JPH0451674U - - Google Patents
Info
- Publication number
- JPH0451674U JPH0451674U JP9373190U JP9373190U JPH0451674U JP H0451674 U JPH0451674 U JP H0451674U JP 9373190 U JP9373190 U JP 9373190U JP 9373190 U JP9373190 U JP 9373190U JP H0451674 U JPH0451674 U JP H0451674U
- Authority
- JP
- Japan
- Prior art keywords
- reverse recovery
- recovery time
- diode
- time
- comparison
- 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
- 238000005259 measurement Methods 0.000 claims description 2
- 238000011084 recovery Methods 0.000 claims 5
- 238000010586 diagram Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 2
Landscapes
- Testing Of Individual Semiconductor Devices (AREA)
Description
第１図は本考案の第１の実施例を示すブロツク
構成図、第２図は第１図に示した構成の測定シー
ケンスを示すタイミング図、第３図は本考案によ
る第２の実施例を示すブロツク構成図、第４図は
従来のｔｒｒ測定装置の構成ブロツク図、第５図
ａは従来例のタイミング図、第５図ｂはｔｒｒ波
形図である。
１……試料１〜ｎ、２……順電流供給電源、３
……逆電流供給電源、４……ＩＦスイツチ、５…
…ＩＲスイツチ、６……順電流設定抵抗、７……
逆電流設定抵抗、８……ｔｒｒ検出抵抗１〜ｎ、
９……ｔｒｒ検出回路、１０……測定点設定回路
、１１……表示回路１〜ｎ、１２……試料切替回
路Ａ，Ｂ、１３……リレーコントロール回路、１
４……良、不良設定回路、１５……比較回路、１
６……良、不良表示用ＬＥＤ１〜２。
FIG. 1 is a block configuration diagram showing a first embodiment of the present invention, FIG. 2 is a timing diagram showing a measurement sequence of the configuration shown in FIG. 1, and FIG. 3 is a block diagram showing a second embodiment of the present invention. FIG. 4 is a block diagram of a conventional trr measuring device, FIG. 5a is a timing diagram of the conventional example, and FIG. 5b is a trr waveform diagram. 1...Samples 1 to n , 2...Forward current supply power supply, 3
...Reverse current supply power supply, 4...IF switch, 5...
...IR switch, 6...Forward current setting resistor, 7...
Reverse current setting resistor, 8... trr detection resistor 1~n ,
9... trr detection circuit, 10...measuring point setting circuit, 11...display circuit 1-n , 12...sample switching circuit A, B, 13...relay control circuit, 1
4...Good, bad setting circuit, 15...Comparison circuit, 1
6...Good/bad display LEDs 1-2.
Claims (1)
定時間内に繰返し測定し、逆方向回復時間を平均
化して求める装置において、前記一定時間内に複
数個のダイオードの測定を時分割的に行う回路と
、各ダイオードの逆方向回復時間を求めて表示す
る手段とを有することを特徴とするダイオード特
性測定装置。 (2) 判定しようとする逆方向回復時間を設定す
る良、不良設定手段と、前記逆方向回復時間を求
める手段により検出された実際の測定値と前記良
、不良設定手段により設定された判定基準値とを
入力して両者を比較する比較手段と、該比較手段
による比較の結果基準値内であればその結果を表
示する良、不良表示手段とを有することを更に特
徴とするダイオード特性測定装置。[Claims for Utility Model Registration] (1) In a device that repeatedly measures the reverse recovery time characteristics of a high-speed diode within a certain period of time and averages the reverse recovery time, A diode characteristic measuring device comprising: a circuit that performs measurements in a time-division manner; and means for determining and displaying the reverse recovery time of each diode. (2) A pass/fail setting means for setting the reverse recovery time to be judged, an actual measured value detected by the means for determining the reverse recovery time, and a judgment criterion set by the pass/fail setting means. A diode characteristic measuring device further comprising a comparison means for inputting a value and comparing the two, and a good/bad display means for displaying the result if the comparison result by the comparison means is within a reference value. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9373190U JPH0451674U (en) | 1990-09-05 | 1990-09-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9373190U JPH0451674U (en) | 1990-09-05 | 1990-09-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0451674U true JPH0451674U (en) | 1992-04-30 |
Family
ID=31831163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9373190U Pending JPH0451674U (en) | 1990-09-05 | 1990-09-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0451674U (en) |
-
1990
- 1990-09-05 JP JP9373190U patent/JPH0451674U/ja active Pending
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