JPH028240U - - Google Patents

Info

Publication number
JPH028240U
JPH028240U JP8558288U JP8558288U JPH028240U JP H028240 U JPH028240 U JP H028240U JP 8558288 U JP8558288 U JP 8558288U JP 8558288 U JP8558288 U JP 8558288U JP H028240 U JPH028240 U JP H028240U
Authority
JP
Japan
Prior art keywords
variable capacitance
capacitance diode
band
resonant circuit
wave band
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
JP8558288U
Other languages
Japanese (ja)
Other versions
JPH0724828Y2 (en
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 JP1988085582U priority Critical patent/JPH0724828Y2/en
Publication of JPH028240U publication Critical patent/JPH028240U/ja
Application granted granted Critical
Publication of JPH0724828Y2 publication Critical patent/JPH0724828Y2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Superheterodyne Receivers (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

図は本考案の一実施例を示す回路図である。 １……可変容量ダイオード、２……中波バンド
用共振回路、６……第１共振回路、７……第２共
振回路、１７，１８，１９，２０……スイツチン
グトランジスタ（スイツチング回路）。 The figure is a circuit diagram showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Variable capacitance diode, 2 ... Resonance circuit for medium wave band, 6 ... First resonance circuit, 7 ... Second resonance circuit, 17, 18, 19, 20... Switching transistor (switching circuit).

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 同調電圧により容量値が可変される可変容量ダ
イオードと、この可変容量ダイオードの一端に接
続された中波バンド用共振回路と、前記可変容量
ダイオードの他端に直列接続された短波バンド用
の第１及び第２共振回路と、各バンドの電源電圧
に応じて前記各共振回路を選択的に短絡するスイ
ツチング回路とを具備したことを特徴とする多バ
ンド受信機の局部発振回路。 A variable capacitance diode whose capacitance value is varied by a tuning voltage, a medium wave band resonant circuit connected to one end of the variable capacitance diode, and a short wave band resonant circuit connected in series to the other end of the variable capacitance diode. A local oscillation circuit for a multi-band receiver, comprising: a second resonant circuit; and a switching circuit that selectively shorts the resonant circuits according to the power supply voltage of each band.
JP1988085582U 1988-06-28 1988-06-28 Local oscillator circuit of multiband receiver Expired - Fee Related JPH0724828Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988085582U JPH0724828Y2 (en) 1988-06-28 1988-06-28 Local oscillator circuit of multiband receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988085582U JPH0724828Y2 (en) 1988-06-28 1988-06-28 Local oscillator circuit of multiband receiver

Publications (2)

Publication Number Publication Date
JPH028240U true JPH028240U (en) 1990-01-19
JPH0724828Y2 JPH0724828Y2 (en) 1995-06-05

Family

ID=31310235

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988085582U Expired - Fee Related JPH0724828Y2 (en) 1988-06-28 1988-06-28 Local oscillator circuit of multiband receiver

Country Status (1)

Country Link
JP (1) JPH0724828Y2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6318806A (en) * 1986-07-11 1988-01-26 Matsushita Electric Ind Co Ltd Local oscillator circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6318806A (en) * 1986-07-11 1988-01-26 Matsushita Electric Ind Co Ltd Local oscillator circuit

Also Published As

Publication number Publication date
JPH0724828Y2 (en) 1995-06-05

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Legal Events

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