JPS5672366A - Measuring device of holding current of thyristor - Google Patents
Measuring device of holding current of thyristorInfo
- Publication number
- JPS5672366A JPS5672366A JP15018679A JP15018679A JPS5672366A JP S5672366 A JPS5672366 A JP S5672366A JP 15018679 A JP15018679 A JP 15018679A JP 15018679 A JP15018679 A JP 15018679A JP S5672366 A JPS5672366 A JP S5672366A
- Authority
- JP
- Japan
- Prior art keywords
- thyristor
- gate
- comparator
- measuring device
- holding current
- 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
- Testing Of Individual Semiconductor Devices (AREA)
Abstract
PURPOSE: To enable stable measurement with good accurary, by detecting the turn-off of a tested thyristor with the change in layer high voltage induced between the gate and the cathode.
CONSTITUTION: When a tested thyristor 1 is ON-state, the gate voltage induced between the gate and the cathode is compared with the reference voltage from a reference voltage power supply 4 at a comparator 40. When the thyristor 1 turns off, the output of the comparator 40 is inverted and a signal is delivered to a control circuit 20. The input impedance of the voltage comparator 40 is made sufficently greater than that of a gate impedance element 3.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15018679A JPS5672366A (en) | 1979-11-19 | 1979-11-19 | Measuring device of holding current of thyristor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15018679A JPS5672366A (en) | 1979-11-19 | 1979-11-19 | Measuring device of holding current of thyristor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5672366A true JPS5672366A (en) | 1981-06-16 |
Family
ID=15491385
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15018679A Pending JPS5672366A (en) | 1979-11-19 | 1979-11-19 | Measuring device of holding current of thyristor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5672366A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05312896A (en) * | 1990-08-28 | 1993-11-26 | Internatl Business Mach Corp <Ibm> | Method and device for measuring conduction of scr |
EP0677874B1 (en) * | 1994-04-14 | 2001-09-19 | Sgs-Thomson Microelectronics S.A. | Default indicator for a protection component |
JP2012109211A (en) * | 2010-10-28 | 2012-06-07 | Mitsumi Electric Co Ltd | Illumination power supply unit and holding current control method |
JP2013016461A (en) * | 2011-07-06 | 2013-01-24 | Macroblock Inc | Automatic selection holding current circuit |
-
1979
- 1979-11-19 JP JP15018679A patent/JPS5672366A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05312896A (en) * | 1990-08-28 | 1993-11-26 | Internatl Business Mach Corp <Ibm> | Method and device for measuring conduction of scr |
EP0677874B1 (en) * | 1994-04-14 | 2001-09-19 | Sgs-Thomson Microelectronics S.A. | Default indicator for a protection component |
JP2012109211A (en) * | 2010-10-28 | 2012-06-07 | Mitsumi Electric Co Ltd | Illumination power supply unit and holding current control method |
JP2013016461A (en) * | 2011-07-06 | 2013-01-24 | Macroblock Inc | Automatic selection holding current circuit |
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