GB2114307B - Measurement of direct current - Google Patents

Measurement of direct current

Info

Publication number
GB2114307B
GB2114307B GB08301938A GB8301938A GB2114307B GB 2114307 B GB2114307 B GB 2114307B GB 08301938 A GB08301938 A GB 08301938A GB 8301938 A GB8301938 A GB 8301938A GB 2114307 B GB2114307 B GB 2114307B
Authority
GB
United Kingdom
Prior art keywords
measurement
direct current
direct
current
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
GB08301938A
Other versions
GB2114307A (en
GB8301938D0 (en
Inventor
Arthur Clifford Gidlow
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.)
British Telecommunications PLC
Original Assignee
British Telecommunications 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 British Telecommunications PLC filed Critical British Telecommunications PLC
Priority to GB08301938A priority Critical patent/GB2114307B/en
Publication of GB8301938D0 publication Critical patent/GB8301938D0/en
Publication of GB2114307A publication Critical patent/GB2114307A/en
Application granted granted Critical
Publication of GB2114307B publication Critical patent/GB2114307B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/38—Signalling arrangements; Manipulation of signalling currents using combinations of direct currents of different amplitudes or polarities over line conductors or combination of line conductors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/10—Measuring sum, difference or ratio

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
GB08301938A 1982-02-01 1983-01-25 Measurement of direct current Expired GB2114307B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08301938A GB2114307B (en) 1982-02-01 1983-01-25 Measurement of direct current

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8202815 1982-02-01
GB08301938A GB2114307B (en) 1982-02-01 1983-01-25 Measurement of direct current

Publications (3)

Publication Number Publication Date
GB8301938D0 GB8301938D0 (en) 1983-02-23
GB2114307A GB2114307A (en) 1983-08-17
GB2114307B true GB2114307B (en) 1985-09-04

Family

ID=26281863

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08301938A Expired GB2114307B (en) 1982-02-01 1983-01-25 Measurement of direct current

Country Status (1)

Country Link
GB (1) GB2114307B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3827758C2 (en) * 1988-08-16 1996-08-29 Bayerische Motoren Werke Ag Device for monitoring a predetermined current in at least one electrical conductor

Also Published As

Publication number Publication date
GB2114307A (en) 1983-08-17
GB8301938D0 (en) 1983-02-23

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee