JPS62135529U - - Google Patents
Info
- Publication number
- JPS62135529U JPS62135529U JP2163386U JP2163386U JPS62135529U JP S62135529 U JPS62135529 U JP S62135529U JP 2163386 U JP2163386 U JP 2163386U JP 2163386 U JP2163386 U JP 2163386U JP S62135529 U JPS62135529 U JP S62135529U
- Authority
- JP
- Japan
- Prior art keywords
- power transistor
- base
- turn
- surge voltage
- emitter
- 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
- 230000001629 suppression Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Emergency Protection Circuit Devices (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図はパワートランジスタのターンオフ時サージ電
圧を説明するための各部波形図、第３図は従来の
パワートランジスタとドライブ回路図である。
２，３…トランジスタ、４…オンドライブ電源
、７…オフドライブ電源、６，１１…パワートラ
ンジスタ、２Ａ，３Ａ…スイツチ、ＴＲ１，ＴＲ
２，ＴＲ３…トランジスタ、Ｄ１，Ｄ２，Ｄ３…
ダイオード、ＺＤ…ツエナーダイオード。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a waveform diagram of various parts for explaining the surge voltage at turn-off of a power transistor, and FIG. 3 is a diagram of a conventional power transistor and a drive circuit. 2, 3... Transistor, 4... On-drive power supply, 7... Off-drive power supply, 6, 11... Power transistor, 2A, 3A... Switch, TR 1 , TR
2 , TR 3 ...Transistor, D1 , D2 , D3 ...
Diode, ZD...Zener diode.
Claims (1)
ワートランジスタにおいて、パワートランジスタ
のエミツタとベース間に接続されターンオフ時に
該ベースに発生するサージ電圧を該パワートラン
ジスタの逆バイアス耐量以下に制限する電圧クリ
ツプ回路を備えたことを特徴とするパワートラン
ジスタのサージ電圧抑制回路。 A power transistor to which an off-base current is supplied at turn-off is equipped with a voltage clip circuit connected between the emitter and base of the power transistor to limit the surge voltage generated at the base at turn-off to below the reverse bias withstand capability of the power transistor. A power transistor surge voltage suppression circuit characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2163386U JPS62135529U (en) | 1986-02-18 | 1986-02-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2163386U JPS62135529U (en) | 1986-02-18 | 1986-02-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62135529U true JPS62135529U (en) | 1987-08-26 |
Family
ID=30818251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2163386U Pending JPS62135529U (en) | 1986-02-18 | 1986-02-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62135529U (en) |
-
1986
- 1986-02-18 JP JP2163386U patent/JPS62135529U/ja active Pending