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GB624706A - Electrical testing systems - Google Patents

Electrical testing systems

Info

Publication number
GB624706A
GB624706A GB21015/46A GB2101546A GB624706A GB 624706 A GB624706 A GB 624706A GB 21015/46 A GB21015/46 A GB 21015/46A GB 2101546 A GB2101546 A GB 2101546A GB 624706 A GB624706 A GB 624706A
Authority
GB
United Kingdom
Prior art keywords
line
lines
generator
quarter
length
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
GB21015/46A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables 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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB624706A publication Critical patent/GB624706A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/04—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant in circuits having distributed constants, e.g. having very long conductors or involving high frequencies

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

624,706. Impedance measurements. STAN. DARD TELEPHONES &. CABLES, Ltd. July 13, 1946, No. 21015. Convention date, Aug. 21, 1945. [Class 37] To measure the length of a transmission line 1, Fig. 1, a tunable impedance 2 is connected across the input and the assembly fed with H.F. oscillations from a generator 5, a null indicator 7 indicating when lines 1, 2 are in parallel resonance; the displacement of the bar 3 from a quarter wavelength position is a direct measure of the length of line 1. As applied to an open-ended coaxial line, the generator 15, Fig. 2, feeds the line 11 and an adjustable short 12, and a null indicator 17 is connected to a line 16 an odd number of quarter wave. lengths long connected to the inputs of lines 11, 12 to show when line 12 has been adjusted to parallel resonance with line 11. When.thelines under test are short-circuited at their outer ends, the indicators 7, 17 are connected over lines an even number of quarter wavelengths long.
GB21015/46A 1945-08-21 1946-07-13 Electrical testing systems Expired GB624706A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US624706XA 1945-08-21 1945-08-21

Publications (1)

Publication Number Publication Date
GB624706A true GB624706A (en) 1949-06-15

Family

ID=22042702

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21015/46A Expired GB624706A (en) 1945-08-21 1946-07-13 Electrical testing systems

Country Status (1)

Country Link
GB (1) GB624706A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2821806A1 (en) * 2013-07-01 2015-01-07 Hamilton Sundstrand Corporation Resonance based cable compensation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2821806A1 (en) * 2013-07-01 2015-01-07 Hamilton Sundstrand Corporation Resonance based cable compensation

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