GB1235080A - Circuit arrangement for the phase correct demodulation of amplitude modulated carrier frequency measuring signals - Google Patents

Circuit arrangement for the phase correct demodulation of amplitude modulated carrier frequency measuring signals

Info

Publication number
GB1235080A
GB1235080A GB858470A GB858470A GB1235080A GB 1235080 A GB1235080 A GB 1235080A GB 858470 A GB858470 A GB 858470A GB 858470 A GB858470 A GB 858470A GB 1235080 A GB1235080 A GB 1235080A
Authority
GB
United Kingdom
Prior art keywords
transistor
carrier frequency
circuit arrangement
modulated carrier
amplitude modulated
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
GB858470A
Inventor
Stephan Felber
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.)
WERKZEUGMASCHINEN KOM FRITZ HE
Original Assignee
WERKZEUGMASCHINEN KOM FRITZ HE
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 WERKZEUGMASCHINEN KOM FRITZ HE filed Critical WERKZEUGMASCHINEN KOM FRITZ HE
Priority to GB858470A priority Critical patent/GB1235080A/en
Publication of GB1235080A publication Critical patent/GB1235080A/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
    • H03D1/229—Homodyne or synchrodyne circuits using at least a two emittor-coupled differential pair of transistors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

1,235,080. Phase sensitive detectors. WERKZEUGMASCHINENKOMBINAT " FRITZ HECKERT " VEB. 23 Feb., 1970, No. 8584/70. Heading H3A. A phase-sensitive demodulator comprises a pair of transistors 6, 7 connected as a long-tail pair with a third transistor 10 as a common emitter load, the modulated signal being applied to the base of transistor 6, the base of transistor 7 being A.C. coupled to earth, and the reference signal being coupled to the base of transistor 10. The outputs from the collectors of transistors 6, 7 are coupled to voltage doubler circuits 14, 15, 16 and 18, 19, 20 which may be, as shown, oppositely poled to provide a non-symmetrical output signal at terminal 25. Alternatively, Fig. 2 (not shown), the voltage doubler circuits may be similarly poled to produce a balanced output.
GB858470A 1970-02-23 1970-02-23 Circuit arrangement for the phase correct demodulation of amplitude modulated carrier frequency measuring signals Expired GB1235080A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB858470A GB1235080A (en) 1970-02-23 1970-02-23 Circuit arrangement for the phase correct demodulation of amplitude modulated carrier frequency measuring signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB858470A GB1235080A (en) 1970-02-23 1970-02-23 Circuit arrangement for the phase correct demodulation of amplitude modulated carrier frequency measuring signals

Publications (1)

Publication Number Publication Date
GB1235080A true GB1235080A (en) 1971-06-09

Family

ID=9855289

Family Applications (1)

Application Number Title Priority Date Filing Date
GB858470A Expired GB1235080A (en) 1970-02-23 1970-02-23 Circuit arrangement for the phase correct demodulation of amplitude modulated carrier frequency measuring signals

Country Status (1)

Country Link
GB (1) GB1235080A (en)

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