GB140506A – Improvements in or relating to lamp telephone relays
– Google Patents
GB140506A – Improvements in or relating to lamp telephone relays
– Google Patents
Improvements in or relating to lamp telephone relays
Info
Publication number
GB140506A
GB140506A
GB20209/18A
GB2020918A
GB140506A
GB 140506 A
GB140506 A
GB 140506A
GB 20209/18 A
GB20209/18 A
GB 20209/18A
GB 2020918 A
GB2020918 A
GB 2020918A
GB 140506 A
GB140506 A
GB 140506A
Authority
GB
United Kingdom
Prior art keywords
windings
transformer
lines
primary
line
Prior art date
1918-05-27
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
Application number
GB20209/18A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
1918-05-27
Filing date
1918-12-05
Publication date
1920-04-01
1918-12-05
Application filed by Individual
filed
Critical
Individual
1920-04-01
Publication of GB140506A
publication
Critical
patent/GB140506A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
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
H04B3/00—Line transmission systems
H04B3/02—Details
H04B3/36—Repeater circuits
Abstract
140,506. Latour, M. Dec. 5, 1917, [Convention date]. Thermionic relays and repeaters.-A telephonic amplifying system for reciprocal working comprises two or more thermionic relays, an input transformer the primary windings of which are connected in series or in shunt between the lines, and an output transformer the secondary winding or windings of which are connected in shunt or in series between the lines. Formulµ are given for the ratios of transformation of the input and output transformers, and circuit connexions for the telephone of the relay operator are provided. Resistances are provided to prevent arcing in the reiay due to the unbalanced conditions of the lines. The input transformer 5, Fig. 2, is provided with two primary windings 8, 10 in the line L<1> and with two primary windings 9, 11 in the line L<2>; while the secondary winding of the output transformer 7 is connected to the common terminals of the windings 8, 9 and 10, 11. Resistances 12, 13 are provided to prevent arcing due to lack of balance between the lines L<1>, L<2>. The telephone apparatus 14, 15 and 16 of the relay operator is connected to the common terminals of the transformer windings 8, 9 and 10, 11. In the modification shown in Fig. 1, the output transformer 7 is provided two secondary windings 8, 10 in the line L’, and with two secondary windings 9, 11 in the line L<2>; while the primary winding of the input transformer 5 is connected to the common terminals of the windings. The operator’s telephone is connected in circuit by a separate transformer 16 the primary winding of which may be associated with the transformer 7. In the modification shown in Fig. 4, the primary windings 8, 9 of the input transformer 5 are connected between the lines L<1>, L<2>, and the output transformer is provided with secondary windings 23, 24 connected across the lines. In a further modification, the primary windings 8, 9 of the input transformer 5 are connected across the lines L<1>, L<2> respectively, and the secondary windings 23, 24 of the output transformer 7 are connected in the lines L<1>, L<2>. In the arrangement shown in Fig. 5, the relay 17 is shunted by the windings of an inductance 22 as described in Specification 131,704, and the telephone circuits of the relay operator are connected across the middle points of the windings. The telephone circuits of the operator may be connected by a transformer winding associated with the inductance 22. If m denotes the number of turns of the secondary winding of the transformer 5, p the total number of turns of the primary windings, y the apparent resistance of the grid circuit of the first lamp, and z the impedance on each side of the line, then, for the arrangements shown in Figs. 2 and 4, it should be arranged, in order to obtain the maximum excitation of the amplifier, that mp# = #v 2z, and for the arrangement shown in Figs. 1 and 3, that m p = #2y z. Also, if n denotes the number of turns of the primary of the transformer 7, q the total number of turns of the secondary, z the impedance on each side of line, and x the apparent resistance of the lamp 2, then for the maximum output of the amplifier for the arrangements shown in Figs. 2 and 4, it should be arranged that nq#=#2x#z, and for the arrangements shown in Figs. 1 and 3, that n q = # x#2z Specification 131,639, which describes a reversible relay, is referred to.
GB20209/18A
1918-05-27
1918-12-05
Improvements in or relating to lamp telephone relays
Expired
GB140506A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
FR22456T
1918-05-27
Publications (1)
Publication Number
Publication Date
GB140506A
true
GB140506A
(en)
1920-04-01
Family
ID=8661319
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB20209/18A
Expired
GB140506A
(en)
1918-05-27
1918-12-05
Improvements in or relating to lamp telephone relays
Country Status (2)
Country
Link
FR
(3)
FR503936A
(en)
GB
(1)
GB140506A
(en)
1917
1917-12-05
FR
FR503936A
patent/FR503936A/en
not_active
Expired
1918
1918-02-14
FR
FR21655A
patent/FR21655E/en
not_active
Expired
1918-05-27
FR
FR22456A
patent/FR22456E/en
not_active
Expired
1918-12-05
GB
GB20209/18A
patent/GB140506A/en
not_active
Expired
Also Published As
Publication number
Publication date
FR21655E
(en)
1921-01-11
FR503936A
(en)
1920-06-21
FR22456E
(en)
1921-07-12
Similar Documents
Publication
Publication Date
Title
GB140506A
(en)
1920-04-01
Improvements in or relating to lamp telephone relays
US1687253A
(en)
1928-10-09
Negative impedance device
GB238512A
(en)
1926-07-01
Improvements in loaded telephone and like lines
US2643300A
(en)
1953-06-23
Telephone subscriber set with sidetone reduction for central battery systems
US1643075A
(en)
1927-09-20
Radio signaling apparatus
GB397551A
(en)
1933-08-28
Improvements in electrical impedance networks and amplifiers
GB534091A
(en)
1941-02-27
Improvements in telephone systems
GB287847A
(en)
1928-11-15
Filter for preventing distortion of currents of telephonic frequencies
GB897613A
(en)
1962-05-30
Improvements in or relating to voice-frequency amplifiers
US1243066A
(en)
1917-10-16
Network for neutralizing the characteristic reactance of a loaded line.
US1374219A
(en)
1921-04-12
Composite transmission system
US1589395A
(en)
1926-06-22
Telephone repeater
US1548062A
(en)
1925-08-04
Coupling arrangement for multiplex transmission
GB145869A
(en)
1920-07-02
Improvements in or relating to telephonic repeaters
US1474430A
(en)
1923-11-20
Telephone bepeatee
US1516519A
(en)
1924-11-25
Electrical transformer
GB147759A
(en)
1921-11-08
Improvements in telephone and the like systems
GB134444A
(en)
1919-11-06
Improvements in Repeating or Amplifying Systems, particularly applicable for Telephony.
US1749851A
(en)
1930-03-11
Circuit controller
US1615044A
(en)
1927-01-18
Transformer circuit
AT86330B
(en)
1921-11-25
Circuit arrangement of external speech circuits of telephone systems with microphonic speech amplifiers.
US1721572A
(en)
1929-07-23
Carrier-current system superposed on side circuit of phantom system
GB145578A
(en)
1920-11-04
Improvements in electric repeaters for telephony
DE436247C
(en)
1926-10-28
Circuit arrangement for electrical telecommunications systems
US1314828A
(en)
1919-09-02
Harold s
None