GB855566A - Improvements relating to electrical frequency meters - Google Patents

Improvements relating to electrical frequency meters

Info

Publication number
GB855566A
GB855566A GB2530456A GB2530456A GB855566A GB 855566 A GB855566 A GB 855566A GB 2530456 A GB2530456 A GB 2530456A GB 2530456 A GB2530456 A GB 2530456A GB 855566 A GB855566 A GB 855566A
Authority
GB
United Kingdom
Prior art keywords
frequency
winding
transformer
meter
aug
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
GB2530456A
Inventor
William Gregson
William Frederick Sydne Turner
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.)
Ferranti International PLC
Original Assignee
Ferranti 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 Ferranti PLC filed Critical Ferranti PLC
Priority to GB2530456A priority Critical patent/GB855566A/en
Publication of GB855566A publication Critical patent/GB855566A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

855,566. Frequency detectors. FERRANTI Ltd. Aug. 15, 1957 [Aug. 18, 1956], No. 25304/56. Class 40(5). A frequency meter includes a transformer 10 having a primary winding 13 and two secondary windings 11, 12, an inductance 14 in series with winding 13, a variable resistor 16 being included in line with winding 11 and an inductor 19 with winding 12 the rectified output of windings 11, 12 across resistor 18, 21 respectively being combined in opposition in a meter 22, the arrangement being that an input voltage of amplitude sufficient to saturate the transformer will cause an output across secondary 11 and therefore a current in 18 which is dependent upon frequency while the current in 21 will be independent of frequency due to the opposing resistances 19, 12 but dependent only on any amplitude variations due to incomplete saturation of the transformer, the reading on meter 22 being thus directly proportional to frequency and corrected for any amplitude variation which may occur.
GB2530456A 1956-08-18 1956-08-18 Improvements relating to electrical frequency meters Expired GB855566A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2530456A GB855566A (en) 1956-08-18 1956-08-18 Improvements relating to electrical frequency meters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2530456A GB855566A (en) 1956-08-18 1956-08-18 Improvements relating to electrical frequency meters

Publications (1)

Publication Number Publication Date
GB855566A true GB855566A (en) 1960-12-07

Family

ID=10225537

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2530456A Expired GB855566A (en) 1956-08-18 1956-08-18 Improvements relating to electrical frequency meters

Country Status (1)

Country Link
GB (1) GB855566A (en)

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