JPS59138391U - protection device - Google Patents
protection deviceInfo
- Publication number
- JPS59138391U JPS59138391U JP3075183U JP3075183U JPS59138391U JP S59138391 U JPS59138391 U JP S59138391U JP 3075183 U JP3075183 U JP 3075183U JP 3075183 U JP3075183 U JP 3075183U JP S59138391 U JPS59138391 U JP S59138391U
- Authority
- JP
- Japan
- Prior art keywords
- base
- power transistor
- drive circuit
- protection device
- base drive
- 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
Links
Landscapes
- Protection Of Static Devices (AREA)
- Power Conversion In General (AREA)
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
第１図はインバータの概略構成を示す回路図、第２図は
従来のベースドライブ回路の一例を示す回路図、第３図
は本考案の一実施例を示す回路図である。
２ａ・・・パワートランジスタ、２１・・・限流抵抗、
２２・・・ヒユーズ、２４・・・サイリスク、２５・・
・ツエ −ナーダイオード、２６・・・ダイオ
ード。FIG. 1 is a circuit diagram showing a schematic configuration of an inverter, FIG. 2 is a circuit diagram showing an example of a conventional base drive circuit, and FIG. 3 is a circuit diagram showing an embodiment of the present invention. 2a... power transistor, 21... current limiting resistor,
22... Fuse, 24... Sairisk, 25...
・Zener diode, 26... diode.
Claims (1)
ライブ回路において、このベースドライブ−回路と前記
パワートランジスタのベースとを結ぶ電路に介挿された
限流抵抗およびヒユーズから成る直列回路と、この直列
回路および前記ベースドライブ回路の共通接続点と前記
パワートランジスタのエミッタ端子との間に接続され、
前記パワートランジスタのベース電圧が所定値を超えた
ときに点弧されるサイリスタとを備えたことを特徴とす
る保護装置。A base drive circuit that supplies a base current to a power transistor includes a series circuit consisting of a current limiting resistor and a fuse inserted in an electric path connecting this base drive circuit and the base of the power transistor; connected between a common connection point of the base drive circuit and an emitter terminal of the power transistor,
A protection device comprising: a thyristor that is fired when the base voltage of the power transistor exceeds a predetermined value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3075183U JPS59138391U (en) | 1983-03-02 | 1983-03-02 | protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3075183U JPS59138391U (en) | 1983-03-02 | 1983-03-02 | protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59138391U true JPS59138391U (en) | 1984-09-14 |
Family
ID=30161621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3075183U Pending JPS59138391U (en) | 1983-03-02 | 1983-03-02 | protection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59138391U (en) |
-
1983
- 1983-03-02 JP JP3075183U patent/JPS59138391U/en active Pending
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