GB878289A - Improvements in direct-coupled transistor amplifiers - Google Patents
Improvements in direct-coupled transistor amplifiersInfo
- Publication number
- GB878289A GB878289A GB24682/60A GB2468260A GB878289A GB 878289 A GB878289 A GB 878289A GB 24682/60 A GB24682/60 A GB 24682/60A GB 2468260 A GB2468260 A GB 2468260A GB 878289 A GB878289 A GB 878289A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistor
- diagonal
- resistor
- direct
- bridge
- 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
878,289. Transistor amplifying circuits. STANDARD TELEPHONES & CABLES Ltd. July 15, 1960 [July 22, 1959], No. 24682/60. Class 40(6) A direct-coupled transistor amplifier comprises a bridge circuit having three arms comprising resistors Rl, R2, R3 respectively and a fourth comprising two non-linear resistive devices Znl, n2 in series. The non-linear resistive devices are preferably Zener diodes. The input is applied at terminals 1, 2, to one diagonal of the bridge, and a first transistor Tr1 has its input connected across the other diagonal. The output current of the first transistor Trl flows through resistor R4. A second transistor Tr2 has its input connected across the diagonal of a bridge formed by Zener diodes Znl, Zn2, the emitter-collector path of transistor Tr1, and resistor R4. The amplified output is taken across a resistor R5 in the collector circuit of the second transistor Tr2. The arrangement may be used in a voltage regulating circuit with a series-connected transistor as the regulating element.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU878289X | 1959-07-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB878289A true GB878289A (en) | 1961-09-27 |
Family
ID=3763184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24682/60A Expired GB878289A (en) | 1959-07-22 | 1960-07-15 | Improvements in direct-coupled transistor amplifiers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB878289A (en) |
-
1960
- 1960-07-15 GB GB24682/60A patent/GB878289A/en not_active Expired
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