a relay contact 5a connected in parallel with the power switch 3 based on this control signal.

Next, the operation will be explained. By turning on the power switch 3, power is supplied from the power supply circuit 2 to the electronic circuit device 6. The monitoring circuit 4 monitors the operating state of the electronic circuit device 6, and outputs a control signal that turns on the control relay 5 in a service providing state (in-service). This closes the relay contact 5a of the control relay 5, so even if the power switch 3 is turned off, the power supply circuit 2 continues to supply power to the electronic circuit device 6.

When the electronic circuit device 6 is out of service, the control relay 5 is turned off.
Since it becomes FF and the relay contact 5a is opened, when the power switch 3 is turned off, the power supply circuit 2 immediately stops supplying power to the electronic circuit device 6.

[0009]

[Effects of the Invention] As explained above, the present invention provides an electronic circuit device that is out of service.
Since the power supply can only be turned off at certain times, it is possible to prevent failures due to erroneous power cut-offs when in service, thereby improving the reliability of the electronic exchange.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention.

[Explanation of symbols]

1 Power supply circuit device 2 Power supply circuit 3 Power switch 4 Monitoring circuit 5 Control relay 5a Relay contact

Claims (1)

[Claims] [Claim 1] Power is supplied to the electronic circuit device of the electronic exchange, which is a load, based on the on/off operation of the power switch.
In the power supply circuit device that performs the shutdown, there is provided a monitoring means for monitoring the operating state of the service provision of the electronic circuit device and outputting a corresponding control signal; 1. A power supply circuit device for an electronic exchange, comprising: control means for controlling validity/invalidity of a power switch disconnection operation.