GB1060262A - Improvements in or relating to transistor amplifiers - Google Patents
Improvements in or relating to transistor amplifiersInfo
- Publication number
- GB1060262A GB1060262A GB2434264A GB2434264A GB1060262A GB 1060262 A GB1060262 A GB 1060262A GB 2434264 A GB2434264 A GB 2434264A GB 2434264 A GB2434264 A GB 2434264A GB 1060262 A GB1060262 A GB 1060262A
- Authority
- GB
- United Kingdom
- Prior art keywords
- emitter
- npn
- pnp
- transistors
- amplifier
- 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
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/30—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor
- H03F3/3069—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the emitters of complementary power transistors being connected to the output
- H03F3/3076—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the emitters of complementary power transistors being connected to the output with symmetrical driving of the end stage
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
1,060,262. Transistor amplifiers. MINISTER OF AVIATION. June 3, 1965 [June 11, 1964], No. 24342/64. Heading H3T. A transistor amplifier with reduced crossover distortion and temperature drift comprises PNP and NPN- emitter-followers Q3 and Q1 (Fig. 2) with a common input to their bases, emitter-coupled respectively to the bases of further NPN and PNP transistors Q4 and Q2 having a common emitter load R7. By including switches S1 and S2 (which may be further transistors) the amplifier may be used as a high-impedance switching circuit when all four transistors are cut off simultaneously. In this case diodes may be joined in series with the switches and also in series with the emitters of the input transistors to prevent breakdown of the emitter-base junctions when reversedbiased. Each individual transistor may be replaced by a Darlington pair. Fig. 1 (not shown) describes a transistor amplifier not forming part of the invention. This amplifier comprises an NPN emitter-follower feeding a common-emitter PNP stage, the base of the NPN and the emitter of the PNP being connected to potentiometers across the power supply. The centre tap of the latter is earthed and the NPN collector is joined to this point by a Zener diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2434264A GB1060262A (en) | 1964-06-11 | 1964-06-11 | Improvements in or relating to transistor amplifiers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2434264A GB1060262A (en) | 1964-06-11 | 1964-06-11 | Improvements in or relating to transistor amplifiers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1060262A true GB1060262A (en) | 1967-03-01 |
Family
ID=10210218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2434264A Expired GB1060262A (en) | 1964-06-11 | 1964-06-11 | Improvements in or relating to transistor amplifiers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1060262A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2121635A (en) * | 1982-06-07 | 1983-12-21 | Western Electric Co | Improvements in or relating to linear amplifier circuits |
| GB2121633A (en) * | 1982-06-07 | 1983-12-21 | Western Electric Co | Improvements in or relating to electronic circuits |
-
1964
- 1964-06-11 GB GB2434264A patent/GB1060262A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2121635A (en) * | 1982-06-07 | 1983-12-21 | Western Electric Co | Improvements in or relating to linear amplifier circuits |
| GB2121633A (en) * | 1982-06-07 | 1983-12-21 | Western Electric Co | Improvements in or relating to electronic circuits |
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