GB1013282A - Variable gain transistor amplifier - Google Patents
Variable gain transistor amplifierInfo
- Publication number
- GB1013282A GB1013282A GB2164262A GB2164262A GB1013282A GB 1013282 A GB1013282 A GB 1013282A GB 2164262 A GB2164262 A GB 2164262A GB 2164262 A GB2164262 A GB 2164262A GB 1013282 A GB1013282 A GB 1013282A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistor
- amplifier
- amplifiers
- base
- june
- 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
- 238000005562 fading Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/02—Manually-operated control
- H03G3/04—Manually-operated control in untuned amplifiers
- H03G3/10—Manually-operated control in untuned amplifiers having semiconductor devices
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G1/00—Details of arrangements for controlling amplification
- H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
- H03G1/0017—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid state elements of the amplifier
- H03G1/0023—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid state elements of the amplifier in emitter-coupled or cascode amplifiers
Landscapes
- Amplifiers (AREA)
Abstract
1,013,282. Transistor amplifying circuits. FERNSEH G.m.b.H. June 5, 1962 [June 6, 1961], No. 21642/62. Heading H3T. A variable-gain transistor amplifier comprises means for applying input signals to the base of a first transistor 1 having the emittercollector path of a second transistor 2 of the same conductivity type connected in its collector lead, the second transistor having in turn a load impedance 7 across which an output signal is taken connected in its collector lead, the base of the second transistor being connected to means for varying the bias voltage applied thereto to vary the overall gain of the amplifier. A variable resistor 13 may be connected between collector and base of transistor 1 to provide an optional adjustment of the amplifier characteristics. A plurality of amplifiers F may be connected to a common load 7, Fig. 2 (not shown) to permit fading over from one vision channel to another. Two amplifiers may be connected in cascade, Fig. 3 (not shown); it is stated that the second amplifier compensates non-linearity in the first thus reducing overall distortion. The two amplifiers may be coupled through an emitter-follower stage, Fig. 4 (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF0034094 | 1961-06-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1013282A true GB1013282A (en) | 1965-12-15 |
Family
ID=7095410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2164262A Expired GB1013282A (en) | 1961-06-06 | 1962-06-05 | Variable gain transistor amplifier |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1013282A (en) |
-
1962
- 1962-06-05 GB GB2164262A patent/GB1013282A/en not_active Expired
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