JPS5739366A - Measuring method for turn-off time of thyristor - Google Patents
Measuring method for turn-off time of thyristorInfo
- Publication number
- JPS5739366A JPS5739366A JP11543580A JP11543580A JPS5739366A JP S5739366 A JPS5739366 A JP S5739366A JP 11543580 A JP11543580 A JP 11543580A JP 11543580 A JP11543580 A JP 11543580A JP S5739366 A JPS5739366 A JP S5739366A
- Authority
- JP
- Japan
- Prior art keywords
- turn
- voltage
- circuit
- time
- thyristor
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/26—Testing of individual semiconductor devices
- G01R31/2607—Circuits therefor
- G01R31/263—Circuits therefor for testing thyristors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Individual Semiconductor Devices (AREA)
- Thyristor Switches And Gates (AREA)
Abstract
PURPOSE:To measure a turn-off time without failure of turn-off, by detecting the voltage between the gate and the cathode at the time of a turn-off operation of a thyristor. CONSTITUTION:A turn-off excess angle is shortened gradually by varying the timing of a reapplying voltage circuit 100, voltage between the gate and the cathode of a thyristor to be measured 3 is detected in each time, and its voltage value is compared with a reference electric power supply 700 which has been set in advance to a voltage value immediately before failure of turn-off, by a voltage comparing circuit 600. An output of the comparing circuit 600 is inputted to a controlling circuit 500, and a control signal according to the input is inputted to gate circuits 4, 6, a charging reverse voltage circuit 9 and the reapplying voltage circuit 100. That is to say, in case when the turn-off excess angle is long, each operation is repeated over again, the excess angle is shortened, and when the measured voltage has coincided with the reference value, its excess angle is measured. In this way, work efficiency is greatly improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11543580A JPS5941146B2 (en) | 1980-08-21 | 1980-08-21 | How to measure thyristor turn-off time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11543580A JPS5941146B2 (en) | 1980-08-21 | 1980-08-21 | How to measure thyristor turn-off time |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5739366A true JPS5739366A (en) | 1982-03-04 |
| JPS5941146B2 JPS5941146B2 (en) | 1984-10-04 |
Family
ID=14662486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11543580A Expired JPS5941146B2 (en) | 1980-08-21 | 1980-08-21 | How to measure thyristor turn-off time |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5941146B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112415356A (en) * | 2020-11-05 | 2021-02-26 | 阳光电源股份有限公司 | Thyristor turn-off characteristic testing device and testing method |
-
1980
- 1980-08-21 JP JP11543580A patent/JPS5941146B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112415356A (en) * | 2020-11-05 | 2021-02-26 | 阳光电源股份有限公司 | Thyristor turn-off characteristic testing device and testing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5941146B2 (en) | 1984-10-04 |
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