JPS62202023U - - Google Patents

Info

Publication number
JPS62202023U
JPS62202023U JP8974286U JP8974286U JPS62202023U JP S62202023 U JPS62202023 U JP S62202023U JP 8974286 U JP8974286 U JP 8974286U JP 8974286 U JP8974286 U JP 8974286U JP S62202023 U JPS62202023 U JP S62202023U
Authority
JP
Japan
Prior art keywords
converter
thyristor
control transistor
base
resistor
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.)
Granted
Application number
JP8974286U
Other languages
Japanese (ja)
Other versions
JPH0739349Y2 (en
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 JP1986089742U priority Critical patent/JPH0739349Y2/en
Publication of JPS62202023U publication Critical patent/JPS62202023U/ja
Application granted granted Critical
Publication of JPH0739349Y2 publication Critical patent/JPH0739349Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Protection Of Static Devices (AREA)
  • Dc-Dc Converters (AREA)

Description

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

第１図は本考案にかかる過電圧保護回路を組み
込んだ自励型コンバータの一実施例を示す回路図
、第２図は従来技術の一例を示す回路である。 １０，２０……過電圧保護回路、Ｔ……トラン
ス、Ｎ１……一次巻線、Ｎ２……二次巻線、Ｎ３
……ベース巻線、Ｑ１……スイツチングトランジ
スタ、Ｑ２，Ｑ３……制御トランジスタ、Ｔｈ１
，Ｔｈ２……サイリスタ、ＺＤ１，ＺＤ２……ツ
エナーダイオード、Ｒ３，Ｒ５……抵抗、Ｃ２…
…コンデンサ。 FIG. 1 is a circuit diagram showing an embodiment of a self-excited converter incorporating an overvoltage protection circuit according to the present invention, and FIG. 2 is a circuit diagram showing an example of the prior art. 10, 20...Overvoltage protection circuit, T...Transformer, N1 ...Primary winding, N2 ...Secondary winding, N3
 ... Base winding, Q 1 ... Switching transistor, Q 2 , Q 3 ... Control transistor, Th 1
 , Th 2 ... Thyristor, ZD 1 , ZD 2 ... Zener diode, R 3 , R 5 ... Resistor, C 2 ...
...capacitor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] コンバータトランスのベース巻線に対して並列
に抵抗とコンデンサとの直列回路を設け、該コン
デンサの端子電圧でスイツチングトランジスタの
ベース―エミツタ間に接続した制御トランジスタ
を制御するコンバータ回路において、コンバータ
の一方の一次側入力端と制御トランジスタのベー
スとの間に抵抗とサイリスタの直列回路を設け、
該サイリスタのゲートと他方の一次側入力端との
間に過電圧検出用のツエナーダイオードを設けて
、過電圧発生時に導通するサイリスタによつて制
御トランジスタを導通させる自励型コンバータの
過電圧保護回路。 In a converter circuit in which a series circuit of a resistor and a capacitor is provided in parallel to the base winding of a converter transformer, and the terminal voltage of the capacitor controls a control transistor connected between the base and emitter of a switching transistor, one side of the converter A series circuit of a resistor and a thyristor is provided between the primary input terminal and the base of the control transistor.
An overvoltage protection circuit for a self-excited converter, in which a Zener diode for overvoltage detection is provided between the gate of the thyristor and the other primary input terminal, and a control transistor is rendered conductive by the thyristor that conducts when an overvoltage occurs.
JP1986089742U 1986-06-12 1986-06-12 Overvoltage protection circuit for self-excited converter Expired - Lifetime JPH0739349Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1986089742U JPH0739349Y2 (en) 1986-06-12 1986-06-12 Overvoltage protection circuit for self-excited converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1986089742U JPH0739349Y2 (en) 1986-06-12 1986-06-12 Overvoltage protection circuit for self-excited converter

Publications (2)

Publication Number Publication Date
JPS62202023U true JPS62202023U (en) 1987-12-23
JPH0739349Y2 JPH0739349Y2 (en) 1995-09-06

Family

ID=30948995

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1986089742U Expired - Lifetime JPH0739349Y2 (en) 1986-06-12 1986-06-12 Overvoltage protection circuit for self-excited converter

Country Status (1)

Country Link
JP (1) JPH0739349Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03178560A (en) * 1989-12-04 1991-08-02 Murata Mfg Co Ltd Ringing choke converter

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58186743U (en) * 1982-06-04 1983-12-12 富士電気化学株式会社 DC-DC converter overvoltage protection circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58186743U (en) * 1982-06-04 1983-12-12 富士電気化学株式会社 DC-DC converter overvoltage protection circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03178560A (en) * 1989-12-04 1991-08-02 Murata Mfg Co Ltd Ringing choke converter

Also Published As

Publication number Publication date
JPH0739349Y2 (en) 1995-09-06

Similar Documents

Publication Publication Date Title
JPS62202023U (en)
JPS62104589U (en)
JPH01131289U (en)
JPS6198392U (en)
JPS62202024U (en)
JPS63176377U (en)
JPH0417640U (en)
JPS62111784U (en)
JPS63111798U (en)
JPH0480286U (en)
JPS6434890U (en)
JPH042940U (en)
JPH01159546U (en)
JPS6351586U (en)
JPS6257590U (en)
JPH0394086U (en)
JPH0370022U (en)
JPS593789U (en) Ringing choke converter
JPS5895195U (en) Self-excited voltage converter
JPS63194583U (en)
JPS58186743U (en) DC-DC converter overvoltage protection circuit
JPS62107589U (en)
JPH0334683U (en)
JPS63179778U (en)
JPH02139485U (en)