JPS55135761A - Calibration circuit for measuring unit of forward current amplification factor - Google Patents
Calibration circuit for measuring unit of forward current amplification factorInfo
- Publication number
- JPS55135761A JPS55135761A JP4282379A JP4282379A JPS55135761A JP S55135761 A JPS55135761 A JP S55135761A JP 4282379 A JP4282379 A JP 4282379A JP 4282379 A JP4282379 A JP 4282379A JP S55135761 A JPS55135761 A JP S55135761A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- resistor
- measuring unit
- amplification factor
- forward 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.)
- Granted
Links
Landscapes
- Testing Of Individual Semiconductor Devices (AREA)
Abstract
PURPOSE: To enable to calibrate a forward current amplification factor measuring unit with high accuracy without using a standard element, by adjusting the resistance value of resistors and giving equal action as a transistor having an arbitrary hFE.
CONSTITUTION: The voltage drop in response to collector current is produced at the resistor 52, and this voltage eais outputted to the inversion amplifier 63 via the voltage follower 53. The voltage eb of another end of the resistor 52 is outputted to the voltage follower 54 and inversion amplifier 63. The output voltage ed of the inversion amplifier 63 is the voltage drop across the resistor 52 when the collector current flows. By adjusting the resistance value of the resistor 64, the same action as the transistor having an arbitrary hFE can be given.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4282379A JPS6026468B2 (en) | 1979-04-09 | 1979-04-09 | Calibration circuit for forward current amplification factor measurement device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4282379A JPS6026468B2 (en) | 1979-04-09 | 1979-04-09 | Calibration circuit for forward current amplification factor measurement device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55135761A true JPS55135761A (en) | 1980-10-22 |
JPS6026468B2 JPS6026468B2 (en) | 1985-06-24 |
Family
ID=12646665
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4282379A Expired JPS6026468B2 (en) | 1979-04-09 | 1979-04-09 | Calibration circuit for forward current amplification factor measurement device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6026468B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61157566U (en) * | 1985-03-20 | 1986-09-30 |
-
1979
- 1979-04-09 JP JP4282379A patent/JPS6026468B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6026468B2 (en) | 1985-06-24 |
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