GB582018A - Improvements relating to thermionic valve circuits - Google Patents

Improvements relating to thermionic valve circuits

Info

Publication number
GB582018A
GB582018A GB905444A GB905444A GB582018A GB 582018 A GB582018 A GB 582018A GB 905444 A GB905444 A GB 905444A GB 905444 A GB905444 A GB 905444A GB 582018 A GB582018 A GB 582018A
Authority
GB
United Kingdom
Prior art keywords
valve
resistance
amplifier
output
grid
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
GB905444A
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.)
AC Cossor Ltd
Original Assignee
AC Cossor 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 AC Cossor Ltd filed Critical AC Cossor Ltd
Priority to GB905444A priority Critical patent/GB582018A/en
Priority to US592417A priority patent/US2563245A/en
Priority to US597049A priority patent/US2609448A/en
Publication of GB582018A publication Critical patent/GB582018A/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
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/14—Arrangements for performing computing operations, e.g. operational amplifiers for addition or subtraction 
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/18—Arrangements for performing computing operations, e.g. operational amplifiers for integration or differentiation; for forming integrals
    • G06G7/182—Arrangements for performing computing operations, e.g. operational amplifiers for integration or differentiation; for forming integrals using magnetic elements

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

582,018. Thermionic valve circuits. COSSOR, Ltd., A. C., and JOFEH, L. May 12, 1944, No. 9054. [Class 40 (v)] [Also in Group XIX] In a thermionic valve circuit for obtaining a voltage relative to a fixed potential, equal to the voltage between two points each of varying potential, one of the points is connected to the input of a phase reversing amplifier and the other to the output of the amplifier via a resistance tapped to produce an output voltage equivalent to an amplifier gain of approximately unity. The figure shows valve amplifiers 10, 11 with cathode follower 'outputs, whose difference it is desired to obtain, connected to either side of the resistance 20, one side of which is connected to the grid of valve 12 and the other to the anode of valve 12 through the resistance 23, 24. The output is tapped off resistance 24. To set up, resistance 20 is short circuited and the grid of valve 11 earthed. An alternating supply is connected to the grid of valve 10 and the tapping on resistor 24 adjusted for minimum output. The gain of the amplifier is then approximately unity and with the short circuit removed from resistance 20, the output 25 will be proportional to the voltage across resistance 20, when input voltages are applied at terminals 15 and 16. The method is applied in Fig. 2 (not shown) to eliminate supply ripple from the output of an amplifier. The anode load of the amplifier valves takes the place of the resistance 20, one end being coupled by a condenser to the grid and the other through a tapped resistance to the anode of a second valve, the tapping again being arranged for approximately unity gain of the second valve. The time constant of the coupling is increased by the use of a negative feed-back resistor in the cathode of the second valve, so as to improve the low frequency response.
GB905444A 1944-05-12 1944-05-12 Improvements relating to thermionic valve circuits Expired GB582018A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB905444A GB582018A (en) 1944-05-12 1944-05-12 Improvements relating to thermionic valve circuits
US592417A US2563245A (en) 1944-05-12 1945-05-07 Voltage combining circuits
US597049A US2609448A (en) 1944-05-12 1945-06-01 Electrical differentiating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB905444A GB582018A (en) 1944-05-12 1944-05-12 Improvements relating to thermionic valve circuits

Publications (1)

Publication Number Publication Date
GB582018A true GB582018A (en) 1946-11-01

Family

ID=9864506

Family Applications (1)

Application Number Title Priority Date Filing Date
GB905444A Expired GB582018A (en) 1944-05-12 1944-05-12 Improvements relating to thermionic valve circuits

Country Status (1)

Country Link
GB (1) GB582018A (en)

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