GB542257A - Improvements in valve operated variable reactors - Google Patents

Improvements in valve operated variable reactors

Info

Publication number
GB542257A
GB542257A GB14740/40A GB1474040A GB542257A GB 542257 A GB542257 A GB 542257A GB 14740/40 A GB14740/40 A GB 14740/40A GB 1474040 A GB1474040 A GB 1474040A GB 542257 A GB542257 A GB 542257A
Authority
GB
United Kingdom
Prior art keywords
ratio
valve
network
valve operated
operated variable
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
GB14740/40A
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 GB14740/40A priority Critical patent/GB542257A/en
Priority to US409913A priority patent/US2312982A/en
Publication of GB542257A publication Critical patent/GB542257A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H03J7/042—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant with reactance tube
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/10—Angle modulation by means of variable impedance
    • H03C3/12—Angle modulation by means of variable impedance by means of a variable reactive element
    • H03C3/14—Angle modulation by means of variable impedance by means of a variable reactive element simulated by circuit comprising active element with at least three electrodes, e.g. reactance-tube circuit

Landscapes

  • Indication Of The Valve Opening Or Closing Status (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

542,257. Wireless receiving apparatus. GENERAL ELECTRIC CO., Ltd., and STENNING, L. C. Sept. 30, 1940, No. 14740. [Class 40 (v)] In a variable re-actor of the kind varied by adjusting the mutual conductance of a thermionic valve the ratio of the potentiometer P in the valve input is substantially real and the output admittance and transfer ratio of the network A in the valve output is approximately a pure imaginary. The ratio may be an imaginary owing to the mutual inductance M in the network or alternatively to a condenser coupling between the upper ends of the coils L 1 , L 2 . The Specification gives a mathematical analysis of the circuit.
GB14740/40A 1940-09-30 1940-09-30 Improvements in valve operated variable reactors Expired GB542257A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB14740/40A GB542257A (en) 1940-09-30 1940-09-30 Improvements in valve operated variable reactors
US409913A US2312982A (en) 1940-09-30 1941-09-06 Valve operated variable reactor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB14740/40A GB542257A (en) 1940-09-30 1940-09-30 Improvements in valve operated variable reactors

Publications (1)

Publication Number Publication Date
GB542257A true GB542257A (en) 1942-01-01

Family

ID=10046637

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14740/40A Expired GB542257A (en) 1940-09-30 1940-09-30 Improvements in valve operated variable reactors

Country Status (2)

Country Link
US (1) US2312982A (en)
GB (1) GB542257A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2527535A (en) * 1945-12-14 1950-10-31 Jr Robert A Emmett Electronic phase shifter
US2632050A (en) * 1950-04-03 1953-03-17 Avco Mfg Corp Keyed automatic frequency control system for television receivers
US2650347A (en) * 1950-08-25 1953-08-25 Polytechnic Res And Dev Compan Impedance measuring bridge
US3040224A (en) * 1957-08-13 1962-06-19 Westinghouse Electric Corp Switching circuit for controlling shaker table motor

Also Published As

Publication number Publication date
US2312982A (en) 1943-03-02

Similar Documents

Publication Publication Date Title
GB554092A (en) Electric wave transmission network
GB542257A (en) Improvements in valve operated variable reactors
GB399408A (en) Generator of relaxation oscillations of controlled frequency
GB498843A (en) Improvements in or relating to electron multiplier discharge devices
GB707534A (en) Electronic vacuum tube
GB542000A (en) Improvements in and relating to electric wave transmission devices
GB503722A (en) Amplifier with negative feedback
JPS5531337A (en) Resistive terminator
GB413724A (en) Improvements in or relating to superheterodyne wireless receiving sets
GB453400A (en) Improvements in or relating to thermionic amplifiers
GB365306A (en) Improvements in and connected with tuning devices for use with wireless receiving apparatus
GB536615A (en) Improvements in or relating to variable volume control networks
GB546048A (en) Improved method of introducing barium into a closed space
GB335639A (en) Improvements in thermionic amplifiers for use in conjunction with photo-electric devices
GB539370A (en) Improvements in wireless receiving sets comprising dial lamps
GB765970A (en) Improvements in and relating to arrangements for the neutralisation of the inter-electrode capacities of thermionic valves
GB626143A (en) Improvements in or relating to coupling circuits for amplifiers
GB514285A (en) Improvements in or relating to tone-controlling impedance networks
GB529956A (en) System of coupling transmission circuits
GB333971A (en) Improvements in or relating to high-frequency thermionic valve amplifiers
ES200265A1 (en) An electronic tube for short and very short waves (Machine-translation by Google Translate, not legally binding)
GB554896A (en) Improvements in alternating-current bridge circuits
GB311356A (en) Improvements in and relating to wireless receiving apparatus
GB484980A (en) Electric wave amplifying systems
GB555601A (en) Improvements in high frequency amplifiers utilising electron discharge devices