GB503501A - Improvements relating to discriminator networks for radio receivers employing automatic fine tuning - Google Patents

Improvements relating to discriminator networks for radio receivers employing automatic fine tuning

Info

Publication number
GB503501A
GB503501A GB2703137A GB2703137A GB503501A GB 503501 A GB503501 A GB 503501A GB 2703137 A GB2703137 A GB 2703137A GB 2703137 A GB2703137 A GB 2703137A GB 503501 A GB503501 A GB 503501A
Authority
GB
United Kingdom
Prior art keywords
coils
fine tuning
improvements relating
radio receivers
coupled
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
GB2703137A
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.)
EK Cole Ltd
Original Assignee
EK Cole 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 EK Cole Ltd filed Critical EK Cole Ltd
Priority to GB2703137A priority Critical patent/GB503501A/en
Publication of GB503501A publication Critical patent/GB503501A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant

Landscapes

  • Circuits Of Receivers In General (AREA)

Abstract

503,501. Automatic tuning correction. COLE, Ltd., E. K., and BRADFIELD, G. Oct. 6, 1937, No. 27031. [Class 40 (v)] A frequency discriminator network of the phase - variation type comprises a circuit A tuned to the I.F. of a superheterodyne receiver and coupled to a circuit B tuned to the same frequency, and also coupled to coils C D which are connected differentially to a double-diode rectifier V2. The common point of coils C D is connected td circuit B over a blocking condenser 3. The coils A B C D may be mounted in the same screening can, A C and D being on one former or core and B on a second former or core. In a modification, coils C D may be coupled to B by a further coil and they may be jointly tuned to the I.F. by a parallel condenser.
GB2703137A 1937-10-06 1937-10-06 Improvements relating to discriminator networks for radio receivers employing automatic fine tuning Expired GB503501A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2703137A GB503501A (en) 1937-10-06 1937-10-06 Improvements relating to discriminator networks for radio receivers employing automatic fine tuning

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2703137A GB503501A (en) 1937-10-06 1937-10-06 Improvements relating to discriminator networks for radio receivers employing automatic fine tuning

Publications (1)

Publication Number Publication Date
GB503501A true GB503501A (en) 1939-04-06

Family

ID=10253033

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2703137A Expired GB503501A (en) 1937-10-06 1937-10-06 Improvements relating to discriminator networks for radio receivers employing automatic fine tuning

Country Status (1)

Country Link
GB (1) GB503501A (en)

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