JPS5518166A - Input circuit of vhf tuner - Google Patents

Input circuit of vhf tuner

Info

Publication number
JPS5518166A
JPS5518166A JP9134378A JP9134378A JPS5518166A JP S5518166 A JPS5518166 A JP S5518166A JP 9134378 A JP9134378 A JP 9134378A JP 9134378 A JP9134378 A JP 9134378A JP S5518166 A JPS5518166 A JP S5518166A
Authority
JP
Japan
Prior art keywords
band
terminal
switching
supplied
high channel
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.)
Pending
Application number
JP9134378A
Other languages
Japanese (ja)
Inventor
Kiichi Yamamoto
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.)
NEC Home Electronics Ltd
NEC Corp
Original Assignee
NEC Home Electronics Ltd
Nippon Electric Co 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 NEC Home Electronics Ltd, Nippon Electric Co Ltd filed Critical NEC Home Electronics Ltd
Priority to JP9134378A priority Critical patent/JPS5518166A/en
Publication of JPS5518166A publication Critical patent/JPS5518166A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

PURPOSE:To facilitate the assembling adjustment through a simple constitution by supplying the switching voltage through the switching terminal to secure the short circuit for two units of BPF at the reception time of the low or high channel band. CONSTITUTION:BPF2 for the VHF band high channel and BPF3 for the VHF band high channel are connected in series to input terminal 1 of the VHF band channel signal, and switching diode 4 or 5 is connected in parallel to filter 2 or 3 each. And the switching voltage is supplied to these filters from terminal 8 or 9 via resistance 6 or 7 and according to the reception band. Then the voltage to give conduction to diode 4 is supplied from terminal 8 to short-circuit BPF2 at the reception time of the low channel band; and the switching voltage is supplied from terminal 9 to give short circuit to BPF3 at the reception time of the high channel band respectively. Thus the assembling adjustment can be facilitated through a simple constitution.
JP9134378A 1978-07-25 1978-07-25 Input circuit of vhf tuner Pending JPS5518166A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9134378A JPS5518166A (en) 1978-07-25 1978-07-25 Input circuit of vhf tuner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9134378A JPS5518166A (en) 1978-07-25 1978-07-25 Input circuit of vhf tuner

Publications (1)

Publication Number Publication Date
JPS5518166A true JPS5518166A (en) 1980-02-08

Family

ID=14023766

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9134378A Pending JPS5518166A (en) 1978-07-25 1978-07-25 Input circuit of vhf tuner

Country Status (1)

Country Link
JP (1) JPS5518166A (en)

Similar Documents

Publication Publication Date Title
JPS6444616A (en) Low phase loss compatible nonlinear frequency band pass filter
JPS5227244A (en) Microwave polarized bandpass filter
JPS56156041A (en) Multiplexer
JPS5518166A (en) Input circuit of vhf tuner
GB1534319A (en) Electrical filter networks
JPS5753118A (en) Selecting circuit for pass band
SU1105977A1 (en) Process for starting static equalizer of reactive power
JPS543451A (en) High frequency amplifying device
JPS56157149A (en) Stereo separation control device for fm tuner
JPS52126117A (en) Input tuning circuit
JPS51118301A (en) Circuit distribution for switching tuner s receiving frequency band
JPS5642424A (en) Input circuit of vhf tuner
JPS55151811A (en) Band switching circuit of tuner
JPS53142810A (en) Selection unit for amplifier
JPS5650618A (en) Channel selection device
JPS56149889A (en) Push-botton telephone signal receiving system
JPS5723334A (en) Tuning circuit equipped with vco
JPS53102653A (en) Rc oscillating circuit
JPS5467301A (en) Channel selector
JPS56157115A (en) Switched capacitor filter
JPS5666906A (en) Frequency multiplying circuit
JPS5781713A (en) Wide-band amplifier
JPS54128245A (en) Branching filter
JPS5698032A (en) Television tuner
JPS55147841A (en) Beat elimination unit