JPH02138322U

JPH02138322U -

Info

Publication number: JPH02138322U
Application number: JP4674489U
Authority: JP
Priority date: 1989-04-20
Filing date: 1989-04-20
Publication date: 1990-11-19

Description

[Brief explanation of drawings]

第１図は本考案の機能ブロツク図、第２図は一
実施例の無停電電源供給装置の回路ブロツク図、
第３図は一実施例の動作を説明するタイムチヤー
ト、第４図は第２図に示す無停電電源供給装置の
変形回路を示すブロツク図、第５図は従来の無停
電電源供給装置の回路ブロツク図、第６図は従来
の無停電電源供給装置の動作を説明するタイムチ
ヤートである。１……電圧降下検出手段、２……非常用電源、
３……切換手段、４……切換制御手段。 Fig. 1 is a functional block diagram of the present invention, Fig. 2 is a circuit block diagram of an uninterruptible power supply device according to an embodiment,
Fig. 3 is a time chart explaining the operation of one embodiment, Fig. 4 is a block diagram showing a modified circuit of the uninterruptible power supply shown in Fig. 2, and Fig. 5 is a circuit of a conventional uninterruptible power supply. The block diagram and FIG. 6 are time charts explaining the operation of the conventional uninterruptible power supply device. 1...Voltage drop detection means, 2...Emergency power supply,
3...Switching means, 4...Switching control means.

Claims

[Scope of utility model registration request]

A voltage drop detection means for detecting a voltage drop of a commercial power supply; an emergency power supply; a switching means for inputting the commercial power supply and the emergency power supply and outputting one of the two power supplies to an external device; When a voltage drop below a predetermined level of the commercial power source is detected, the switching means is instructed to switch the output power to the external device from the commercial power source to the emergency power source, and the external device is supplying the emergency power source. an uninterruptible power supply device comprising: switching control means for instructing the switching means to release the emergency power supply to the external device when a certain process is completed;