JPS6439819A - Semiconductor switch device - Google Patents
Semiconductor switch deviceInfo
- Publication number
- JPS6439819A JPS6439819A JP62195178A JP19517887A JPS6439819A JP S6439819 A JPS6439819 A JP S6439819A JP 62195178 A JP62195178 A JP 62195178A JP 19517887 A JP19517887 A JP 19517887A JP S6439819 A JPS6439819 A JP S6439819A
- Authority
- JP
- Japan
- Prior art keywords
- current transformer
- voltage
- diode
- semiconductor switch
- capacitor
- 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
- Electronic Switches (AREA)
Abstract
PURPOSE:To efficiently suppress a reset voltage of a current transformer and a voltage at the time of a reverse current mode of the current transformer, by connecting a tertiary winding through a diode so as to become the polarity by which a magnetic flux of the current transformer is reset to both ends of a capacitor of a voltage clamp type snubber. CONSTITUTION:One terminal of a tertiary winding 3c of a current transformer 3 is connected to a source S side of a MOSFET 2 in common with one terminal of a secondary winding 2b, and the other terminal of the tertiary winding 3c is connected to an intermediate connecting point between a diode 21 of a voltage clamp type snubber 20 and a capacitor 22 through a diode 24. That is, it is connected so as to become the polarity by which a magnetic flux of the current transformer 3 is reset to both ends of the capacitor 22 of the voltage clamp type snubber 20. Accordingly, at the time of turn-off of a semiconductor switch, or at the time of conduction of a fly-wheel diode connected in parallel to the semiconductor switch, a secondary winding voltage of the current transformer 3 can be clamped to a constant-voltage. In such a way, the generation of an overvoltage can be suppressed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62195178A JPS6439819A (en) | 1987-08-06 | 1987-08-06 | Semiconductor switch device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62195178A JPS6439819A (en) | 1987-08-06 | 1987-08-06 | Semiconductor switch device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6439819A true JPS6439819A (en) | 1989-02-10 |
Family
ID=16336746
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62195178A Pending JPS6439819A (en) | 1987-08-06 | 1987-08-06 | Semiconductor switch device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6439819A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003080035A (en) * | 2001-09-12 | 2003-03-18 | Mitsubishi Heavy Ind Ltd | Device and method for denitration |
-
1987
- 1987-08-06 JP JP62195178A patent/JPS6439819A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003080035A (en) * | 2001-09-12 | 2003-03-18 | Mitsubishi Heavy Ind Ltd | Device and method for denitration |
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