GB564185A - Means for reproducing a direct current - Google Patents

Means for reproducing a direct current

Info

Publication number
GB564185A
GB564185A GB9520/43A GB952043A GB564185A GB 564185 A GB564185 A GB 564185A GB 9520/43 A GB9520/43 A GB 9520/43A GB 952043 A GB952043 A GB 952043A GB 564185 A GB564185 A GB 564185A
Authority
GB
United Kingdom
Prior art keywords
transductor
transformer
direct current
current
circuit
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
GB9520/43A
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
Allmanna Svenska Elektriska AB
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 ASEA AB, Allmanna Svenska Elektriska AB filed Critical ASEA AB
Publication of GB564185A publication Critical patent/GB564185A/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

564,185. Non-contact-making relays. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. June 15, 1943, No. 9520. Convention date, June 16, 1942. [Class 40 (iv)] [Also in Group XXXVI] in an arrangement for amplifying or reproducing direct current in a circuit 1 by means of a transductor 2, the alternating current of which is rectified by a rectifier 5, the direct current circuit 1 is coupled to the output circuit by a transformer 3 in order to balance out irregularities caused by imperfections in the transductor and rectifier. These irregularities occur mainly when the transductor is saturated, and the transformer 3 should, therefore, not be saturated at such times. To ensure this, an additional winding fed with constant direct current may be provided on the transductor or transformer or both, or the transformer may be constructed by suitable choice of turns or core material or otherwise so that it requires greater current for saturation than does the transductor. The output current is fed to a measuring instrument or control apparatus 6. Specification 558,269 is referred to.
GB9520/43A 1942-06-16 1943-06-15 Means for reproducing a direct current Expired GB564185A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE564185X 1942-06-16

Publications (1)

Publication Number Publication Date
GB564185A true GB564185A (en) 1944-09-25

Family

ID=20312098

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9520/43A Expired GB564185A (en) 1942-06-16 1943-06-15 Means for reproducing a direct current

Country Status (1)

Country Link
GB (1) GB564185A (en)

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