GB1099804A - Improvements in or relating to direct current transformers - Google Patents

Improvements in or relating to direct current transformers

Info

Publication number
GB1099804A
GB1099804A GB955664A GB955664A GB1099804A GB 1099804 A GB1099804 A GB 1099804A GB 955664 A GB955664 A GB 955664A GB 955664 A GB955664 A GB 955664A GB 1099804 A GB1099804 A GB 1099804A
Authority
GB
United Kingdom
Prior art keywords
component
diode
load
current
march
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
GB955664A
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.)
NARAIN GHURIOMAL HINGORANI
Original Assignee
NARAIN GHURIOMAL HINGORANI
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 NARAIN GHURIOMAL HINGORANI filed Critical NARAIN GHURIOMAL HINGORANI
Priority to GB955664A priority Critical patent/GB1099804A/en
Publication of GB1099804A publication Critical patent/GB1099804A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01R19/18—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using conversion of DC into AC, e.g. with choppers
    • G01R19/20—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using conversion of DC into AC, e.g. with choppers using transductors, i.e. a magnetic core transducer the saturation of which is cyclically reversed by an AC source on the secondary side

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transformers For Measuring Instruments (AREA)

Abstract

1,099,804. Controlled non linear inductors. N. G. HINGORANI. March 3, 1965 [March 6, 1964], No. 9556/64. Heading H3B. [Also in Division G1] A D.C. transformer arrangement comprises a pair of saturable cores C1, C2 through whose primary windings a D.C. current <SP>1</SP>d to be measured flows. The two secondary windings are supplied with an alternating e.m.f. via a balanced diode arrangement D1-D4 in such a way that the two e.m.f.'s at the secondary windings are out of phase with respect to each other. A component Dz is connected in series with the output load R L which may be an ammeter. Dz has the effect of providing a definite minimum voltage drop against the flow of current through the output load. Furthermore a resistor R 1 is connected to the diode arrangement in a balanced manner to the load. This resistor has a value less than the load resistance R 1 plus the minimum voltage drop of the component Dz divided by the core secondary current required to just saturate the core. The component Dz may be a diode, Zener diode or battery.
GB955664A 1964-03-06 1964-03-06 Improvements in or relating to direct current transformers Expired GB1099804A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB955664A GB1099804A (en) 1964-03-06 1964-03-06 Improvements in or relating to direct current transformers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB955664A GB1099804A (en) 1964-03-06 1964-03-06 Improvements in or relating to direct current transformers

Publications (1)

Publication Number Publication Date
GB1099804A true GB1099804A (en) 1968-01-17

Family

ID=9874271

Family Applications (1)

Application Number Title Priority Date Filing Date
GB955664A Expired GB1099804A (en) 1964-03-06 1964-03-06 Improvements in or relating to direct current transformers

Country Status (1)

Country Link
GB (1) GB1099804A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108802476A (en) * 2018-06-13 2018-11-13 贵州电网有限责任公司 A kind of DC current transformer and its current test method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108802476A (en) * 2018-06-13 2018-11-13 贵州电网有限责任公司 A kind of DC current transformer and its current test method

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