JPS5981291U - Self-excited switching power supply - Google Patents

Self-excited switching power supply

Info

Publication number
JPS5981291U
JPS5981291U JP17768082U JP17768082U JPS5981291U JP S5981291 U JPS5981291 U JP S5981291U JP 17768082 U JP17768082 U JP 17768082U JP 17768082 U JP17768082 U JP 17768082U JP S5981291 U JPS5981291 U JP S5981291U
Authority
JP
Japan
Prior art keywords
self
power supply
switching power
switching element
circuit
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
JP17768082U
Other languages
Japanese (ja)
Inventor
菊間　敏文
Original Assignee
ティーディーケイ株式会社
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 ティーディーケイ株式会社 filed Critical ティーディーケイ株式会社
Priority to JP17768082U priority Critical patent/JPS5981291U/en
Publication of JPS5981291U publication Critical patent/JPS5981291U/en
Pending legal-status Critical Current

Links

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図は従来の自励式スイッチング電源の電気回路接続
図、第２図ａ〜ｄは同じく各部の波形図、第３図は本考
案に係る自励式スイッチング電源の電気回路接続図であ
る。 Ｑｌ・・・スイッチング素子、Ｔ１・・・変圧器、Ｎｌ
。 Ｎ２・・・巻線、Ｎ３・・・帰還巻線、３・・・起動回
路、５・・・帰還回路、９・・・ダイオード回路。FIG. 1 is an electric circuit connection diagram of a conventional self-excited switching power supply, FIGS. 2a to 2d are waveform diagrams of various parts, and FIG. 3 is an electric circuit connection diagram of a self-excited switching power supply according to the present invention. Ql...Switching element, T1...Transformer, Nl
. N2... Winding, N3... Feedback winding, 3... Starting circuit, 5... Feedback circuit, 9... Diode circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 変圧器に接続されたスイッチング素子の出力側から入力
側に、前記変圧器に設けられた帰還巻線及びコンデンサ
を含む帰還回路を通ｌ−で正帰還をかけて自励発振動作
をさせ、その発振出力を前記変圧器を通して取出すよう
にすると共に、前記帰還回路と前記スイッチング素子と
の接続点に起動回路を接続し、更に前記スイッチング素
子の入力側に過電流保護回路を接続した自励式スイッチ
ング電源において、前記帰還回路に並列に、前記スイッ
チング素子の入力カット・イン電圧より低い電圧で導通
ずるダイオード回路を接続したことを特徴とする自励式
スイッチング電源。　　　　　　゛Positive feedback is applied at l- from the output side of the switching element connected to the transformer to the input side through a feedback circuit including a feedback winding and a capacitor provided in the transformer to cause self-excited oscillation. A self-excited switching power supply in which an oscillation output is taken out through the transformer, a starting circuit is connected to a connection point between the feedback circuit and the switching element, and an overcurrent protection circuit is connected to the input side of the switching element. A self-excited switching power supply characterized in that a diode circuit conductive at a voltage lower than an input cut-in voltage of the switching element is connected in parallel to the feedback circuit.゛
JP17768082U 1982-11-24 1982-11-24 Self-excited switching power supply Pending JPS5981291U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17768082U JPS5981291U (en) 1982-11-24 1982-11-24 Self-excited switching power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17768082U JPS5981291U (en) 1982-11-24 1982-11-24 Self-excited switching power supply

Publications (1)

Publication Number Publication Date
JPS5981291U true JPS5981291U (en) 1984-06-01

Family

ID=30385958

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17768082U Pending JPS5981291U (en) 1982-11-24 1982-11-24 Self-excited switching power supply

Country Status (1)

Country Link
JP (1) JPS5981291U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0446559A (en) * 1990-06-12 1992-02-17 Matsushita Electric Ind Co Ltd Control circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0446559A (en) * 1990-06-12 1992-02-17 Matsushita Electric Ind Co Ltd Control circuit

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