GB343999A - Improvements in thermionic amplifiers - Google Patents
Improvements in thermionic amplifiersInfo
- Publication number
- GB343999A GB343999A GB33296/29A GB3329629A GB343999A GB 343999 A GB343999 A GB 343999A GB 33296/29 A GB33296/29 A GB 33296/29A GB 3329629 A GB3329629 A GB 3329629A GB 343999 A GB343999 A GB 343999A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grids
- valves
- varying
- volume
- biases
- 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
- 230000003321 amplification Effects 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 238000003199 nucleic acid amplification method 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
- H03G3/14—Manually-operated control in frequency-selective amplifiers
- H03G3/16—Manually-operated control in frequency-selective amplifiers having discharge tubes
Landscapes
- Amplifiers (AREA)
Abstract
343,999. Valve amplifying circuits. RADIO FREQUENCY LABORATORIES, Inc. ; Boonton, New Jersey, U.S.A. Nov. 1, 1929, No. 33296. Convention date, Oct. 3. [Class 40 (v).] An amplifier comprises two thermionic amplifying-valves 1, 2 arranged differentially, that is with grids G1 in parallel and plates in push-pull or vice versa (Fig. 7, not shown). Volume is controlled by varying the grid bias on one or both valves by potentiometers 13<1>, 13<11>. If both are varied the sum of the biases is kept constant. When the stage gain, resulting from the difference in the grid biases, is small, the amplification is substantially distortionless (Fig. 3, not shown). According to a modification, volume is controlled by varying the potential on one of the screening-grids G2 (Fig. 6, not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US343999XA | 1929-10-03 | 1929-10-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB343999A true GB343999A (en) | 1931-03-02 |
Family
ID=21876153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB33296/29A Expired GB343999A (en) | 1929-10-03 | 1929-11-01 | Improvements in thermionic amplifiers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB343999A (en) |
-
1929
- 1929-11-01 GB GB33296/29A patent/GB343999A/en not_active Expired
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