GB545343A - Amplification of electric waves by space discharge devices - Google Patents

Amplification of electric waves by space discharge devices

Info

Publication number
GB545343A
GB545343A GB5354/41A GB535441A GB545343A GB 545343 A GB545343 A GB 545343A GB 5354/41 A GB5354/41 A GB 5354/41A GB 535441 A GB535441 A GB 535441A GB 545343 A GB545343 A GB 545343A
Authority
GB
United Kingdom
Prior art keywords
resistance
anode
frequencies
shunted
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
Application number
GB5354/41A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables 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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB545343A publication Critical patent/GB545343A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03F1/42—Modifications of amplifiers to extend the bandwidth
    • H03F1/48—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers
    • H03F1/50—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers with tubes only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

545,343. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd. April 25, 1941, No. 5354. Convention date, April 26, 1940. [Class 40 (v)] An interstage coupling for a wide frequency range comprises two resistances R1, R2 in series between anode and cathode with the resistance R1 nearer to the anode shunted by an inductance L and the other resistance R2 shunted by a condenser C1 and two blocking condensers one C5 between the anode and the succeeding grid for frequencies in the upper part of the range and the other C6 between the junction of the anode resistances R1, R2 and a tapping on the grid resistance and having a low reactance for the lower frequencies of the range. Fig. 1 shows an arrangement in which resistance R1 is constituted by an M-derived law-pass filter 12 terminated in a resistance 11 and is such that L/C1 =R1, R2. Preferably the inductance L is connected in shunt to resistance 11 so as not to increase the inherent self capacity C0. The screen voltage is taken from the point a so that it is at substantially anode potential to secure high gain. Fig. 3 shows a modification of the arrangement to avoid degenerative feedback at low frequencies when the self biasing combination R3, C3 is used. Compensation is effected by so proportioning the decoupling resistance R4 and condenser C4 that C4, R4 = C3, R3. The Specification gives quantitative data for an amplifier operating from 40 cycles to 3 megacycles.
GB5354/41A 1940-04-26 1941-04-25 Amplification of electric waves by space discharge devices Expired GB545343A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US331728A US2270364A (en) 1940-04-26 1940-04-26 Amplification of electric waves

Publications (1)

Publication Number Publication Date
GB545343A true GB545343A (en) 1942-05-20

Family

ID=23295128

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5354/41A Expired GB545343A (en) 1940-04-26 1941-04-25 Amplification of electric waves by space discharge devices

Country Status (2)

Country Link
US (1) US2270364A (en)
GB (1) GB545343A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2475344A (en) * 1947-01-04 1949-07-05 Hazeltine Research Inc Constant resistance coupling arrangement

Also Published As

Publication number Publication date
US2270364A (en) 1942-01-20

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