JPS6184577U - - Google Patents
Info
- Publication number
- JPS6184577U JPS6184577U JP17028684U JP17028684U JPS6184577U JP S6184577 U JPS6184577 U JP S6184577U JP 17028684 U JP17028684 U JP 17028684U JP 17028684 U JP17028684 U JP 17028684U JP S6184577 U JPS6184577 U JP S6184577U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- current
- measured
- detection circuit
- constant 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
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Testing Of Individual Semiconductor Devices (AREA)
Description
第１図は本考案の１実施例を示す回路図、第２
図はＬＥＤレベル表示器の表示部を示す図である
。
１…レギユレータ、２，３，１２，１４，１７
，１９，２０，２１，２２，２４，２５，２６，
２８，２９，３０，３４，３５，３６…抵抗、４
…バツフアーアンプ、５…演算増幅器、６，７，
８，９，１０，１１，１５，１６，２３，２７，
３１，３２…トランジスタ、１３…スイツチ、１
８…ＬＥＤレベル表示器、１８ａ…ＬＥＤ素子、
１８ｂ…表示部、３３…コンデンサ、Ｔｐ，Ｔｎ
…被測定トランジスタ。
Figure 1 is a circuit diagram showing one embodiment of the present invention, Figure 2 is a circuit diagram showing one embodiment of the present invention.
The figure is a diagram showing a display section of an LED level indicator. 1...regulator, 2, 3, 12, 14, 17
,19,20,21,22,24,25,26,
28, 29, 30, 34, 35, 36...Resistance, 4
... Buffer amplifier, 5... Operational amplifier, 6, 7,
8, 9, 10, 11, 15, 16, 23, 27,
31, 32...Transistor, 13...Switch, 1
8...LED level indicator, 18a...LED element,
18b...Display section, 33...Capacitor, Tp, Tn
...transistor under test.
Claims (1)
は流出させる定電流回路と、被測定トランジスタ
のコレクタ電流を検出する検出回路と、検出回路
で検出されたコレクタ電流を電流利得として表示
する表示手段とを備えたことを特徴とするトラン
ジスタのＨＦＥ選別器。 A constant current circuit that causes a constant current to flow into or out of the base of the transistor to be measured, a detection circuit that detects the collector current of the transistor to be measured, and a display means that displays the collector current detected by the detection circuit as a current gain. An HFE selector for transistors characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17028684U JPS6184577U (en) | 1984-11-08 | 1984-11-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17028684U JPS6184577U (en) | 1984-11-08 | 1984-11-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6184577U true JPS6184577U (en) | 1986-06-04 |
Family
ID=30727994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17028684U Pending JPS6184577U (en) | 1984-11-08 | 1984-11-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6184577U (en) |
-
1984
- 1984-11-08 JP JP17028684U patent/JPS6184577U/ja active Pending
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