GB2049325B - Tuning a trap circuit - Google Patents

Tuning a trap circuit

Info

Publication number
GB2049325B
GB2049325B GB8012119A GB8012119A GB2049325B GB 2049325 B GB2049325 B GB 2049325B GB 8012119 A GB8012119 A GB 8012119A GB 8012119 A GB8012119 A GB 8012119A GB 2049325 B GB2049325 B GB 2049325B
Authority
GB
United Kingdom
Prior art keywords
tuning
trap circuit
trap
circuit
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
GB8012119A
Other versions
GB2049325A (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.)
RCA Corp
Original Assignee
RCA 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
Priority claimed from US06/032,026 external-priority patent/US4272743A/en
Priority claimed from US06/032,025 external-priority patent/US4263619A/en
Application filed by RCA Corp filed Critical RCA Corp
Publication of GB2049325A publication Critical patent/GB2049325A/en
Application granted granted Critical
Publication of GB2049325B publication Critical patent/GB2049325B/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
    • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
    • 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
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/06—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges
    • H03J3/08—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges by varying a second parameter simultaneously with the tuning, e.g. coupling bandpass filter

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Superheterodyne Receivers (AREA)
  • Noise Elimination (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
GB8012119A 1979-04-20 1980-04-11 Tuning a trap circuit Expired GB2049325B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/032,026 US4272743A (en) 1979-04-20 1979-04-20 Method for tuning a filter circuit
US06/032,025 US4263619A (en) 1979-04-20 1979-04-20 Double trapping of adjacent channel sound

Publications (2)

Publication Number Publication Date
GB2049325A GB2049325A (en) 1980-12-17
GB2049325B true GB2049325B (en) 1983-10-26

Family

ID=26707876

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8012119A Expired GB2049325B (en) 1979-04-20 1980-04-11 Tuning a trap circuit

Country Status (6)

Country Link
KR (1) KR830002443B1 (en)
DE (1) DE3014983C2 (en)
FI (1) FI801164A (en)
FR (1) FR2454735A1 (en)
GB (1) GB2049325B (en)
IT (1) IT1141926B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3318197C1 (en) * 1983-05-19 1984-10-04 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen Input circuitry for television receivers
DE10106071C1 (en) 2001-02-09 2002-07-11 Harman Becker Automotive Sys Television receiver has control signal for selective filter stage obtained from signal representing reception field strength

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2907960A (en) * 1954-04-26 1959-10-06 Rca Corp Signal transfer apparatus
US3217096A (en) * 1961-06-02 1965-11-09 Motorola Inc Signal coupling and trap network
US3562417A (en) * 1968-06-17 1971-02-09 Zenith Radio Corp Signal-translating filter network for a television receiver

Also Published As

Publication number Publication date
FI801164A (en) 1980-10-21
DE3014983C2 (en) 1982-10-14
IT1141926B (en) 1986-10-08
DE3014983A1 (en) 1980-11-06
IT8021476A0 (en) 1980-04-18
KR830002443B1 (en) 1983-10-26
FR2454735A1 (en) 1980-11-14
GB2049325A (en) 1980-12-17
KR830004015A (en) 1983-06-30

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee