GB971903A - Improvements relating to phase discriminating detectors - Google Patents

Improvements relating to phase discriminating detectors

Info

Publication number
GB971903A
GB971903A GB253260A GB253260A GB971903A GB 971903 A GB971903 A GB 971903A GB 253260 A GB253260 A GB 253260A GB 253260 A GB253260 A GB 253260A GB 971903 A GB971903 A GB 971903A
Authority
GB
United Kingdom
Prior art keywords
diode
point
resistor
phase
jan
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
GB253260A
Inventor
Gordon Sidney Penc Scantlebury
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB253260A priority Critical patent/GB971903A/en
Publication of GB971903A publication Critical patent/GB971903A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/22—Homodyne or synchrodyne circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

971,903. Phase detectors. ELECTRIC & MUSICAL INDUSTRIES Ltd. Jan. 23, 1961 [Jan. 23, 1960], No. 2532/60. Heading H3A. Signals differing in phase are fed to points a, b of a resistor/diode network via capacitors 3, 4, the diode 6 maintaining the points monotonically above earth potential and the diode 5 (phased for A > B) maintaining the potential at a monotonically below that at b. At one point in each cycle, # 1 , the curves touch when the diode 5 conducts, the mean level M at the point a being shown to depend on the phase difference # and being taken via filtering means 10, 11 to detector means 9. An arrangement is analysed (Fig. 8, not shown) in which resistor 1 is double resistor 2 and the output is arranged to pass through a null point for # = 120 degrees. Alternatively, c may be a tapping point on a calibrated potentiometer comprising 1 and 2.
GB253260A 1960-01-23 1960-01-23 Improvements relating to phase discriminating detectors Expired GB971903A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB253260A GB971903A (en) 1960-01-23 1960-01-23 Improvements relating to phase discriminating detectors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB253260A GB971903A (en) 1960-01-23 1960-01-23 Improvements relating to phase discriminating detectors

Publications (1)

Publication Number Publication Date
GB971903A true GB971903A (en) 1964-10-07

Family

ID=9741232

Family Applications (1)

Application Number Title Priority Date Filing Date
GB253260A Expired GB971903A (en) 1960-01-23 1960-01-23 Improvements relating to phase discriminating detectors

Country Status (1)

Country Link
GB (1) GB971903A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0023735A1 (en) * 1979-07-25 1981-02-11 Philips Electronics Uk Limited Circuit arrangement for comparing two alternating voltages of the same frequency

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0023735A1 (en) * 1979-07-25 1981-02-11 Philips Electronics Uk Limited Circuit arrangement for comparing two alternating voltages of the same frequency

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