GB644774A - Improvements in and relating to deflection circuits for cathode ray tubes - Google Patents

Improvements in and relating to deflection circuits for cathode ray tubes

Info

Publication number
GB644774A
GB644774A GB2282646A GB2282646A GB644774A GB 644774 A GB644774 A GB 644774A GB 2282646 A GB2282646 A GB 2282646A GB 2282646 A GB2282646 A GB 2282646A GB 644774 A GB644774 A GB 644774A
Authority
GB
United Kingdom
Prior art keywords
voltage
resistor
output
relating
cathode ray
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
GB2282646A
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.)
EDWARD REGINALD THOMAS
General Electric Co PLC
Original Assignee
EDWARD REGINALD THOMAS
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 EDWARD REGINALD THOMAS, General Electric Co PLC filed Critical EDWARD REGINALD THOMAS
Priority to GB2282646A priority Critical patent/GB644774A/en
Publication of GB644774A publication Critical patent/GB644774A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G06G7/24—Arrangements for performing computing operations, e.g. operational amplifiers for evaluating logarithmic or exponential functions, e.g. hyperbolic functions

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)
  • Amplifiers (AREA)

Abstract

644,774. Logarithmic circuits. GENERAL ELECTRIC CO., Ltd., and THOMAS, E. R. July 31, 1946, No. 22826. Drawings to Specification. [Class 40 (vi)] A circuit for producing an output voltage proportional to the logarithm of a given alternating input voltage comprises a pentode or other high impedance valve to the input of which the given voltage is applied and having a resistor in its output circuit whose value varies inversely with the voltage applied to it. In the circuit described, the given voltage is fed to the grid of the valve and the resistor which is a disc of silicon carbide is connected through a blocking capacitor between the anode and cathode, the output being taken from across the resistor.
GB2282646A 1946-07-31 1946-07-31 Improvements in and relating to deflection circuits for cathode ray tubes Expired GB644774A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2282646A GB644774A (en) 1946-07-31 1946-07-31 Improvements in and relating to deflection circuits for cathode ray tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2282646A GB644774A (en) 1946-07-31 1946-07-31 Improvements in and relating to deflection circuits for cathode ray tubes

Publications (1)

Publication Number Publication Date
GB644774A true GB644774A (en) 1950-10-18

Family

ID=10185664

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2282646A Expired GB644774A (en) 1946-07-31 1946-07-31 Improvements in and relating to deflection circuits for cathode ray tubes

Country Status (1)

Country Link
GB (1) GB644774A (en)

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