GB1513126A - Signal translation circuits - Google Patents

Signal translation circuits

Info

Publication number
GB1513126A
GB1513126A GB449974A GB449974A GB1513126A GB 1513126 A GB1513126 A GB 1513126A GB 449974 A GB449974 A GB 449974A GB 449974 A GB449974 A GB 449974A GB 1513126 A GB1513126 A GB 1513126A
Authority
GB
United Kingdom
Prior art keywords
sample
steel
core loss
core
multiplier
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
GB449974A
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 Steel Corp
Original Assignee
British Steel Corp
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 Steel Corp filed Critical British Steel Corp
Priority to GB449974A priority Critical patent/GB1513126A/en
Publication of GB1513126A publication Critical patent/GB1513126A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices

Abstract

1513126 Measure core loss in steel samples BRITISH STEEL CORP 30 April 1975 [31 Jan 1974] 4499/74 Heading G1N [Also in Division H4] In a method of testing the core loss of a sample of steel, the steel is formed into an Epstein square core having a primary winding 4 coupled to a secondary 8, connected with an air flux mutual inductor 12 to compensate for flux transfer between the primary and secondary windings in the absence of core 2. The core loss is determined by feeding signals representative of the current through primary winding 4 and the voltage across secondary winding 8 to a multiplier 20. Since the current through the sample will vary considerably from sample to sample an automatically variable sensitivity control circuit 28 is provided which has its gain adjusted in steps, see Div. H3-5, to maintain the signal level applied to the multiplier in a predetermined range. Core loss is displayed on the analogue or digital voltmeter 26.
GB449974A 1975-04-30 1975-04-30 Signal translation circuits Expired GB1513126A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB449974A GB1513126A (en) 1975-04-30 1975-04-30 Signal translation circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB449974A GB1513126A (en) 1975-04-30 1975-04-30 Signal translation circuits

Publications (1)

Publication Number Publication Date
GB1513126A true GB1513126A (en) 1978-06-07

Family

ID=9778350

Family Applications (1)

Application Number Title Priority Date Filing Date
GB449974A Expired GB1513126A (en) 1975-04-30 1975-04-30 Signal translation circuits

Country Status (1)

Country Link
GB (1) GB1513126A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0077266A1 (en) * 1981-10-09 1983-04-20 American Microsystems, Incorporated Switched capacitor automatic gain control loop
GB2209444A (en) * 1987-07-21 1989-05-10 Plessey Co Plc An amplifier with improved dynamic range
CN106959425A (en) * 2016-01-11 2017-07-18 国网智能电网研究院 A kind of electrical sheet total Loss Ratio measuring method under D.C. magnetic biasing operating mode
CN114121459A (en) * 2021-11-17 2022-03-01 国网冀北电力有限公司计量中心 Electronic compensation device and method for current transformer

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0077266A1 (en) * 1981-10-09 1983-04-20 American Microsystems, Incorporated Switched capacitor automatic gain control loop
US4441082A (en) * 1981-10-09 1984-04-03 American Microsystems, Inc. Switched capacitor automatic gain control loop
GB2209444A (en) * 1987-07-21 1989-05-10 Plessey Co Plc An amplifier with improved dynamic range
US4924190A (en) * 1987-07-21 1990-05-08 Plessey Overseas Limited Amplifiers
GB2209444B (en) * 1987-07-21 1992-03-18 Plessey Co Plc Improvements in or relating to amplifiers
CN106959425A (en) * 2016-01-11 2017-07-18 国网智能电网研究院 A kind of electrical sheet total Loss Ratio measuring method under D.C. magnetic biasing operating mode
CN114121459A (en) * 2021-11-17 2022-03-01 国网冀北电力有限公司计量中心 Electronic compensation device and method for current transformer
CN114121459B (en) * 2021-11-17 2024-01-30 国网冀北电力有限公司计量中心 Electronic compensation device and method for current transformer

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Legal Events

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