JPS5530237A - Gate driver for gate turn-off thyristor - Google Patents
Gate driver for gate turn-off thyristorInfo
- Publication number
- JPS5530237A JPS5530237A JP10326678A JP10326678A JPS5530237A JP S5530237 A JPS5530237 A JP S5530237A JP 10326678 A JP10326678 A JP 10326678A JP 10326678 A JP10326678 A JP 10326678A JP S5530237 A JPS5530237 A JP S5530237A
- Authority
- JP
- Japan
- Prior art keywords
- gate
- power supply
- power circuit
- turn
- circuit
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/72—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region
Abstract
PURPOSE:To shorten extremely the time until a protection circuit is operated by detecting the abnormality of a turn-off power circuit from the increase rate of the rise of negative gate current and then by putting aprotecting power circuit to work. CONSTITUTION:Between the gate and cathode, gate driver unit 22 and protecting power circuit 23 are connected in parallel and to main unit 22, gate turn-off power circuit 26 of electronic switch 24 and direct-current power supply 25 connected in series and gate turn-off power circuit 29 of series-connected direct-current power supply 27 and electronic switch 28 in parallel to circuit 26 are both connected. Once the output of power supply 27 lowers, the increase rate of a negative gate current falls to decrease a voltage across inductance 34 down to less than a reference value, no output is generated by comparator 35 and AND gate 37 becomes open at a lagging point in time, so that the output of inverter 39 will be ''0''. At the same time, both the terminals of capacitor 23 charged higher than the prescribed voltage of power supply 27 are connected between the gate and cathode of GTO3. As a result, GTO3 turns OFF without breaking down by heating.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53103266A JPS5932012B2 (en) | 1978-08-24 | 1978-08-24 | Gate drive device for gate turn-off thyristor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53103266A JPS5932012B2 (en) | 1978-08-24 | 1978-08-24 | Gate drive device for gate turn-off thyristor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5530237A true JPS5530237A (en) | 1980-03-04 |
JPS5932012B2 JPS5932012B2 (en) | 1984-08-06 |
Family
ID=14349619
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53103266A Expired JPS5932012B2 (en) | 1978-08-24 | 1978-08-24 | Gate drive device for gate turn-off thyristor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5932012B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992005636A1 (en) * | 1990-09-18 | 1992-04-02 | General Electric Company | Gate turnoff thyristor control circuit with shorted gate detection |
US5262691A (en) * | 1990-09-18 | 1993-11-16 | General Electric Company | Gate turnoff thyristor control circuit with shorted gate detection |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6376142U (en) * | 1986-05-16 | 1988-05-20 | ||
JPH0527628Y2 (en) * | 1987-05-20 | 1993-07-14 |
-
1978
- 1978-08-24 JP JP53103266A patent/JPS5932012B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992005636A1 (en) * | 1990-09-18 | 1992-04-02 | General Electric Company | Gate turnoff thyristor control circuit with shorted gate detection |
US5262691A (en) * | 1990-09-18 | 1993-11-16 | General Electric Company | Gate turnoff thyristor control circuit with shorted gate detection |
Also Published As
Publication number | Publication date |
---|---|
JPS5932012B2 (en) | 1984-08-06 |
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