JPS58114211A - Electric power supply device - Google Patents

Electric power supply device

Info

Publication number
JPS58114211A
JPS58114211A JP21086381A JP21086381A JPS58114211A JP S58114211 A JPS58114211 A JP S58114211A JP 21086381 A JP21086381 A JP 21086381A JP 21086381 A JP21086381 A JP 21086381A JP S58114211 A JPS58114211 A JP S58114211A
Authority
JP
Japan
Prior art keywords
power supply
transistor
circuit
collector
electric power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP21086381A
Other languages
Japanese (ja)
Inventor
Shinichi Otsu
信一 大津
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP21086381A priority Critical patent/JPS58114211A/en
Publication of JPS58114211A publication Critical patent/JPS58114211A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
    • G05F1/565—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
    • G05F1/569—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection
    • G05F1/573—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection with overcurrent detector

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Protection Of Static Devices (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)

Abstract

PURPOSE:To exactly prevent breakdown of a circuit, by disconnecting an electric power supply when base voltage of a transistor of a dropper type stabilizing circuit which has connected the emitted and the collector of the transistor to a line has dropped from a prescribed value. CONSTITUTION:The secondary side of a transformer tr1 is rectified by a bridge type rectifier DB, and stabilized supply voltage is supplied to load terminals L1, L2 through a dropper type stabilizing circuit SC which has connected the collector and the emitter of a transistor TRQ1 to a line. When the collector and the emitter of the TRQ1 are short-circuited, output voltage rises suddenly, and base voltage of the TRQ1 drops to about ''0''V. This voltage drop is detected by a controlling circuit CNT, and a switch RL1 is intercepted. In this way, the electric power supply can be intercepted exactly by a simple circuit.

Description

【発明の詳細な説明】 （１）発明の技術分野 本発明は電源装置に関する。[Detailed description of the invention] (1) Technical field of the invention The present invention relates to a power supply device.

（２）便来技術と問題点 従来の電源装置を嬉１図に示す。(2) Conventional technology and problems A conventional power supply device is shown in Figure 1.

スイッチＲＬＩを有する一次側とダイオードブリッジＤ
Ｂ、）ランジスタＱ１を有するドロ、バ朧安定化回路８
０等を有する二次側から成る９電源回路において、トラ
ンジスタＱ１が破壊され、コレクターエミッタ関がシ習
−卜すると負荷の保護の丸めにツェナーダイオードＺＤ
で電圧を検出してトランジスタＱ２をオンさせ、−！＃
−イリスタＴＨをオンさせて出力を強制的に落し、リレ
ーＲＬ２でこれを検出して制御回路ＯＮＴによりスイッ
チＲＬＩを動作させてＡＣ入力を切断していた。Primary side with switch RLI and diode bridge D
B.) Doro, vague stabilization circuit 8 with transistor Q1
In a 9-power supply circuit consisting of a secondary side having a
Detects the voltage at and turns on transistor Q2, -! #
- The output was forcibly dropped by turning on the iris register TH, this was detected by the relay RL2, and the control circuit ONT operated the switch RLI to cut off the AC input.

しかしながら、従来の電源装置ではツェナーダイオード
ＺＤやサイリスタＴＨ等の過電圧防止回路が必要で構成
が複雑になる他、ツェナーダイオードの特性のばらつき
によりこれが動作しない欠点があう九。However, the conventional power supply device requires an overvoltage prevention circuit such as a Zener diode ZD or a thyristor TH, which complicates the configuration, and also has the disadvantage that it does not work due to variations in the characteristics of the Zener diode.

（→　発明の目的 本発明の目的は、構成が簡単で確実にＡＯ人力を遮断可
能な電源装置を提供することにある。(→ Purpose of the Invention The purpose of the present invention is to provide a power supply device that has a simple configuration and can reliably shut off AO human power.

（４）　　発明の構成 本発明の特徴は、線路にコレクタおよびエミッタが接続
されたトランジスタを有するドロッパ盤安定化回路を有
する電源装置において、該トランジスタのベース電位が
所定値より低下し九時に入力を遮断するようにしたこを
゛を特徴とする０（→　発明の実施例 □　　第２図は本発明の一実施例を示す図である。(4) Structure of the Invention A feature of the present invention is that in a power supply device having a dropper board stabilizing circuit having a transistor whose collector and emitter are connected to a line, when the base potential of the transistor drops below a predetermined value and the input is turned off at 9 o'clock, 0 (→ Embodiment of the Invention □ FIG. 2 is a diagram showing an embodiment of the present invention.

