JPS5546668A - Channel selector of electronic tuner - Google Patents
Channel selector of electronic tunerInfo
- Publication number
- JPS5546668A JPS5546668A JP12063478A JP12063478A JPS5546668A JP S5546668 A JPS5546668 A JP S5546668A JP 12063478 A JP12063478 A JP 12063478A JP 12063478 A JP12063478 A JP 12063478A JP S5546668 A JPS5546668 A JP S5546668A
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- voltage
- transistor
- traveling
- 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.)
- Pending
Links
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
PURPOSE: :To simplify operations by automatically controlling a band switching transistor in accordance with variation in resistance value of a variable resistor to a voltage variable-cpacity element.
CONSTITUTION: Between direct-current power terminal 15 and the earth, turning- voltage setting variable resistor VL is interposed and its traveling terminal and one terminal of voltage varactor 2 are connected together in terms of direct current. Further, switching transistor 13 is connected between the traveling terminal and band-switching element 5 so as to apply a tuning voltage to element 2 corresponding to the position of the traveling terminal, and a control voltage is applied to the base of transistor 13. Then, transistor 13 is controlled at the fixed position of the traveling terminal to turn element 5 ON-OFF, thereby attaining reception of a desired band.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12063478A JPS5546668A (en) | 1978-09-28 | 1978-09-28 | Channel selector of electronic tuner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12063478A JPS5546668A (en) | 1978-09-28 | 1978-09-28 | Channel selector of electronic tuner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5546668A true JPS5546668A (en) | 1980-04-01 |
Family
ID=14791070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12063478A Pending JPS5546668A (en) | 1978-09-28 | 1978-09-28 | Channel selector of electronic tuner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5546668A (en) |
-
1978
- 1978-09-28 JP JP12063478A patent/JPS5546668A/en active Pending
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