GB401795A - Improvements in or relating to electric signalling systems - Google Patents

Improvements in or relating to electric signalling systems

Info

Publication number
GB401795A
GB401795A GB1836032A GB1836032A GB401795A GB 401795 A GB401795 A GB 401795A GB 1836032 A GB1836032 A GB 1836032A GB 1836032 A GB1836032 A GB 1836032A GB 401795 A GB401795 A GB 401795A
Authority
GB
United Kingdom
Prior art keywords
relating
circuits
general electric
signalling systems
electric signalling
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
Application number
GB1836032A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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.)
Filing date
Publication date
Application filed by General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB1836032A priority Critical patent/GB401795A/en
Publication of GB401795A publication Critical patent/GB401795A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/52—Modulators in which carrier or one sideband is wholly or partially suppressed
    • H03C1/54—Balanced modulators, e.g. bridge type, ring type or double balanced type
    • 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

Landscapes

  • Electric Vacuum Cleaner (AREA)

Abstract

401,795. Valve modulating circuits. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, NOBLE, H. R., and WESTELL, E. P. L., c/o General Electric Co., Stoke, Coventry. June 29, 1932, No. 18360. [Class 40 (v).] A modulating system comprises a carrier source 1 coupled in opposite phase to the plate circuits of a twophase rectifier such as two triode rectifying valves 3, 4. The grid voltage is varied by the signal applied through a transformer 12. The modulated output is taken from the plate circuits by the coupling 8.
GB1836032A 1932-06-29 1932-06-29 Improvements in or relating to electric signalling systems Expired GB401795A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1836032A GB401795A (en) 1932-06-29 1932-06-29 Improvements in or relating to electric signalling systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1836032A GB401795A (en) 1932-06-29 1932-06-29 Improvements in or relating to electric signalling systems

Publications (1)

Publication Number Publication Date
GB401795A true GB401795A (en) 1933-11-23

Family

ID=10111120

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1836032A Expired GB401795A (en) 1932-06-29 1932-06-29 Improvements in or relating to electric signalling systems

Country Status (1)

Country Link
GB (1) GB401795A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1004681B (en) * 1954-06-09 1957-03-21 Philips Nv Push-pull modulator with transistors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1004681B (en) * 1954-06-09 1957-03-21 Philips Nv Push-pull modulator with transistors

Similar Documents

Publication Publication Date Title
GB401795A (en) Improvements in or relating to electric signalling systems
GB669364A (en) Improvements in or relating to electric pulse modulation systems
GB453732A (en) Improvements in carrier wave modulating systems
GB483576A (en) Improvements in or relating to radio and other modulated carrier wave transmitters
GB451237A (en) Improvements in or relating to carrier wave transmitting apparatus
GB612426A (en) Improvements in or relating to electric circuits for deriving the rate of change of amplitude of a modulated alternating electric quantity
GB503443A (en) Modulating arrangements for high frequency signalling systems
GB487162A (en) Improvements in or relating to radio transmission systems
GB495162A (en) Improvements in and relating to alternating current signalling systems
GB515106A (en) Improvements in or relating to modulator carrier wave transmitters
GB472431A (en) Improvements in or relating to electric signalling systems
GB435201A (en) Improvements in modulating and demodulating apparatus for a.c. signalling systems
GB228428A (en) Improvements in and relating to wireless systems
GB530576A (en) Improvements in receiving apparatus for alternating current telegraphy
GB411628A (en) Improvements in or relating to automatic volume control in electrical signalling systems
GB521559A (en) Improvements relating to carrier transmission systems
GB503698A (en) Improvements in coupling systems for wireless aerials
GB584046A (en) Improvements in modulation circuits and application thereof to radio beacons
GB619289A (en) Improvements relating to modulators of electric waves
GB417061A (en) An automatic system for switching on wireless sets
GB419108A (en) Improvements in or relating to roses for watering cans and the like
GB493050A (en) Improvements in or relating to methods of amplifying electrical signals
GB675439A (en) Improvements in or relating to phase modulators for electric carrier waves
GB377763A (en) Improvements relating to radio signalling systems
GB348540A (en) Method of changing the "characteristics" of wireless valves to suit various requirements in wireless transmission and receiving systems