JPS5457623A - Transistor chopper device - Google Patents
Transistor chopper deviceInfo
- Publication number
- JPS5457623A JPS5457623A JP12348577A JP12348577A JPS5457623A JP S5457623 A JPS5457623 A JP S5457623A JP 12348577 A JP12348577 A JP 12348577A JP 12348577 A JP12348577 A JP 12348577A JP S5457623 A JPS5457623 A JP S5457623A
- Authority
- JP
- Japan
- Prior art keywords
- turn
- base
- time
- drive circuit
- action
- 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
- Dc-Dc Converters (AREA)
Abstract
PURPOSE: To promote a reduction of loss in the base drive circuit at the time of turn-on and turn-off operation, by means of providing a driving transistor separately for use of turn-on and turn-off operaion.
CONSTITUTION: In a base drive circuit for a power transistor Tp, are provided transistors T2, T3 for use of turn-on and turn-off operaton. A turn-on action of Tp is operated by a base current supplied through T2, and a turn-off action made to be operated by a turn-off current discharged through T3 at the same time of a turn- off action of Tp. In this way, all of the base current ib, at the time of turn-on of Tp, will flow in Tp only with a charge, accumulated in the base of Tp, discharged at the time of turn-off, consequently, a loss in the base drive circuit at the state of Tp being off will become zero
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12348577A JPS5457623A (en) | 1977-10-17 | 1977-10-17 | Transistor chopper device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12348577A JPS5457623A (en) | 1977-10-17 | 1977-10-17 | Transistor chopper device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5457623A true JPS5457623A (en) | 1979-05-09 |
Family
ID=14861787
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12348577A Pending JPS5457623A (en) | 1977-10-17 | 1977-10-17 | Transistor chopper device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5457623A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58108966A (en) * | 1981-12-22 | 1983-06-29 | ヒユーズ・エアクラフト・カンパニー | Power source |
JPS5925590A (en) * | 1982-08-02 | 1984-02-09 | Matsushita Electric Ind Co Ltd | Dc motor |
-
1977
- 1977-10-17 JP JP12348577A patent/JPS5457623A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58108966A (en) * | 1981-12-22 | 1983-06-29 | ヒユーズ・エアクラフト・カンパニー | Power source |
JPH0465632B2 (en) * | 1981-12-22 | 1992-10-20 | Hughes Aircraft Co | |
JPS5925590A (en) * | 1982-08-02 | 1984-02-09 | Matsushita Electric Ind Co Ltd | Dc motor |
JPH0241278B2 (en) * | 1982-08-02 | 1990-09-17 |
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