JPS5773920A - Slitless-type dc transformer - Google Patents

Slitless-type dc transformer

Info

Publication number
JPS5773920A
JPS5773920A JP55150148A JP15014880A JPS5773920A JP S5773920 A JPS5773920 A JP S5773920A JP 55150148 A JP55150148 A JP 55150148A JP 15014880 A JP15014880 A JP 15014880A JP S5773920 A JPS5773920 A JP S5773920A
Authority
JP
Japan
Prior art keywords
deltav
resistor
negative
generated
transformer
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.)
Granted
Application number
JP55150148A
Other languages
Japanese (ja)
Other versions
JPS6139724B2 (en
Inventor
Hiroki Okumura
Shigenori Kinoshita
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
Fuji Electric Manufacturing Co Ltd
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 Fuji Electric Co Ltd, Fuji Electric Manufacturing Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP55150148A priority Critical patent/JPS5773920A/en
Publication of JPS5773920A publication Critical patent/JPS5773920A/en
Publication of JPS6139724B2 publication Critical patent/JPS6139724B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/40—Instruments transformers for dc

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE:To cancel an error cause by exciting current by a method wherein a series circuit consisting of a diode and a resistor is provided in parallel with a resistor for detecting the output of a conventional DC transformer and the output is taken out from the former resistor. CONSTITUTION:When the direct current I1 of the primary windings of the transformers T1 and T2 equals zero, DELTAV equaling IeR3 is generated at the terminal voltage V1 of the resistor R3 by exciting current Ie generated by an AC voltage source e, but it is canceled by the diode D5. When I1 equals 100%, DELTAV is generated in two directions which are positive and negative to a true value and the positive DELTAV can be canceled by D5, while the negative DELTAV lowers slightly below the true value. In the ordinary range of measurement, however, negative V turns very small since the setting period of one iron core is considerably longer than the resetting period of the other, and thus there is almost no hindrance to the practical use of the device. By this constitution, the small-sized slitless-type DC transformer having improved performance and reliability is obtained only with the addition of a few circuits to conventional circuits.
JP55150148A 1980-10-28 1980-10-28 Slitless-type dc transformer Granted JPS5773920A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55150148A JPS5773920A (en) 1980-10-28 1980-10-28 Slitless-type dc transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55150148A JPS5773920A (en) 1980-10-28 1980-10-28 Slitless-type dc transformer

Publications (2)

Publication Number Publication Date
JPS5773920A true JPS5773920A (en) 1982-05-08
JPS6139724B2 JPS6139724B2 (en) 1986-09-05

Family

ID=15490539

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55150148A Granted JPS5773920A (en) 1980-10-28 1980-10-28 Slitless-type dc transformer

Country Status (1)

Country Link
JP (1) JPS5773920A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53141322U (en) * 1977-04-15 1978-11-08

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53141322U (en) * 1977-04-15 1978-11-08

Also Published As

Publication number Publication date
JPS6139724B2 (en) 1986-09-05

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