GB303020A - Terminal repeater device for the reproduction of sound independent of frequency - Google Patents
Terminal repeater device for the reproduction of sound independent of frequencyInfo
- Publication number
- GB303020A GB303020A GB38004/28A GB3800428A GB303020A GB 303020 A GB303020 A GB 303020A GB 38004/28 A GB38004/28 A GB 38004/28A GB 3800428 A GB3800428 A GB 3800428A GB 303020 A GB303020 A GB 303020A
- Authority
- GB
- United Kingdom
- Prior art keywords
- loud
- valves
- speaker
- reproduction
- frequency
- 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
- H03F3/02—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with tubes only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
303,020. Ardenne, M. von. Dec. 22, 1927, [Convention date]. Systems for transmitting music; amplifying systems.-In order to obtain uniform reproduction throughout the frequency range, output valves of different characteristics are arranged in parallel and operate a single loud-speaker or separate loud-speakers having similar or different characteristics. In one arrangement, an electrodynamic and an electro-static loud-speaker are connected to valves of low and high impedance respectively. In the arrangement shown in Fig. 3, output valves R1, R2 of low and high impedance respectively, are connected in parallel and operate separate windings of a single loud-speaker Ll. The relative output of the valves may be controlled by a variable resistance W in the grid circuit of one of them.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE303020X | 1927-12-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB303020A true GB303020A (en) | 1930-04-22 |
Family
ID=6109270
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB38004/28A Expired GB303020A (en) | 1927-12-22 | 1928-12-22 | Terminal repeater device for the reproduction of sound independent of frequency |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB303020A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3024361A (en) * | 1958-04-18 | 1962-03-06 | Philips Corp | Tuning and overload indicator circuit |
-
1928
- 1928-12-22 GB GB38004/28A patent/GB303020A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3024361A (en) * | 1958-04-18 | 1962-03-06 | Philips Corp | Tuning and overload indicator circuit |
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