GB488565A - Improvements in or relating to electrical attenuating networks - Google Patents

Improvements in or relating to electrical attenuating networks

Info

Publication number
GB488565A
GB488565A GB61737A GB61737A GB488565A GB 488565 A GB488565 A GB 488565A GB 61737 A GB61737 A GB 61737A GB 61737 A GB61737 A GB 61737A GB 488565 A GB488565 A GB 488565A
Authority
GB
United Kingdom
Prior art keywords
network
networks
phase
resistors
shunt
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
GB61737A
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
Priority to NL85637D priority Critical patent/NL85637B/xx
Priority to NL51892D priority patent/NL51892C/xx
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB61737A priority patent/GB488565A/en
Priority to FR831557D priority patent/FR831557A/en
Publication of GB488565A publication Critical patent/GB488565A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/46—Monitoring; Testing
    • 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
    • G01R27/28—Measuring attenuation, gain, phase shift or derived characteristics of electric four pole networks, i.e. two-port networks; Measuring transient response
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

488,565. Sets of resistances. STANDARD TELEPHONES & CABLES, Ltd., and BARNARD. R. M. Jan. 8, 1937. No. 617. [Class 37] [Also in Group XL] An attenuator for use in tests and measurements of phase-shift on high-frequency systems comprises two networks producing small but similar phase-shifts and one of the networks having negligible attenuation, means being provided for inserting either of the networks into the transmission line to prevent a change of phase when the other network is removed. Series branches of the attenuating network are inductive wire wound resistors, the shunt resistors being of carbon composition type and non-inductive but capacitative. Compensating networks with similar shunt and series characteristics are provided and these introduce a phase-shift equal to that introduced by the attenuating resistor network. The attenuator comprises resistors Z<1>, 2Z<2> mounted on insulators 2, 3 and provided with connecting strips 4, the compensator network consisting of conductor cable 6 with the inner conductor forming connecting strips 7, either network being inserted by switch C. The incoming and outgoing leads are constituted by cable conductors 8, and the common terminal of the shunt resistors 2Z<2> is connected to the outer conductor of network 6 at 12. The mounting frames 1 may be assembled in a common container provided with screening plates between the different networks.
GB61737A 1937-01-08 1937-01-08 Improvements in or relating to electrical attenuating networks Expired GB488565A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL85637D NL85637B (en) 1937-01-08
NL51892D NL51892C (en) 1937-01-08
GB61737A GB488565A (en) 1937-01-08 1937-01-08 Improvements in or relating to electrical attenuating networks
FR831557D FR831557A (en) 1937-01-08 1937-12-31 Electrical networks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB61737A GB488565A (en) 1937-01-08 1937-01-08 Improvements in or relating to electrical attenuating networks

Publications (1)

Publication Number Publication Date
GB488565A true GB488565A (en) 1938-07-08

Family

ID=9707504

Family Applications (1)

Application Number Title Priority Date Filing Date
GB61737A Expired GB488565A (en) 1937-01-08 1937-01-08 Improvements in or relating to electrical attenuating networks

Country Status (3)

Country Link
FR (1) FR831557A (en)
GB (1) GB488565A (en)
NL (2) NL85637B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3474356A (en) * 1965-10-11 1969-10-21 Wandel Uber Goltermann Eningen Damping network

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3474356A (en) * 1965-10-11 1969-10-21 Wandel Uber Goltermann Eningen Damping network

Also Published As

Publication number Publication date
NL85637B (en)
NL51892C (en)
FR831557A (en) 1938-09-08

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