JPS6185022A - Constant-voltage power supply device for electronic copier, etc. - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION This invention relates to a constant voltage power supply device for a copying machine or the like, in which an instantaneous load is distributed by using a battery and the load on a power supply circuit is averaged.

Prior Art The load of a constant voltage power supply installed in a conventional electronic copying machine is as follows.
Most of the loads were static, such as sequence controllers and high voltage generators, and the difference between the instantaneous overload value and the steady value was only a small one.

Problems to be Solved by the Invention However, in recent years, as copying speeds have increased and driving parts have become more direct current, the load on constant voltage power supplies has been increasing. - For use with loads that require rapid start-up characteristics, such as in the evening.
The instantaneous load current is significantly increased compared to conventional copying machines, and as a result, a larger constant voltage power supply is required, causing an increase in costs.

This invention was made with the aim of improving the above-mentioned conventional problems.

Ninth Means and Effects for Solving the Problem A converter for converting AC input into DC output, a battery charged by the output of the converter, a regulator supplying a stabilized specific voltage to each load, and the above. By providing a switch element connected between the batteries and turned off when no AC input is obtained and the battery is not charged to prevent wasteful discharge of the battery, and a control circuit for controlling this, Constant voltage power supply circuit for nine electronic copying machines, which distributes the instantaneous load and averages out the load on the power supply circuit, thereby downsizing the entire device.

Embodiment An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram of a device used in an electronic copying machine (not shown), and includes an AC-DC converter 1, such as a series regulator, that converts an AC input into a DC output, and an output side of the converter 1. Battery 2 connected to and stores energy
and each terminal 2. of the battery 2. ．． 2. ...and each load 3
, 4.5 regulators 3a, 4cL, and 5a to suppress wasteful discharge of the battery 2, and a control circuit 7 to control the switch element 6.

As shown in FIGS. 2 and 3, the battery 2 has a plurality of terminals 21m2 so that different voltages can be supplied depending on each load 3, 4.5. When the switch element 6 is turned on, power is supplied to each load 3°4.5 as follows.

Next, to explain the action, when AC input is applied, AC -
It is connected to the output side of the DC converter 1, and at the same time, a constant voltage output for charging is supplied to the battery 2, and the battery 2 is charged, an AC input is applied to the control circuit 7, and a signal informing the controller 7 is input. Ru.

The control circuit 7 checks the output voltage of the battery 2 at the same time as the signal is input, and if the output of the battery 2 exceeds the reference value, sends a control signal to the switch element 6 to turn it on. As a result, the electric power from the battery 2 is inputted to each regulator 3α, 4α, and 5i through the switch element 6t, and after being stabilized by each regulator, 3α, 4g, and 5α, it is supplied to each load 3, 4.5. , each load 3, 4.
5 is put into operation.

Effects of the Invention In this invention, as described in detail above, the battery is charged and power is supplied from the battery to each load, so that the instantaneous load can be distributed by using the battery. , the load on the power supply circuit can be averaged. This makes it possible to downsize the constant voltage power supply device and reduce costs accordingly. By using a battery having terminals each having a different output voltage, it is possible to simultaneously supply power to a plurality of loads, and the subsequent circuit that can charge the battery with a single charging circuit is also simplified.

Moreover, since the switch element is opened when the battery cannot be charged because no AC input is obtained, unnecessary discharge of the battery can be prevented.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a block diagram, FIG. 2 is a wiring diagram inside the battery, and FIG. 3 is an external view of the battery. 1 is an AC-DC converter, 2 is a pantry, 3°4.5 is a load, 3α, 4a, 5a are regulators, 6 is a switch element, and 7 is a control circuit. Figure 1 Figure 3

Claims (1)

[Claims] an AC-DC converter 1 that converts AC input into DC output;
A battery 2 connected to the output side of the converter 1 to store energy, and a regulator 3α, 4α, 5α supplying a stabilized voltage to each load 3, 4, 5, and the battery 2, A constant voltage power supply device for an electronic copying machine, etc., comprising a switch element 6 for suppressing wasteful discharge of a battery 2, and a control circuit 7 for controlling the switch element 6.