GB131056A - Improvements in or relating to Audion or Lamp Relay or Amplifying Apparatus for use in Telephony. - Google Patents
Improvements in or relating to Audion or Lamp Relay or Amplifying Apparatus for use in Telephony.Info
- Publication number
- GB131056A GB131056A GB5927/18A GB592718A GB131056A GB 131056 A GB131056 A GB 131056A GB 5927/18 A GB5927/18 A GB 5927/18A GB 592718 A GB592718 A GB 592718A GB 131056 A GB131056 A GB 131056A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transformer
- tube
- primary
- circuit
- speech
- 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
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000009466 transformation Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/54—Circuits using the same frequency for two directions of communication
- H04B1/58—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F19/00—Fixed transformers or mutual inductances of the signal type
- H01F19/02—Audio-frequency transformers or mutual inductances, i.e. not suitable for handling frequencies considerably beyond the audio range
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/34—Adaptation for use in or on ships, submarines, buoys or torpedoes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C1/00—Amplitude modulation
- H03C1/16—Amplitude modulation by means of discharge device having at least three electrodes
-
- 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
- H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
-
- 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
- H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
- H03F1/12—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of attenuating means
- H03F1/13—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of attenuating means in discharge-tube amplifiers
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/22—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with tubes only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/46—Reflex amplifiers
- H03F3/48—Reflex amplifiers with tubes only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/62—Two-way amplifiers
- H03F3/64—Two-way amplifiers with tubes only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/1638—Special circuits to enhance selectivity of receivers not otherwise provided for
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/22—Circuits for receivers in which no local oscillation is generated
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Amplifiers (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Primary Cells (AREA)
- External Artificial Organs (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
- Transmitters (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Circuit For Audible Band Transducer (AREA)
- Devices For Supply Of Signal Current (AREA)
Abstract
131,056. Latour, M. April 15, 1916, [Convention date]. Correcting distortion in long lines by emphasizing speech currents of higher frequency. - Distortion of speech in long-distance telephony is corrected by the employment, at the transmitting or receiving station, of vacuum-tube amplifiers the circuits of which are arranged to emphasise the speech current components of higher frequency. Fig. 1 shows the apparatus arranged at the transmitting-station. A battery 7 and microphone 6 are in circuit with the primary of a transformer T<1>, the secondary of which is connected across the grid 3 and filament 4 of a vacuum-tube amplifier. The plate circuit of this tube feeds the grid circuit of a second tube through a transformer T<2>, and the plate circuit of the second tube feeds the line L through a transformer T<3>. Each transformer primary is shunted by an inductance 8 which gives preference of passage to the low-frequency speech components, the apparatus as a whole thus emphasizing the highfrequency components. Alternatively, the transformers may be constructed to take a large magnetizing-current, for example by providing an airgap in the magnetic circuits. When the amplifier is used at the receiving-station, the line-wires feed the primary of the transformer T<1>, and a telephone receiver is placed across the secondary of the transformer T<3>. In this case, small series condensers replace the shunt inductances 8; or the. primary circuits of the transformers may include a condenser and inductance, placed in parallel and proportioned to offer a greater impedance for low than for higher frequencies. The same set of vacuum tubes may be used for transmission and reception, a switch being arranged for making the necessary changes in the circuit connexions. This switch may also be arranged to change the transformation ratio of the transformers.
Applications Claiming Priority (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR512295T | 1916-04-15 | ||
| FR448995X | 1916-04-15 | ||
| FR129659X | 1916-09-12 | ||
| FR129660X | 1916-10-02 | ||
| FR130022X | 1916-12-20 | ||
| GB146117A GB108269A (en) | 1917-01-29 | 1917-01-29 | Improvements in or relating to Furnaces. |
| GB5363/17A GB127318A (en) | 1916-04-15 | 1917-04-16 | Improvements in or relating to Audion or Lamp Relay or Amplifying Apparatus. |
| FR147758X | 1918-12-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB131056A true GB131056A (en) | 1919-08-21 |
Family
ID=40032694
Family Applications (9)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB132668D Active GB132668A (en) | 1916-04-15 | ||
| GB131362D Active GB131362A (en) | 1916-04-15 | ||
