GB287927A - Improvements in systems for producing high frequency electric oscillations - Google Patents

Improvements in systems for producing high frequency electric oscillations

Info

Publication number
GB287927A
GB287927A GB8881/28A GB888128A GB287927A GB 287927 A GB287927 A GB 287927A GB 8881/28 A GB8881/28 A GB 8881/28A GB 888128 A GB888128 A GB 888128A GB 287927 A GB287927 A GB 287927A
Authority
GB
United Kingdom
Prior art keywords
circuit
generators
high frequency
anodes
grids
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
GB8881/28A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB287927A publication Critical patent/GB287927A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/10—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being vacuum tube

Abstract

287,927. British Thomson-Houston Co., Ltd., (Assignees of Alexanderson, E. F. W.). March 30, 1927, [Convention date]. Thermionic generators; keying systems. - A generator particularly for ultra-high frequency comprises two or more parallel connected sets of thermionic generators each consisting of a pair of push-pull connected valves. The Figure shows two pairs of valves 5, 6 and 17, 18 respectively, the filament current is supplied through transformer 27 and the anode circuits are supplied from terminals 1, the anodes being earthed. The filaments 7, 8 are interconnected by the inductive circuit 9 and the grids by the oscillatory circuit 13, 14. To maintain a comparatively low voltage on the anodes while the valve is active, a reactor 29 is conectned in the anode supply circuit. The grids 11, 12 are connected to the cathode circuit through a key 31 and a grid bias element 32, and simultaneous control of the two generators is effected by the master key 36. In a modification, Fig. 2 (not shown), each oscillator supplies current to a separate antenna instead of as shown to a common antenna 2.
GB8881/28A 1927-03-30 1928-03-23 Improvements in systems for producing high frequency electric oscillations Expired GB287927A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US287927XA 1927-03-30 1927-03-30

Publications (1)

Publication Number Publication Date
GB287927A true GB287927A (en) 1929-05-16

Family

ID=21845456

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8881/28A Expired GB287927A (en) 1927-03-30 1928-03-23 Improvements in systems for producing high frequency electric oscillations

Country Status (1)

Country Link
GB (1) GB287927A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE748785C (en) * 1936-01-29 1944-11-09 Magnetron arrangement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE748785C (en) * 1936-01-29 1944-11-09 Magnetron arrangement

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