ドロッパ型安定化回路ＢＯにおいてトランジスタＱｌの
コレクターエミッタ間のり曹−トによシ出力電圧が急激
に上昇すると、トランジスタＱ１のペース電位は急激に
Ｏｖ付近に低下することを利用している。The dropper type stabilizing circuit BO utilizes the fact that when the output voltage suddenly increases due to the collector-emitter gap of the transistor Ql, the pace potential of the transistor Q1 suddenly decreases to around Ov.

ベース電位が低下すると制御回＊ＯＮＴでこれを検出し
てスイッチＲＬＩｔオフとしてＡＣ入力を切断する。こ
れにより従来のツェナーダイオードやサイリスタ数が不
要となるので構成が簡単になると共に４ｓ夷にＡＯ人力
を切断することができる。When the base potential falls, the control circuit *ONT detects this and turns off the switch RLIt to cut off the AC input. This eliminates the need for conventional Zener diodes and thyristors, which simplifies the configuration and allows the AO manual power to be disconnected in 4 seconds.

同、本実施例ではトランスの二次側の巻線をｔｒＩ　ｒ
　ｔｒｙに分割し、電圧ｖＤｔトランジスタＱ１のコレ
クターエミッタ間がリニアの範囲で動作する限度いっば
いにＦげることによりＱｌでの電力の損失を減少してい
る。Similarly, in this embodiment, the secondary winding of the transformer is trI r
The power loss in Ql is reduced by dividing the voltage vDt into three transistors and increasing F as long as the voltage vDt between the collector and emitter of the transistor Q1 operates within a linear range.

（６）　　発明の効果 本発明によれば、構成が簡単になると共に過電圧を確実
に防止することができる。(6) Effects of the Invention According to the present invention, the configuration becomes simple and overvoltage can be reliably prevented.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来の電源装置を示す図、第２図は本発明の一
実施例を示す図である。 ８０ニトロツバ型安定化回路、Ｑｌ：トランジスタ、Ｏ
ＮＴ　：制御回路、Ｒ１，ｌ：スイッチ。FIG. 1 is a diagram showing a conventional power supply device, and FIG. 2 is a diagram showing an embodiment of the present invention. 80 Nitrotsuba type stabilization circuit, Ql: transistor, O
NT: control circuit, R1, l: switch.

Claims (1)

【特許請求の範囲】[Claims] 線路にコレクタおよびエミッタが接続され九トランジス
タを有するドロッパ型安定化回路を有する゛−電源装置
おいて、該トランジスタのペース電位が所定値よシ低下
した時に入力を遮断するようにし九ことを特徴とする電
源装置。A power supply device having a dropper type stabilizing circuit having a collector and an emitter connected to a line and having nine transistors, characterized in that the input is cut off when the pace potential of the transistor falls below a predetermined value. power supply.
JP21086381A 1981-12-28 1981-12-28 Electric power supply device Pending JPS58114211A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21086381A JPS58114211A (en) 1981-12-28 1981-12-28 Electric power supply device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21086381A JPS58114211A (en) 1981-12-28 1981-12-28 Electric power supply device

Publications (1)

Publication Number Publication Date
JPS58114211A true JPS58114211A (en) 1983-07-07

Family

ID=16596342

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21086381A Pending JPS58114211A (en) 1981-12-28 1981-12-28 Electric power supply device

Country Status (1)

Country Link
JP (1) JPS58114211A (en)

Similar Documents

Publication Publication Date Title
GB1013272A (en) Circuit control means
US4258309A (en) Switching type power supply circuit
FI962920A0 (en) Lockout converter with a regulated output voltage
JPS58114211A (en) Electric power supply device
JPS57174715A (en) Switching power supply
GB1468979A (en) Emergency electricity control device
GB1123076A (en) Improvements in or relating to power supply regulation
GB1152903A (en) Improvements in or relating to the Prevention or Reduction of Arcing at a.c. Switch Contacts
KR900005090Y1 (en) Over current protective circuit
JP2558621B2 (en) Power supply circuit
KR920002448Y1 (en) Stand-by morning circuit
SU830363A1 (en) Low voltage stabilizer
KR960030524A (en) Power compensation circuit for compensating AC input power fluctuation
JPS57143622A (en) Switching regulator
SU1168917A1 (en) A.c.voltage stabilizer
KR870000653Y1 (en) Power circuit
SU728197A2 (en) Device for protecting magnetotransistorized converter from overvoltage
KR840001565Y1 (en) Power circuit
KR950003490Y1 (en) Power circuit
JPS6062867A (en) Power source circuit
KR900004475Y1 (en) Short circuit protecting circuit for over current and over voltage
KR910002048Y1 (en) Power circuit
KR890006335Y1 (en) Stand-by acting circuit by horizontal osillation broken
JPH0732600B2 (en) Switching power supply circuit
GB1041294A (en) Improvements in or relating to voltage stabilisers