FR781630A - Quartz selection wave reception device - Google Patents

Quartz selection wave reception device

Info

Publication number
FR781630A
FR781630A FR781630DA FR781630A FR 781630 A FR781630 A FR 781630A FR 781630D A FR781630D A FR 781630DA FR 781630 A FR781630 A FR 781630A
Authority
FR
France
Prior art keywords
quartz
reception device
wave reception
selection wave
selection
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
French (fr)
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.)
Loewe Opta GmbH
Original Assignee
Loewe Opta GmbH
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 Loewe Opta GmbH filed Critical Loewe Opta GmbH
Application granted granted Critical
Publication of FR781630A publication Critical patent/FR781630A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/4446—IF amplifier circuits specially adapted for B&W TV
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/545—Filters comprising resonators of piezoelectric or electrostrictive material including active elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/1638—Special circuits to enhance selectivity of receivers not otherwise provided for

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Superheterodyne Receivers (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Geophysics And Detection Of Objects (AREA)
FR781630D 1933-11-24 1934-11-21 Quartz selection wave reception device Expired FR781630A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE449470X 1933-11-24

Publications (1)

Publication Number Publication Date
FR781630A true FR781630A (en) 1935-05-18

Family

ID=6538279

Family Applications (1)

Application Number Title Priority Date Filing Date
FR781630D Expired FR781630A (en) 1933-11-24 1934-11-21 Quartz selection wave reception device

Country Status (3)

Country Link
US (1) US2107394A (en)
FR (1) FR781630A (en)
GB (1) GB449470A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2495708A (en) * 1944-03-24 1950-01-31 Rupert H Draeger Electrically controlled flicker fusion testing apparatus
US2602889A (en) * 1946-01-30 1952-07-08 Richard F Post Mixing circuit

Also Published As

Publication number Publication date
GB449470A (en) 1936-06-24
US2107394A (en) 1938-02-08

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