JPS5438840Y2 - - Google Patents

Info

Publication number
JPS5438840Y2
JPS5438840Y2 JP1973132488U JP13248873U JPS5438840Y2 JP S5438840 Y2 JPS5438840 Y2 JP S5438840Y2 JP 1973132488 U JP1973132488 U JP 1973132488U JP 13248873 U JP13248873 U JP 13248873U JP S5438840 Y2 JPS5438840 Y2 JP S5438840Y2
Authority
JP
Japan
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
JP1973132488U
Other versions
JPS5076744U (ja
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 filed Critical
Priority to JP1973132488U priority Critical patent/JPS5438840Y2/ja
Priority to US05/523,482 priority patent/US3956719A/en
Priority to GB4931374A priority patent/GB1470197A/en
Priority to AU75341/74A priority patent/AU486527B2/en
Priority to IT7429499A priority patent/IT1025749B/it
Priority to CA213,839A priority patent/CA1023818A/en
Priority to DE19742454535 priority patent/DE2454535A1/de
Priority to FR7437965A priority patent/FR2251951B1/fr
Priority to NL7415022A priority patent/NL7415022A/xx
Publication of JPS5076744U publication Critical patent/JPS5076744U/ja
Application granted granted Critical
Publication of JPS5438840Y2 publication Critical patent/JPS5438840Y2/ja
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/02—Manually-operated control
    • H03G5/14—Manually-operated control in frequency-selective amplifiers
    • 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
    • H03H9/58—Multiple crystal filters
    • H03H9/581—Multiple crystal filters comprising ceramic piezoelectric layers

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Filters And Equalizers (AREA)
  • Circuits Of Receivers In General (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
JP1973132488U 1973-11-16 1973-11-16 Expired JPS5438840Y2 (ja)

Priority Applications (9)

Application Number Priority Date Filing Date Title
JP1973132488U JPS5438840Y2 (ja) 1973-11-16 1973-11-16
US05/523,482 US3956719A (en) 1973-11-16 1974-11-13 Variable band pass filter circuit
AU75341/74A AU486527B2 (en) 1974-11-14 Variable bandpass filter circuit
GB4931374A GB1470197A (en) 1973-11-16 1974-11-14 Variable band pass filter circuits
IT7429499A IT1025749B (it) 1973-11-16 1974-11-15 Circuito filtro passa banda di tipo variabile
CA213,839A CA1023818A (en) 1973-11-16 1974-11-15 Variable band pass filter circuit
DE19742454535 DE2454535A1 (de) 1973-11-16 1974-11-16 Variabler bandfilter
FR7437965A FR2251951B1 (ja) 1973-11-16 1974-11-18
NL7415022A NL7415022A (nl) 1973-11-16 1974-11-18 Bandfilterschakeling met variabele bandbreedte.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1973132488U JPS5438840Y2 (ja) 1973-11-16 1973-11-16

Publications (2)

Publication Number Publication Date
JPS5076744U JPS5076744U (ja) 1975-07-03
JPS5438840Y2 true JPS5438840Y2 (ja) 1979-11-17

Family

ID=15082534

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1973132488U Expired JPS5438840Y2 (ja) 1973-11-16 1973-11-16

Country Status (8)

Country Link
US (1) US3956719A (ja)
JP (1) JPS5438840Y2 (ja)
CA (1) CA1023818A (ja)
DE (1) DE2454535A1 (ja)
FR (1) FR2251951B1 (ja)
GB (1) GB1470197A (ja)
IT (1) IT1025749B (ja)
NL (1) NL7415022A (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4135201A (en) * 1977-03-09 1979-01-16 Tektronix, Inc. Dynamic damping for SECAM high-frequency de-emphasis
JPS55171121U (ja) * 1979-05-24 1980-12-08

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2218087A (en) * 1938-03-18 1940-10-15 Telefunken Gmbh Crystal filter of variable band width
US3416104A (en) * 1965-05-05 1968-12-10 Filtech Corp Band-pass crystal filters
US3456214A (en) * 1967-04-06 1969-07-15 Bell Telephone Labor Inc Capacitively coupled multisection crystal filter
US3633134A (en) * 1969-10-10 1972-01-04 Motorola Inc Crystal band pass filter circuit

Also Published As

Publication number Publication date
US3956719A (en) 1976-05-11
DE2454535A1 (de) 1975-05-22
AU7534174A (en) 1976-05-20
NL7415022A (nl) 1975-05-21
FR2251951A1 (ja) 1975-06-13
FR2251951B1 (ja) 1979-03-16
GB1470197A (en) 1977-04-14
IT1025749B (it) 1978-08-30
JPS5076744U (ja) 1975-07-03
CA1023818A (en) 1978-01-03

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