JPS5558616A - Tuning circuit of uhf tuner and adjustment method of its resonance frequency - Google Patents

Tuning circuit of uhf tuner and adjustment method of its resonance frequency

Info

Publication number
JPS5558616A
JPS5558616A JP13055378A JP13055378A JPS5558616A JP S5558616 A JPS5558616 A JP S5558616A JP 13055378 A JP13055378 A JP 13055378A JP 13055378 A JP13055378 A JP 13055378A JP S5558616 A JPS5558616 A JP S5558616A
Authority
JP
Japan
Prior art keywords
coil
resonance
tuning circuit
uhf tuner
resonance 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.)
Granted
Application number
JP13055378A
Other languages
Japanese (ja)
Other versions
JPS6046568B2 (en
Inventor
Mitsuhisa Shinagawa
Toshio Nagashima
Takeshi Saito
Hiroshi Hatashita
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13055378A priority Critical patent/JPS6046568B2/en
Priority to GB7934446A priority patent/GB2035708B/en
Publication of JPS5558616A publication Critical patent/JPS5558616A/en
Publication of JPS6046568B2 publication Critical patent/JPS6046568B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To obtain the tuning circuit of a UHF tuner where assembling automatization and adjustment are easy, by constituting a resonance coil by a pair of coils which are connected in parallel.
CONSTITUTION: A tuning circuit is constituted by input connection coil 8, output connection coil 10, a resonance coil constituted by two U-shaped resonance coils 14 and 15 which are connected to input connection coil 8 and output connection coil 10 electromagnetically and have both ends connected into one body, trimmer condenser 5 (5a, 5b) connected in series to resonance coil 14, and a series circuit consisting of a varactor diode and a tracking correcting capacitor which are connected in parallel to the trimmer condenser above. Then, resonance coil 15 is inclined to change the connection degree to resonance coil 14, thereby adjusting resonance inductance.
COPYRIGHT: (C)1980,JPO&Japio
JP13055378A 1978-10-06 1978-10-25 UHF tuner tuning circuit and its resonant frequency adjustment method Expired JPS6046568B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP13055378A JPS6046568B2 (en) 1978-10-25 1978-10-25 UHF tuner tuning circuit and its resonant frequency adjustment method
GB7934446A GB2035708B (en) 1978-10-06 1979-10-04 Tunable resonant circuits for uhf tuners in televison receivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13055378A JPS6046568B2 (en) 1978-10-25 1978-10-25 UHF tuner tuning circuit and its resonant frequency adjustment method

Publications (2)

Publication Number Publication Date
JPS5558616A true JPS5558616A (en) 1980-05-01
JPS6046568B2 JPS6046568B2 (en) 1985-10-16

Family

ID=15037017

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13055378A Expired JPS6046568B2 (en) 1978-10-06 1978-10-25 UHF tuner tuning circuit and its resonant frequency adjustment method

Country Status (1)

Country Link
JP (1) JPS6046568B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5972001U (en) * 1982-11-02 1984-05-16 松下電器産業株式会社 microwave filter
EP1191625A2 (en) * 2000-09-22 2002-03-27 Filtronic LK Oy High-pass filter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5972001U (en) * 1982-11-02 1984-05-16 松下電器産業株式会社 microwave filter
EP1191625A2 (en) * 2000-09-22 2002-03-27 Filtronic LK Oy High-pass filter
EP1191625A3 (en) * 2000-09-22 2003-05-14 Filtronic LK Oy High-pass filter

Also Published As

Publication number Publication date
JPS6046568B2 (en) 1985-10-16

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