GB568684A - Improvements relating to frequency-changers for superheterodyne radio receivers and the like - Google Patents

Improvements relating to frequency-changers for superheterodyne radio receivers and the like

Info

Publication number
GB568684A
GB568684A GB16624/43A GB1662443A GB568684A GB 568684 A GB568684 A GB 568684A GB 16624/43 A GB16624/43 A GB 16624/43A GB 1662443 A GB1662443 A GB 1662443A GB 568684 A GB568684 A GB 568684A
Authority
GB
United Kingdom
Prior art keywords
grid
output
anodes
electrode
control
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
GB16624/43A
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.)
AC Cossor Ltd
Original Assignee
AC Cossor Ltd
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 AC Cossor Ltd filed Critical AC Cossor Ltd
Priority to GB16624/43A priority Critical patent/GB568684A/en
Priority to US555029A priority patent/US2504626A/en
Publication of GB568684A publication Critical patent/GB568684A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/06—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes
    • H03D7/10—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes the signals to be mixed being applied between different pairs of electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/02—Tubes with a single discharge path

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Particle Accelerators (AREA)

Abstract

568,684. Thermionic valves and circuits therefor. COSSOR, Ltd., A. C., and BELL, D. A. Oct. 11, 1943, No. 16624. [Classes 39 (i) and 40 (v)] In a frequency-changer having two output electrodes and a first control electrode system which controls the sum of the currents drawn by the output electrodes, and a second control electrode system which controls the distribution between the two output electrodes, the switch-over from one output electrode to the other occurs in a small fraction of the cycle. As applied to a triode-hexode valve, Fig. 4 (not shown), the output is taken between the hexode anode and screen grid, which latter is aligned with the first control grid and the local oscillator is modified to produce a substantially square wave-form by a resistance inserted. in series with the oscillator grid lead. Fig. 1 shows an arrangement in which the second control electrode 5 operates by beam deflection. In this arrangement, the signal is applied to controlling grid 2 and a focusing electrode 3 is provided before the accelerator grid 4 which is preferably aligned with the grid 2. The deflector electrode, 5 co-operates with anodes 7, 9 to form a local oscillator circuit, while the output is taken from the anodes 6, 8. Fig. 2 shows the valve construction, the anodes 7; 9 forming the local oscillator, being arranged over extensions of the electrodes 3, 5 so that the accelerator grid 4 and control grid 2 do not affect the oscillator section.
GB16624/43A 1943-10-11 1943-10-11 Improvements relating to frequency-changers for superheterodyne radio receivers and the like Expired GB568684A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB16624/43A GB568684A (en) 1943-10-11 1943-10-11 Improvements relating to frequency-changers for superheterodyne radio receivers and the like
US555029A US2504626A (en) 1943-10-11 1944-09-20 Frequency changer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB16624/43A GB568684A (en) 1943-10-11 1943-10-11 Improvements relating to frequency-changers for superheterodyne radio receivers and the like

Publications (1)

Publication Number Publication Date
GB568684A true GB568684A (en) 1945-04-16

Family

ID=10080668

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16624/43A Expired GB568684A (en) 1943-10-11 1943-10-11 Improvements relating to frequency-changers for superheterodyne radio receivers and the like

Country Status (2)

Country Link
US (1) US2504626A (en)
GB (1) GB568684A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE509676A (en) * 1951-03-05
NL88018C (en) * 1951-10-13
US3028559A (en) * 1956-11-30 1962-04-03 Zenith Radio Corp Limiter-frequency detector
US3009111A (en) * 1957-01-02 1961-11-14 Rca Corp Signal translating system

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2073454A (en) * 1933-03-01 1937-03-09 Rca Corp Pentode heterodyne detector
US2024979A (en) * 1934-03-23 1935-12-17 Gen Electric Cathode ray apparatus
US2107333A (en) * 1935-08-14 1938-02-08 Philips Nv Electron discharge device
GB487627A (en) * 1937-05-04 1938-06-23 M O Valve Co Ltd Improvements in thermionic multi-grid valves
US2190515A (en) * 1938-07-15 1940-02-13 Gen Electric Ultra short wave device
US2225330A (en) * 1939-04-22 1940-12-17 Gen Electric Electron beam tube
FR865749A (en) * 1939-05-25 1941-05-31 Vacuum Science Products Ltd Electron discharge device
US2270791A (en) * 1939-07-13 1942-01-20 Rca Corp Oscillator-modulator circuit
US2271716A (en) * 1939-08-18 1942-02-03 Rca Corp Electron discharge device
US2325664A (en) * 1940-04-09 1943-08-03 Cohn Henny Electron discharge device
US2269688A (en) * 1941-02-24 1942-01-13 Radio Patents Corp Electronic modulator

Also Published As

Publication number Publication date
US2504626A (en) 1950-04-18

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