GB811167A - Amplifier for direct currents or for very low frequency currents - Google Patents

Amplifier for direct currents or for very low frequency currents

Info

Publication number
GB811167A
GB811167A GB2006455A GB2006455A GB811167A GB 811167 A GB811167 A GB 811167A GB 2006455 A GB2006455 A GB 2006455A GB 2006455 A GB2006455 A GB 2006455A GB 811167 A GB811167 A GB 811167A
Authority
GB
United Kingdom
Prior art keywords
amplifier
resistors
anode
output
voltages
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
GB2006455A
Inventor
Georges Rapp
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.)
S I R E L E C
Original Assignee
S I R E L E C
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 S I R E L E C filed Critical S I R E L E C
Priority to GB2006455A priority Critical patent/GB811167A/en
Publication of GB811167A publication Critical patent/GB811167A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/52—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using discharge tubes in series with the load as final control devices
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/14—Control of position or direction using feedback using an analogue comparing device

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Electromagnetism (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Amplifiers (AREA)

Abstract

811,167. Valve amplifying circuits; limiters. S.I.R.E.L.E.C. July 11, 1955, No. 20064/55. Class 40 (6). In a push-pull directcurrent amplifier the balance is improved by using a number of valves, 4-7 and 4<SP>1</SP>-7<SP>1</SP> respectively, connected in parallel in each side; all valves are taken from the same production batch with the object of averaging out individual variations in characteristics. The output of a source 1 is fed through a resistance 2 to a condenser 3, from which balanced voltages are applied to the amplifier by means of an earthed centretap comprising condensers 8, 9 and leak resistors 11, 12. Negative feedback is applied to each side of the amplifier by means of adjustable cathode resistors 13, 14 and a balancing potentiometer 15, the slider of which is connected to the negative supply line. Each screen-grid is fed through its own dropping resistor from a stabilized power supply 16-19. The anode loads comprise resistors 26, 26<SP>1</SP> and a balancing potentiometer 25, the slider of which is connected to the anode power supply 20-24. The output terminals 28, 28<SP>1</SP> are connected to the valve anodes via resistors 35, 35<SP>1</SP> respectively, across which stabilized power supplies 29-34 and 29<SP>1</SP>-34<SP>1</SP> respectively produce fixed voltages which balance out the standing positive voltages at the respective anodes. The output is limited by means of a pair of diodes 36, 36<SP>1</SP> which are cross-coupled between each anode and the opposite output terminal.
GB2006455A 1955-07-11 1955-07-11 Amplifier for direct currents or for very low frequency currents Expired GB811167A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2006455A GB811167A (en) 1955-07-11 1955-07-11 Amplifier for direct currents or for very low frequency currents

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2006455A GB811167A (en) 1955-07-11 1955-07-11 Amplifier for direct currents or for very low frequency currents

Publications (1)

Publication Number Publication Date
GB811167A true GB811167A (en) 1959-04-02

Family

ID=10139775

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2006455A Expired GB811167A (en) 1955-07-11 1955-07-11 Amplifier for direct currents or for very low frequency currents

Country Status (1)

Country Link
GB (1) GB811167A (en)

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