JPS6447585U - - Google Patents

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Publication number
JPS6447585U
JPS6447585U JP14145287U JP14145287U JPS6447585U JP S6447585 U JPS6447585 U JP S6447585U JP 14145287 U JP14145287 U JP 14145287U JP 14145287 U JP14145287 U JP 14145287U JP S6447585 U JPS6447585 U JP S6447585U
Authority
JP
Japan
Prior art keywords
power supply
switching power
transformer
current detection
switching
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
JP14145287U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP14145287U priority Critical patent/JPS6447585U/ja
Publication of JPS6447585U publication Critical patent/JPS6447585U/ja
Pending legal-status Critical Current

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Description

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

第１図は本考案に係るスイツチング電源の電気
回路図、第２図ａは本考案に係るスイツチング電
源の過電流保護動作を説明するためのスイツチン
グ素子の電流波形図、第２図ｂは同じくドライブ
電流波形図、第３図及び第４図は従来のスイツチ
ング電源の回路図である。 １……直流電源、２……トランス、３……スイ
ツチング素子、４……制御回路、１１……電流検
出素子、１２……トリガ制御素子。 Fig. 1 is an electric circuit diagram of the switching power supply according to the present invention, Fig. 2a is a current waveform diagram of the switching element to explain the overcurrent protection operation of the switching power supply according to the present invention, and Fig. 2b is a diagram of the current waveform of the switching element according to the present invention. The current waveform diagrams in FIGS. 3 and 4 are circuit diagrams of a conventional switching power supply. DESCRIPTION OF SYMBOLS 1... DC power supply, 2... Transformer, 3... Switching element, 4... Control circuit, 11... Current detection element, 12... Trigger control element.

Claims (1)

【実用新案登録請求の範囲】 (1) 直流電源に接続されたトランスの一次側に
直列に入るスイツチング素子を、前記トランスの
二次側に設けられた制御回路から与えられる信号
によつてパルス幅制御し、前記トランスの二次側
に発生する電圧を整流平滑して安定化された直流
電圧を得るようにしたスイツチング電源において
、前記スイツチング素子の主回路に直列に入る電
流検出素子と、前記スイツチング素子の制御電極
に接続され前記電流検出素子から与えられる信号
で制御されるトリガ制御素子とを備える過電流保
護回路を有することを特徴とするスイツチング電
源。 (2) 前記電流検出素子は抵抗であることを特徴
とする実用新案登録請求の範囲第１項に記載のス
イツチング電源。 (3) 前記電流検出素子はカレントトランスであ
ることを特徴とする実用新案登録請求の範囲第１
項に記載のスイツチング電源。 (4) 前記トリガ素子は、三端子制御素子である
ことを特徴とする実用新案登録請求の範囲第１項
、第２項または第３項に記載のスイツチング電源
。[Claims for Utility Model Registration] (1) A switching element connected in series to the primary side of a transformer connected to a DC power source is controlled to control the pulse width by a signal given from a control circuit provided on the secondary side of the transformer. The switching power supply is configured to rectify and smooth the voltage generated on the secondary side of the transformer to obtain a stabilized DC voltage, the switching power supply comprising: a current detection element connected in series with the main circuit of the switching element; A switching power supply comprising an overcurrent protection circuit including a trigger control element connected to a control electrode of the element and controlled by a signal given from the current detection element. (2) The switching power supply according to claim 1, wherein the current detection element is a resistor. (3) Utility model registration claim 1, characterized in that the current detection element is a current transformer.
Switching power supply as described in section. (4) The switching power supply according to claim 1, 2, or 3, wherein the trigger element is a three-terminal control element.
JP14145287U 1987-09-16 1987-09-16 Pending JPS6447585U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14145287U JPS6447585U (en) 1987-09-16 1987-09-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14145287U JPS6447585U (en) 1987-09-16 1987-09-16

Publications (1)

Publication Number Publication Date
JPS6447585U true JPS6447585U (en) 1989-03-23

Family

ID=31406523

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14145287U Pending JPS6447585U (en) 1987-09-16 1987-09-16

Country Status (1)

Country Link
JP (1) JPS6447585U (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5153448A (en) * 1974-11-06 1976-05-11 Sanritsu Electric
JPS5553183A (en) * 1978-10-11 1980-04-18 Fanuc Ltd Protecting overcurrent of power-switching element in switching power supply
JPS58172423A (en) * 1982-04-02 1983-10-11 Toyota Motor Corp Intake system in internal combustion engine
JPS6066666A (en) * 1983-09-19 1985-04-16 Fujitsu Ltd Overcurrent protecting circuit
JPS6128893A (en) * 1984-07-18 1986-02-08 株式会社東芝 Nuclear power plant
JPS61288773A (en) * 1985-06-12 1986-12-18 Fujitsu Ltd Switching regulator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5153448A (en) * 1974-11-06 1976-05-11 Sanritsu Electric
JPS5553183A (en) * 1978-10-11 1980-04-18 Fanuc Ltd Protecting overcurrent of power-switching element in switching power supply
JPS58172423A (en) * 1982-04-02 1983-10-11 Toyota Motor Corp Intake system in internal combustion engine
JPS6066666A (en) * 1983-09-19 1985-04-16 Fujitsu Ltd Overcurrent protecting circuit
JPS6128893A (en) * 1984-07-18 1986-02-08 株式会社東芝 Nuclear power plant
JPS61288773A (en) * 1985-06-12 1986-12-18 Fujitsu Ltd Switching regulator

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