JPH0443352U

JPH0443352U -

Info

Publication number: JPH0443352U
Application number: JP3038990U
Authority: JP
Priority date: 1990-03-23
Filing date: 1990-03-23
Publication date: 1992-04-13

Description

[Brief explanation of the drawing]

第１図は第１の考案の一実施例を示す構成ブロ
ツク図、第２図は第２の考案の一実施例を説明す
る構成ブロツク図、第３図は第２図の装置の動作
を説明する波形図である。第４図は従来の多出力
スイツチング電源装置の構成ブロツク図である。１０……整流回路、１２……一次側コンデンサ
、１４，１６，２０……二次側回路、３０……充
電回路、４０……切替回路、５０……バツクアツ
プ制御回路、Ｂ……バツテリ、Ｑ……スイツチン
グ素子、Ｔ……トランス。 Fig. 1 is a block diagram showing an embodiment of the first invention, Fig. 2 is a block diagram explaining an embodiment of the second invention, and Fig. 3 explains the operation of the device shown in Fig. 2. FIG. FIG. 4 is a block diagram of a conventional multi-output switching power supply device. 10... Rectifier circuit, 12... Primary side capacitor, 14, 16, 20... Secondary side circuit, 30... Charging circuit, 40... Switching circuit, 50... Backup control circuit, B... Battery, Q ...Switching element, T...Transformer.

Claims

[Claims for Utility Model Registration] (1) A rectifier circuit that rectifies alternating current, a primary capacitor that smoothes the current rectified by this rectifier circuit, and a primary capacitor to which the DC current stored in this capacitor is applied. A transformer having a winding, a switching element that switches a direct current applied to the primary winding, and a secondary circuit that rectifies and smoothes a switching signal induced in the secondary winding of the transformer and outputs the resultant signal. A switching power supply comprising: a battery that supplies DC current to the primary winding; a charging circuit that receives the DC current stored in the primary capacitor and charges the battery; and a power outage in the AC current supply source. An uninterruptible power supply characterized by comprising, at times, a switching means for switching from the battery to the backup. (2) A rectifier circuit that rectifies alternating current, a primary capacitor that smoothes the current rectified by this rectifier circuit, and a first primary winding to which direct current stored in this capacitor is applied. 1 transformer and
A first switching element that switches the direct current applied to the primary winding, and a first secondary circuit that rectifies and smoothes the switching signal induced in the secondary winding of the first transformer and outputs the resultant signal. and a second transformer having a second primary winding to which the DC current stored in the capacitor is applied.
A second switching element that switches the direct current applied to the primary winding, and a second secondary circuit that rectifies and smoothes the switching signal induced in the secondary winding of the second transformer and outputs the resultant signal. and,
A multi-output switching power supply having: a battery that supplies direct current to each of the primary windings; a charging circuit that receives direct current stored in the primary capacitor and charges the battery; and a charging circuit that charges the battery. a switching means for switching to backup from the battery when the power source is out of power; and a switching means for switching to backup from the battery in accordance with prespecified contents when the battery is backing up. An uninterruptible power supply system comprising: a backup control circuit that supplies a signal instructing to stop or continue;