JPH0171987U - - Google Patents

Info

Publication number
JPH0171987U
JPH0171987U JP1987166770U JP16677087U JPH0171987U JP H0171987 U JPH0171987 U JP H0171987U JP 1987166770 U JP1987166770 U JP 1987166770U JP 16677087 U JP16677087 U JP 16677087U JP H0171987 U JPH0171987 U JP H0171987U
Authority
JP
Japan
Prior art keywords
voltage
transistor
voltage divider
emitter
divides
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
JP1987166770U
Other languages
English (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 JP1987166770U priority Critical patent/JPH0171987U/ja
Publication of JPH0171987U publication Critical patent/JPH0171987U/ja
Pending legal-status Critical Current

Links

Landscapes

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

Description

【図面の簡単な説明】
第1図は本考案の実施例を示す回路図、第2図
は従来例の回路図である。 1……直流電源、2……主変圧器、3……トラ
ンジスタ、11,12……抵抗器、13……シヤ
ントレギユレータ。

Claims (1)

    【実用新案登録請求の範囲】
  1. スイツチング電源のスイツチング用トランジス
    タを過電圧から保護する回路において、前記トラ
    ンジスタのコレクタ・エミツタ間電圧を分圧する
    分圧器と、該分圧器の分圧電圧が所定値以上にな
    つたとき前記トランジスタのベースをエミツタへ
    接続する手段とを備えたことを特徴とする過電圧
    保護回路。
JP1987166770U 1987-11-02 1987-11-02 Pending JPH0171987U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987166770U JPH0171987U (ja) 1987-11-02 1987-11-02

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987166770U JPH0171987U (ja) 1987-11-02 1987-11-02

Publications (1)

Publication Number Publication Date
JPH0171987U true JPH0171987U (ja) 1989-05-15

Family

ID=31454450

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987166770U Pending JPH0171987U (ja) 1987-11-02 1987-11-02

Country Status (1)

Country Link
JP (1) JPH0171987U (ja)

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