GB954030A - Improvements in or relating to attenuators - Google Patents

Improvements in or relating to attenuators

Info

Publication number
GB954030A
GB954030A GB2740060A GB2740060A GB954030A GB 954030 A GB954030 A GB 954030A GB 2740060 A GB2740060 A GB 2740060A GB 2740060 A GB2740060 A GB 2740060A GB 954030 A GB954030 A GB 954030A
Authority
GB
United Kingdom
Prior art keywords
valve
supply line
aug
positive
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
GB2740060A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB954030A publication Critical patent/GB954030A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/24—Frequency- independent attenuators
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/50—Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower
    • H03F3/52—Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower with tubes only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

954,030. Valve amplifying circuits. PHILIPS ELECTRICAL INDUSTRIES Ltd. Aug. 8, 1960 [Aug. 11, 1959], No. 27400/60. Heading H3W. A variable attenuating circuit comprises a cathode follower 2 connected to the positive supply line, with a cathode load consisting of a series resistor 14, a second valve 12, and another series resistor 13, of the same ohmic value as resistor 14, connected to the negative supply line. The valve 12 has an output potentiometer P in parallel with it and its grid connected to a point of constant potential. When a voltage is connected to the positive and negative supply line, the supply tends to remain electrically balanced about the anode of the second valve irrespective of supply voltage changes.
GB2740060A 1959-08-11 1960-08-08 Improvements in or relating to attenuators Expired GB954030A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL242226 1959-08-11

Publications (1)

Publication Number Publication Date
GB954030A true GB954030A (en) 1964-04-02

Family

ID=19751868

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2740060A Expired GB954030A (en) 1959-08-11 1960-08-08 Improvements in or relating to attenuators

Country Status (1)

Country Link
GB (1) GB954030A (en)

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