JPS5494801A - Selection circuit - Google Patents

Selection circuit

Info

Publication number
JPS5494801A
JPS5494801A JP212278A JP212278A JPS5494801A JP S5494801 A JPS5494801 A JP S5494801A JP 212278 A JP212278 A JP 212278A JP 212278 A JP212278 A JP 212278A JP S5494801 A JPS5494801 A JP S5494801A
Authority
JP
Japan
Prior art keywords
reception
band
voltage
slider
switches
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
JP212278A
Other languages
Japanese (ja)
Inventor
Akio Hashima
Shuzo Wakai
Mitsuo Nanbae
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP212278A priority Critical patent/JPS5494801A/en
Publication of JPS5494801A publication Critical patent/JPS5494801A/en
Pending legal-status Critical Current

Links

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

PURPOSE: To easily selectable for the reception band, by arranging the switch circuit group response to the detection of the relative polarity of the voltage fed to two voltage input terminals as selection circuit elements and by combinating it with the center tapped potentiometer.
CONSTITUTION: The position of the slider 17 is recognized by detecting the relative potential of the voltage fed to the voltage input terminals 35 and 50 of the first and second with the discriminator 20. When the reception frequency is at VHF band and the slider 17 is lower than the intermediate tap 14, E1<E2. The semiconductor switch 24 is turned on and 21, 29 are OFF. It is inverse in case of a high band. The semiconductor switch 27 is turned on with VHF reception and OFF wth UHF reception. In case of UHF reception, the switches 21, 24, 29 are also OFf. The turning on and off for the switches, change the voltage variable range of the potentiometer 13 and reception band can easily be selected.
COPYRIGHT: (C)1979,JPO&Japio
JP212278A 1978-01-11 1978-01-11 Selection circuit Pending JPS5494801A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP212278A JPS5494801A (en) 1978-01-11 1978-01-11 Selection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP212278A JPS5494801A (en) 1978-01-11 1978-01-11 Selection circuit

Publications (1)

Publication Number Publication Date
JPS5494801A true JPS5494801A (en) 1979-07-26

Family

ID=11520537

Family Applications (1)

Application Number Title Priority Date Filing Date
JP212278A Pending JPS5494801A (en) 1978-01-11 1978-01-11 Selection circuit

Country Status (1)

Country Link
JP (1) JPS5494801A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58138427U (en) * 1982-03-10 1983-09-17 カシオ計算機株式会社 tuner band switching circuit
JPS6273625U (en) * 1985-10-29 1987-05-12

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58138427U (en) * 1982-03-10 1983-09-17 カシオ計算機株式会社 tuner band switching circuit
JPS6273625U (en) * 1985-10-29 1987-05-12

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