GB986099A - Improvements in or relating to variable-impedance electric networks - Google Patents

Improvements in or relating to variable-impedance electric networks

Info

Publication number
GB986099A
GB986099A GB2448061A GB2448061A GB986099A GB 986099 A GB986099 A GB 986099A GB 2448061 A GB2448061 A GB 2448061A GB 2448061 A GB2448061 A GB 2448061A GB 986099 A GB986099 A GB 986099A
Authority
GB
United Kingdom
Prior art keywords
impedance
variable
bridge
relating
rectifiers
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
GB2448061A
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.)
CHARLES BOWDEN
General Electric Co PLC
Original Assignee
CHARLES BOWDEN
General Electric Co 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 CHARLES BOWDEN, General Electric Co PLC filed Critical CHARLES BOWDEN
Priority to GB2448061A priority Critical patent/GB986099A/en
Publication of GB986099A publication Critical patent/GB986099A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
    • H03G1/0052—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using diodes

Landscapes

  • Control Of Electrical Variables (AREA)

Abstract

986,099. Volume control circuits. GENERAL ELECTRIC CO. Ltd., and C. BOWDEN. July 13, 1961 [April 13, 1960], No. 24480/61. Divided out of 986,098. Heading H4R. A variable-impedance network comprises a bridge circuit 4 of rectifiers, the impedance of the bridge across one diagonal being controlled by a voltage applied across the other diagonal. The rectifiers are chosen to give a logarithmic variation of current with voltage in the working range. The A.C. signal whose amplitude is to be controlled, is applied to the primary of transformer 2 and the output is derived at the secondary of transformer 6. A maximum value for the impedance of the circuit may be determined by suitably limiting the amplitude of the control signal or by providing a suitable shunt path around the bridge.
GB2448061A 1960-04-13 1960-04-13 Improvements in or relating to variable-impedance electric networks Expired GB986099A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2448061A GB986099A (en) 1960-04-13 1960-04-13 Improvements in or relating to variable-impedance electric networks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2448061A GB986099A (en) 1960-04-13 1960-04-13 Improvements in or relating to variable-impedance electric networks

Publications (1)

Publication Number Publication Date
GB986099A true GB986099A (en) 1965-03-17

Family

ID=10212351

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2448061A Expired GB986099A (en) 1960-04-13 1960-04-13 Improvements in or relating to variable-impedance electric networks

Country Status (1)

Country Link
GB (1) GB986099A (en)

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