GB586783A - Improvements in d.c. amplifiers - Google Patents

Improvements in d.c. amplifiers

Info

Publication number
GB586783A
GB586783A GB2291344A GB2291344A GB586783A GB 586783 A GB586783 A GB 586783A GB 2291344 A GB2291344 A GB 2291344A GB 2291344 A GB2291344 A GB 2291344A GB 586783 A GB586783 A GB 586783A
Authority
GB
United Kingdom
Prior art keywords
valve
resistance
amplifier
resistor
coupling resistor
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
GB2291344A
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.)
WILLIAM WILCOX CHANDLER
Original Assignee
WILLIAM WILCOX CHANDLER
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 WILLIAM WILCOX CHANDLER filed Critical WILLIAM WILCOX CHANDLER
Priority to GB2291344A priority Critical patent/GB586783A/en
Publication of GB586783A publication Critical patent/GB586783A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/34—DC amplifiers in which all stages are DC-coupled
    • H03F3/36—DC amplifiers in which all stages are DC-coupled with tubes only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

586,783. Valve amplifying circuits. FLOWERS, T. H., and CHANDLER, W. W. Nov. 17, 1944, No. 22913. [Class 40 (v)] A D.C. amplifier is provided with a valve having a high A.C. resistance in order to maintain the voltage drop across the coupling resistor substantially constant. The Figure shows a two-stage amplifier in which the current through the coupling resistor 31'is maintained constant by providing a pentode valve 3, in series with it. Suitable electrode potentials for the valves are obtained from tappings on the H.T. source, these being so adjusted, that when there is zero input the output lead L2 is at earth potential. In a modification screen of valve 3 may be supplied from the full H.T. positive through a voltage-dropping resistance, the cathode resistor of valve 3 may also be omitted.
GB2291344A 1944-11-17 1944-11-17 Improvements in d.c. amplifiers Expired GB586783A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2291344A GB586783A (en) 1944-11-17 1944-11-17 Improvements in d.c. amplifiers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2291344A GB586783A (en) 1944-11-17 1944-11-17 Improvements in d.c. amplifiers

Publications (1)

Publication Number Publication Date
GB586783A true GB586783A (en) 1947-03-31

Family

ID=10187089

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2291344A Expired GB586783A (en) 1944-11-17 1944-11-17 Improvements in d.c. amplifiers

Country Status (1)

Country Link
GB (1) GB586783A (en)

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