GB723990A - Improvements in and relating to frequency meters - Google Patents

Improvements in and relating to frequency meters

Info

Publication number
GB723990A
GB723990A GB291852A GB291852A GB723990A GB 723990 A GB723990 A GB 723990A GB 291852 A GB291852 A GB 291852A GB 291852 A GB291852 A GB 291852A GB 723990 A GB723990 A GB 723990A
Authority
GB
United Kingdom
Prior art keywords
frequency
relating
average current
frequency meters
meter
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
GB291852A
Inventor
William Simm Melville
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 Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB291852A priority Critical patent/GB723990A/en
Publication of GB723990A publication Critical patent/GB723990A/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 Current Or Voltage (AREA)

Abstract

723,990. Frequency meters. BRITISH THOMSON-HOUSTON CO., Ltd. Jan. 27, 1953 [Feb. 4, 1952], No. 2918/52. Class 37. A frequency meter consists of a saturable capacitor D which is charged to saturation and fully discharged every half-cycle through a bridge rectifier circuit R in the diagonal of which is a D.C. meter M indicating the rectified average current through the condenser. Since the saturation charge is independent of frequency and waveform this average current is directly proportional to frequency.
GB291852A 1952-02-04 1952-02-04 Improvements in and relating to frequency meters Expired GB723990A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB291852A GB723990A (en) 1952-02-04 1952-02-04 Improvements in and relating to frequency meters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB291852A GB723990A (en) 1952-02-04 1952-02-04 Improvements in and relating to frequency meters

Publications (1)

Publication Number Publication Date
GB723990A true GB723990A (en) 1955-02-16

Family

ID=9748526

Family Applications (1)

Application Number Title Priority Date Filing Date
GB291852A Expired GB723990A (en) 1952-02-04 1952-02-04 Improvements in and relating to frequency meters

Country Status (1)

Country Link
GB (1) GB723990A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3221249A (en) * 1962-07-19 1965-11-30 Texas Instruments Inc Frequency measuring apparatus including dual rectifier means and transistor translating means

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3221249A (en) * 1962-07-19 1965-11-30 Texas Instruments Inc Frequency measuring apparatus including dual rectifier means and transistor translating means

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