| GB132118D Active GB132118A (en) | 1916-04-15 | ||
| GB131639D Active GB131639A (en) | 1916-04-15 | ||
| GB5927/18A Expired GB131056A (en) | 1916-04-15 | 1917-04-16 | Improvements in or relating to Audion or Lamp Relay or Amplifying Apparatus for use in Telephony. |
| GB13094/17A Expired GB129659A (en) | 1916-04-15 | 1917-09-12 | Improvements in or relating to Audion or Lamp Relay or Amplifying Apparatus. |
| GB14165/17A Expired GB129660A (en) | 1916-04-15 | 1917-10-01 | Improvements in or relating to Audion or Lamp Relay or Amplifying Apparatus. |
| GB18920/17A Expired GB130022A (en) | 1916-04-15 | 1917-12-20 | Improvements in or relating to Audion or Lamp Relay or Amplifying Apparatus. |
| GB19761/20A Expired GB147758A (en) | 1916-04-15 | 1920-07-08 | Improvements in thermionic tube amplifying devices |
Family Applications Before (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB132668D Active GB132668A (en) | 1916-04-15 | ||
| GB131362D Active GB131362A (en) | 1916-04-15 | ||
| GB132118D Active GB132118A (en) | 1916-04-15 | ||
| GB131639D Active GB131639A (en) | 1916-04-15 |
Family Applications After (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13094/17A Expired GB129659A (en) | 1916-04-15 | 1917-09-12 | Improvements in or relating to Audion or Lamp Relay or Amplifying Apparatus. |
| GB14165/17A Expired GB129660A (en) | 1916-04-15 | 1917-10-01 | Improvements in or relating to Audion or Lamp Relay or Amplifying Apparatus. |
| GB18920/17A Expired GB130022A (en) | 1916-04-15 | 1917-12-20 | Improvements in or relating to Audion or Lamp Relay or Amplifying Apparatus. |
| GB19761/20A Expired GB147758A (en) | 1916-04-15 | 1920-07-08 | Improvements in thermionic tube amplifying devices |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US1607466A (en) |
| DE (2) | DE448995C (en) |
| FR (20) | FR512295A (en) |
| GB (9) | GB131056A (en) |
| NL (5) | NL16393C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3919238A1 (en) * | 1989-06-13 | 1990-12-20 | Voest Alpine Ind Anlagen | RINSING DEVICE FOR A METALLURGICAL VESSEL |
-
0
- GB GB132668D patent/GB132668A/en active Active
- NL NL16084D patent/NL16084C/xx active
- GB GB131362D patent/GB131362A/en active Active
- NL NL14277D patent/NL14277C/xx active
- NL NL16667D patent/NL16667C/xx active
- NL NL17823D patent/NL17823C/xx active
- NL NL16393D patent/NL16393C/xx active
- GB GB132118D patent/GB132118A/en active Active
- GB GB131639D patent/GB131639A/en active Active
-
1916
- 1916-04-15 FR FR512295A patent/FR512295A/en not_active Expired
- 1916-09-12 FR FR21851A patent/FR21851E/en not_active Expired
- 1916-10-02 FR FR21852A patent/FR21852E/en not_active Expired
- 1916-10-23 FR FR21853A patent/FR21853E/en not_active Expired
- 1916-10-30 FR FR21854A patent/FR21854E/en not_active Expired
- 1916-11-30 FR FR21855A patent/FR21855E/en not_active Expired
- 1916-12-20 FR FR21856A patent/FR21856E/en not_active Expired
-
1917
- 1917-01-09 FR FR21857A patent/FR21857E/en not_active Expired
- 1917-04-03 FR FR21858A patent/FR21858E/en not_active Expired
- 1917-04-16 GB GB5927/18A patent/GB131056A/en not_active Expired
- 1917-04-30 FR FR21859A patent/FR21859E/en not_active Expired
- 1917-06-15 FR FR21860A patent/FR21860E/en not_active Expired
- 1917-06-30 FR FR21861A patent/FR21861E/en not_active Expired
- 1917-08-02 FR FR21862A patent/FR21862E/en not_active Expired
- 1917-09-07 FR FR21863A patent/FR21863E/en not_active Expired
- 1917-09-12 GB GB13094/17A patent/GB129659A/en not_active Expired
- 1917-10-01 GB GB14165/17A patent/GB129660A/en not_active Expired
- 1917-10-03 FR FR21864A patent/FR21864E/en not_active Expired
- 1917-11-17 FR FR21865A patent/FR21865E/en not_active Expired
- 1917-12-20 GB GB18920/17A patent/GB130022A/en not_active Expired
-
1918
- 1918-12-04 FR FR21866A patent/FR21866E/en not_active Expired
-
1919
- 1919-12-02 FR FR22644A patent/FR22644E/en not_active Expired
-
1920
- 1920-07-08 DE DEL63600D patent/DE448995C/en not_active Expired
- 1920-07-08 DE DEL54113D patent/DE450862C/en not_active Expired
- 1920-07-08 GB GB19761/20A patent/GB147758A/en not_active Expired
- 1920-09-22 FR FR24089A patent/FR24089E/en not_active Expired
-
1921
- 1921-08-19 US US493670A patent/US1607466A/en not_active Expired - Lifetime
- 1921-12-02 FR FR25711D patent/FR25711E/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL16084C (en) | |
| FR21861E (en) | 1921-04-09 |
| FR21862E (en) | 1921-04-09 |
| FR22644E (en) | 1921-08-04 |
| FR21865E (en) | 1921-04-09 |
| DE448995C (en) | 1927-09-13 |
| FR21863E (en) | 1921-04-09 |
| NL17823C (en) | |
| NL16667C (en) | |
| GB132118A (en) | |
| GB129660A (en) | 1919-07-24 |
| GB131362A (en) | |
| NL16393C (en) | |
| FR21859E (en) | 1921-04-09 |
| FR21855E (en) | 1921-04-09 |
| FR21851E (en) | 1921-04-09 |
| FR21853E (en) | 1921-04-09 |
| FR512295A (en) | 1921-01-19 |
| FR25711E (en) | 1923-05-17 |
| FR21854E (en) | 1921-04-09 |
| GB131639A (en) | |
| GB147758A (en) | 1921-09-22 |
| FR21864E (en) | 1921-04-09 |
| FR21852E (en) | 1921-04-09 |
| GB130022A (en) | 1919-07-31 |
| FR21857E (en) | 1921-04-09 |
| GB129659A (en) | 1919-07-24 |
| FR21856E (en) | 1921-04-09 |
| FR21866E (en) | 1921-04-09 |
| GB132668A (en) | |
| FR24089E (en) | 1922-02-21 |
| US1607466A (en) | 1926-11-16 |
| DE450862C (en) | 1927-10-11 |
| FR21860E (en) | 1921-04-09 |
| NL14277C (en) | |
| FR21858E (en) | 1921-04-09 |
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