JPS6028731A - Power interruption protecting power source - 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 Technical Field The present invention provides a power outage protection power source 1 (4) that can continue to energize loads such as blood control 1 devices even in the event of a power outage.

Background technology and tigei! In the memory dimmer device for stages such as J-ba,
It remembers the brightness of the lighting in the most trivial scenes used in plays and the like. Due to renovation work at the theater, power outages may occur for about two to six months, for example. During such a period, it is desirable that the stored contents of the IC not be erased.

Conventionally, secondary batteries such as nickel-cadmium batteries have been used for power outage and protection purposes. Such a secondary battery is charged under normal conditions, and therefore can be used for a long period of time without having to be replaced. The problem with such secondary batteries is that the period during which the load can be energized during a power outage is limited. Therefore, if the power outage continues for a long period of time as mentioned above, secondary power supply? 1
It is not possible to energize the load by KVC.

Purpose The purpose of the present invention is to provide a power outage that allows a load to continue to be energized even during a power outage for a long period of time.

The purpose is to provide a protective power source.

Embodiment FIG. 1 is an electrical circuit diagram of an embodiment of the present invention. Power from a power source 1, which is used during normal times when a power outage may occur, energizes a load 3 via a line 2. This load 3
is a control circuit that may be deenergized when the power supply 1 is out of power.

Another load 4 such as a control circuit that must continue to be energized during a power outage of the power source 1 is connected from the line 2 to the load 4.
The IC is powered through a diode 5 that conducts power in one direction. The power from the lines 27) passes through a current limiting resistor 7 from a diode 6 and charges a secondary battery 8 such as a nickel cadmium battery. The output from the secondary battery 8 energizes the load 4 via a diode 9 and a line 10.

Power can be supplied to the line 10 from a primary battery 11 via a diode 12 .

During normal times when the normal power source 1 is not experiencing a power outage, the loads 8 and 4 are energized by the power 1c from the normal power source 1, and the secondary battery 8 is powered by the power from the normal power source 1.
is charged. At this time, the ζi force from the primary power reservoir 11 is only supplied to the load 4V.

Referring to FIG. 2, assume that the normal power supply 1 experiences a power outage at time 0. The load 3 is deenergized due to a power outage of the normal power source 1. The output voltage of the secondary battery 8 is indicated by reference symbol e2.
As shown in , it is relatively high, and this causes
Power 1 from the diode 9 is supplied to the load 4Vc through the line 10, and the load 4 is backed up, so to speak. As the secondary battery 8 is used, its output voltage increases and decreases, and when the output voltage e1 of the primary battery 11 reaches 2 at the time [1 to 2], the output voltage e1 of the primary battery 11 reaches 2 at the time [1 to 3]. Load 4 is energized. The voltage on line 10 required for normal operation of negative if 4 is given by reference V
It is indicated by l.

In the above-mentioned embodiment, since the primary battery 11 is provided, by using only the secondary battery 8, the load 4 can be fully operated only until time t2 when the output voltage of the secondary battery 8 drops to VIK. However, according to the present invention, time t2
At the subsequent time [3-F], it becomes possible to operate the load 4 for a long period of time.

When the normal power source 1 is restored before time t3, the secondary battery 8 is charged again and can be reused.

The load 4 may be, for example, a memory realized by a complementary metal oxide semiconductor integrated circuit, etc.; such a circuit consumes only a small current and has a primary current of
11 The K stagger period can be extended for a long period of time.

First, the load 4 is energized by the secondary battery 8, and then the load 4 is powered up by the secondary battery 8.
Instead of the diode 9.12 used for energizing by the primary t-pool 11, switching means with other configurations may be used.

Effects As described above, according to the present invention, when the power supply used in normal times does not have a power outage, the secondary battery of the l/c is charged, and when the normal power supply has a power outage (then, first, the secondary battery is charged). Since the load is energized by the electric power of the primary battery, and then the load is continuously energized by the primary battery, it is possible to continue operating the load for a long period of time.

[Brief explanation of the drawing]

FIG. 1 is an electric circuit diagram of an embodiment of the present invention, and FIG. 2 is a waveform diagram for explaining its operation. 1... Normal power supply, 3.4... Load, 5, 6, 9.1
2...Diode, 8...Secondary battery, 11...Yumitsuichi Kazuya, Patent attorney Kei Nishi, Part 1

Claims (1)

[Claims] A power source used in normal times that may cause a power outage, a diode that guides power from the normal power source to a load in one direction, and a diode that is charged by the normal power source and energizes the load. A secondary battery, a primary battery, and the power from the secondary battery is led to the load during a power outage of the normal power supply, and when the output of the secondary battery decreases below a predetermined value, the power from the primary battery is supplied to the load. and switching means for switching and guiding the power to the load.