[go: up one dir, main page]

FR1183426A - Transformateur de fréquence - Google Patents

Transformateur de fréquence

Info

Publication number
FR1183426A
FR1183426A FR1183426DA FR1183426A FR 1183426 A FR1183426 A FR 1183426A FR 1183426D A FR1183426D A FR 1183426DA FR 1183426 A FR1183426 A FR 1183426A
Authority
FR
France
Prior art keywords
frequency transformer
transformer
frequency
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
Other languages
English (en)
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.)
BAE Systems Aerospace Inc
Original Assignee
Hazeltine Corp
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 Hazeltine Corp filed Critical Hazeltine Corp
Application granted granted Critical
Publication of FR1183426A publication Critical patent/FR1183426A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • H03G3/3063—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver using at least one transistor as controlling device, the transistor being used as a variable impedance device
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/12—Transference of modulation from one carrier to another, e.g. frequency-changing by means of semiconductor devices having more than two electrodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Superheterodyne Receivers (AREA)
  • Amplifiers (AREA)
  • Logic Circuits (AREA)
FR1183426D 1956-09-27 1957-09-26 Transformateur de fréquence Expired FR1183426A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US612555A US2853602A (en) 1956-09-27 1956-09-27 Frequency-converter system having mixer and local oscillator gain controlled in opposite sense

Publications (1)

Publication Number Publication Date
FR1183426A true FR1183426A (fr) 1959-07-07

Family

ID=24453665

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1183426D Expired FR1183426A (fr) 1956-09-27 1957-09-26 Transformateur de fréquence

Country Status (3)

Country Link
US (1) US2853602A (fr)
FR (1) FR1183426A (fr)
GB (1) GB828486A (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2937340A (en) * 1956-11-30 1960-05-17 Rca Corp Automatic gain control system for signal receivers
US2927204A (en) * 1957-01-22 1960-03-01 Hazeltine Research Inc Multiple unit transistor circuit with means for maintaining common zone at a fixed reference potential
US2991359A (en) * 1957-10-16 1961-07-04 Philips Corp Radio receiving arrangement
US3078420A (en) * 1958-09-05 1963-02-19 Avco Mfg Corp Automatic ferrite loop antenna loading
NL262639A (fr) * 1960-03-22
DE1135528B (de) * 1960-05-07 1962-08-30 Philips Nv Schaltung zur Frequenzstabilisierung des Oszillators eines Transistor-UEberlagerungsempfaengers
US3141135A (en) * 1962-05-11 1964-07-14 Westinghouse Electric Corp Semiconductive oscillator-mixer device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB421786A (en) * 1933-08-03 1934-12-31 Philips Nv Improvements in superheterodyne receiving sets
NL84061C (fr) * 1948-06-26
US2713117A (en) * 1949-06-18 1955-07-12 Sylvania Electric Prod Heterodyne converter

Also Published As

Publication number Publication date
US2853602A (en) 1958-09-23
GB828486A (en) 1960-02-17

Similar Documents

Publication Publication Date Title
CH359171A (de) Hochfrequenzübertrager
FR1181506A (fr) Magnétrons
FR1183426A (fr) Transformateur de fréquence
FR1185361A (fr) Discriminateur de fréquence
FR1169957A (fr) Magnétron
CH326478A (fr) Wassingue
CH341566A (de) Streufeldtransformator
FR1165184A (fr) Transformateur miniature
FR1169637A (fr) Ferrite améliorée
FR1175190A (fr) Changeur de fréquence
FR1188481A (fr) Transformateur électromagnétique
FR1174627A (fr) Ferrite
FR1166098A (fr) Convertisseur de fréquence statique
FI28460A (fi) Frekvensberoende relä
AT197439B (de) Frequenzdetektor
ES57126Y (es) Batería de cocina
FR1168798A (fr) Discriminateurs de fréquence
FR69885E (fr) Magnétron
ES53976Y (es) Gotón desmontable
CH335817A (de) Porta-abito con stiracalzoni
ES54771Y (es) Nueva barrerilla-soporte de aplicación general
FR1151253A (fr) Doubleur statique de fréquence
ES54789Y (es) Escalpelo
ES55120Y (es) Nueva llave-mordaza
ES57408Y (es) Nueva caja-envase