JPS5572877A - Measuring method for amplification factor of emitter earth direct-current to direct-current collector current of transistor - Google Patents
Measuring method for amplification factor of emitter earth direct-current to direct-current collector current of transistorInfo
- Publication number
- JPS5572877A JPS5572877A JP14689878A JP14689878A JPS5572877A JP S5572877 A JPS5572877 A JP S5572877A JP 14689878 A JP14689878 A JP 14689878A JP 14689878 A JP14689878 A JP 14689878A JP S5572877 A JPS5572877 A JP S5572877A
- Authority
- JP
- Japan
- Prior art keywords
- current
- direct
- voltage
- collector
- amplification factor
- 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 measure an amplification factor of an emitter earth direct current to an expected collector current without flowing the collector current by forming a prescribed circuit.
CONSTITUTION: Between a base and emitter of measured transistor Q, bias direct- current power supply E1 is connected and fine alternating-current signal source 10 is also connected. Further, bias direct-current power supply E2 is also connected between a collector and emitter. Then voltages VB1 and VC1 generated at resistances R1 and R2 respectively are obtained and alternating-current voltage ΔVC1 generated at resistance R3 is converted into direct-current voltage ΔVC1 via AC-DC circuit 15. Then the DC voltage is applied to arithmetic circuit 16 which is formed so as to obtain DC voltage ΔVB1' depending upon AC signal base current ΔIB1 in the internal part and DC voltage VC according to prescribed collector voltage IC. Here, fixed arithmetic is performed and the amplification factor can be obtained without flowing actual prescribed collector current IC.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14689878A JPS5572877A (en) | 1978-11-28 | 1978-11-28 | Measuring method for amplification factor of emitter earth direct-current to direct-current collector current of transistor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14689878A JPS5572877A (en) | 1978-11-28 | 1978-11-28 | Measuring method for amplification factor of emitter earth direct-current to direct-current collector current of transistor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5572877A true JPS5572877A (en) | 1980-06-02 |
Family
ID=15418059
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14689878A Pending JPS5572877A (en) | 1978-11-28 | 1978-11-28 | Measuring method for amplification factor of emitter earth direct-current to direct-current collector current of transistor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5572877A (en) |
-
1978
- 1978-11-28 JP JP14689878A patent/JPS5572877A/en active Pending
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