US1819845A - Thermionic amplifier and oscillation generator - Google Patents

Thermionic amplifier and oscillation generator Download PDF

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Publication number
US1819845A
US1819845A US123360A US12336026A US1819845A US 1819845 A US1819845 A US 1819845A US 123360 A US123360 A US 123360A US 12336026 A US12336026 A US 12336026A US 1819845 A US1819845 A US 1819845A
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United States
Prior art keywords
tube
anode
grid
inductance
cathode
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 - Lifetime
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US123360A
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English (en)
Inventor
Round Henry Joseph
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RCA Corp
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RCA Corp
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Filing date
Publication date
Application filed by RCA Corp filed Critical RCA Corp
Application granted granted Critical
Publication of US1819845A publication Critical patent/US1819845A/en
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Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
    • H03F1/14—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means
    • H03F1/16—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means in discharge-tube amplifiers

Definitions

  • the object of the present invention is" to provide am amplifier in wh-ich' tlie eifect of reaction and undesired coupling, due to the inter-electrode capacity of thermionic valves, is avoided.
  • a thermionic tube having anode, cathode and grid electrodes, an input circuit including an inductance associated with the grid and cathode of said tube, an output circuit connected between said anode and said cathode,cand an inductance consisting of'two astatic wound portions, one of which is connected in series in the output circuit ofsaid tube, the other portion of said inductance being connected through a capacity to the grid of said tube whereby the anode to gridcapacity ofsaid tube is compensated and magnetic coupling between the input and output circuits of said valve is prevented.
  • a plurality of thermionic tubes each having anode, cathode and grid electrodes, an input circuit including an inductance associated with the grid and cathode of one of said tubes, an inductance consisting of two astatic wound portions one of which is connected between the anode and cathode of said tube, the other portion of said inductance being connected to thegrid of said tube, means for coupling the anode electrode of said last named tube to the grid electrode of the other of said tubes including a coupling condenser, a resistance connected be-,
  • an output circuit including an inductance having two portions one of which is connected-between the anode and cathode of said tube, capacity means for connecting the other portion of said inductance to the grid electrode of said tube, asecond thermionic tube having anode, cathode and grid electrodes, a capacity connecting the anode electrode of said first named tube to the grid electrode of said second named tube, a resistance connected between the grid and cathode of said 'lastnamed tube, an output circuit comprising a portion of an astatic wound inductance connected between the anode and cathode of said last named tube and capacity means connecting another portion of said inductance to the grid electrode of said last named tube.
  • thermionic tubes each having anode, cathode and grid eleceach tube, alternate ones' of the said inductances having thetwo portions wound so as to be astatic to prevent electromagnetic coupling between the stages, capacitive means connecting the anode electrode of each of said tubes to the grid electrode of the following tube, and a resistance connection between the grid and cathode of each of said last named tubes.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
US123360A 1925-07-20 1926-07-19 Thermionic amplifier and oscillation generator Expired - Lifetime US1819845A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB18520/25A GB260036A (en) 1925-07-20 1925-07-20 Improvements in or relating to thermionic amplifiers and the like

Publications (1)

Publication Number Publication Date
US1819845A true US1819845A (en) 1931-08-18

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ID=10113831

Family Applications (1)

Application Number Title Priority Date Filing Date
US123360A Expired - Lifetime US1819845A (en) 1925-07-20 1926-07-19 Thermionic amplifier and oscillation generator

Country Status (5)

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US (1) US1819845A (enrdf_load_stackoverflow)
BE (1) BE335662A (enrdf_load_stackoverflow)
DE (1) DE493274C (enrdf_load_stackoverflow)
GB (1) GB260036A (enrdf_load_stackoverflow)
NL (1) NL19683C (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
GB260036A (en) 1926-10-20
BE335662A (enrdf_load_stackoverflow)
DE493274C (de) 1930-03-05
NL19683C (enrdf_load_stackoverflow)

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