GB867954A - Improvements in transistor circuit arrangements - Google Patents
Improvements in transistor circuit arrangementsInfo
- Publication number
- GB867954A GB867954A GB2213859A GB2213859A GB867954A GB 867954 A GB867954 A GB 867954A GB 2213859 A GB2213859 A GB 2213859A GB 2213859 A GB2213859 A GB 2213859A GB 867954 A GB867954 A GB 867954A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistor
- voltage
- emitter
- current
- characteristic
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
- H03F1/302—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in bipolar transistor amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
867,954. Transistor amplifier circuits. REGULATOR A.G. July 6, 1959 [July 8, 1958], No. 23138/59. Class 40(6) An emitter follower transistor amplifier has in its emitter circuit a thermistor operated at the peak of its current voltage characteristic or on the downwardly sloping region of the characteristic so as to stabilize the emitter collector voltage. Fig. 4 shows an emitter follower stage directly coupled to a common emitter stage. A thermistor connected in the emitter circuit of the first transistor is operated on the part of the characteristic where the voltage developed across it is approximately independent of the current passing through it or where the voltage decreases slightly with increasing current. Thus, changes in current through the transistor due to changes in the transistor characteristic or replacement of the transistor do not vary the voltage across the thermistor and accordingly do not vary the proportion of the input voltage developed across the transistor. Changes in ambient temperature of the circuit also cause changes in the current through the thermistor so as to maintain the collector emitter voltage more constant.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE650058 | 1958-07-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB867954A true GB867954A (en) | 1961-05-10 |
Family
ID=20268837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2213859A Expired GB867954A (en) | 1958-07-08 | 1959-07-06 | Improvements in transistor circuit arrangements |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH371148A (en) |
| GB (1) | GB867954A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4473793A (en) * | 1981-03-26 | 1984-09-25 | Dbx, Inc. | Bias generator |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1408341A (en) * | 1964-07-02 | 1965-08-13 | Materiel Electrique S W Le | Differential amplifier |
-
1959
- 1959-07-06 CH CH7537259A patent/CH371148A/en unknown
- 1959-07-06 GB GB2213859A patent/GB867954A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4473793A (en) * | 1981-03-26 | 1984-09-25 | Dbx, Inc. | Bias generator |
Also Published As
| Publication number | Publication date |
|---|---|
| CH371148A (en) | 1963-08-15 |
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