US1876645A - Circuit arrangement for thermionic amplifying tubes coupled by transformers - Google Patents

Circuit arrangement for thermionic amplifying tubes coupled by transformers Download PDF

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Publication number
US1876645A
US1876645A US484003A US48400330A US1876645A US 1876645 A US1876645 A US 1876645A US 484003 A US484003 A US 484003A US 48400330 A US48400330 A US 48400330A US 1876645 A US1876645 A US 1876645A
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United States
Prior art keywords
transformers
circuit arrangement
transformer
tubes coupled
inductance
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
Application number
US484003A
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English (en)
Inventor
Dyksterhuis Popko Reinder
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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
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Publication of US1876645A publication Critical patent/US1876645A/en
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/02—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with tubes only

Definitions

  • the invention affords a means of amplifying a wide range of frequencies even at a higher ratio of transformation, said means consisting in that a self-induction is cqn; nected in series and a capacity in parallel with the primary winding of the trans former, the values of these elements being so chosen that the requisite extension of the evenly amplified region is obtained.
  • a second condenser may be provided which is inserted between the ends of the primary winding and the said self-induction, which ends are not directly connected.
  • Figure 1 shows an embodiment in which R designates the internal resistance of the triode 1.
  • L and L respectively denote the primary and secondary windings of the transformer by which the plate circuit of the triode is coupled with a next tube not shown.
  • L and C designates an inductance coil connected in series with the primary winding
  • L C denotes a condenser coupled in parallel with L
  • This fall may still be rendered steeper, however, in the manner indicated in Figure 2, viz. by inserting another condenser G between those ends of the self-induction L and the primary winding L which are not directly connected together.
  • This condenser may have approximately the same capacity as the condenser C.
  • this condenser prevents regeneration as far as the high frequencies are concerned.
  • Means for amplifying a Wide range of frequencies substantially evenly throughout the range comprising an electron discharge device having an input circuit and an output circuit, said output circuit including the primary Winding of a transformer having a high ratio of transformation, a utilizing circuit including the secondary Winding of said transformer, an inductance in said output circuit in series With said primary Winding and a capacity shunted across said primary winding, said condenser and said inductance having values such that the resonance frequency determined by them exceeds the leakage resonance frequency of the transformer, and the ratio between the ohmic resistance and the inductance occurring in the circuit constituted by the said inductance, said capacity and the internal resistance of said electron discharge device is less than unity for the resonance frequency.
  • Means for amplifying a Wide range of frequencies substantially evenly over the entire range comprising an electron discharge device having an input circuit and an output circuit, said output circuit including the primary Winding of a coupling transformer, a utilizing circuit including the secondary of said transformer, an inductance in said output circuit in series With said primary and a capacity shunted across said primary of such values that the resonance frequency determined by them exceeds the leakage resonance frequency of the transformer, and the ratio between the ohmic resistance and the reactance occurring in the circuit constituted by said inductance, capacity and the internal resistance of said electron discharge device is less than unity for the resonance frequency.
  • an electrondischarge device having input and output circuits, said output circuit including the primary Wind ing of a coupling transformer, a utilizing circuit including the secondary of said transformer, an inductance in said output circuit, a capacity shunted across said inductance and said primary winding, a second capacity shunted across said primary Winding, said elements having such values that the ratio between the ohmic resistance and thereactance occurring in the circuit constituted by said inductance, said capacities and'the internal resistance of the electron discharge device is less than unity at a frequency greater than the leakage resonance frequency of said transformer.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Hydrogenated Pyridines (AREA)
  • Amplifiers (AREA)
US484003A 1929-09-28 1930-09-24 Circuit arrangement for thermionic amplifying tubes coupled by transformers Expired - Lifetime US1876645A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL347085X 1929-09-28

Publications (1)

Publication Number Publication Date
US1876645A true US1876645A (en) 1932-09-13

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ID=19784923

Family Applications (1)

Application Number Title Priority Date Filing Date
US484003A Expired - Lifetime US1876645A (en) 1929-09-28 1930-09-24 Circuit arrangement for thermionic amplifying tubes coupled by transformers

Country Status (3)

Country Link
US (1) US1876645A (fr)
FR (1) FR699122A (fr)
GB (1) GB347085A (fr)

Also Published As

Publication number Publication date
GB347085A (en) 1931-04-23
FR699122A (fr) 1931-02-10

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