JPS5525279A - Automatic frequency tuning defeat device - Google Patents
Automatic frequency tuning defeat deviceInfo
- Publication number
- JPS5525279A JPS5525279A JP9877978A JP9877978A JPS5525279A JP S5525279 A JPS5525279 A JP S5525279A JP 9877978 A JP9877978 A JP 9877978A JP 9877978 A JP9877978 A JP 9877978A JP S5525279 A JPS5525279 A JP S5525279A
- Authority
- JP
- Japan
- Prior art keywords
- switch
- automatic frequency
- frequency tuning
- terminals
- defeat
- 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
- Television Receiver Circuits (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
PURPOSE: To sucure the identical automatic frequency tuning output voltage at both the ON and OFF time of the automatic frequency tuning defeat switch by setting the phase difference to 0 or ±90 degrees between the 1st and 2nd signals by the function of the defeat switch.
CONSTITUTION: The video IF signal is applied to limiter amplifier 20, and the output of amplifier 20 is sent to transformer 25 for the limiter. At the same time, voltage er and es are supplied between terminals P1 and P2 as well as between P3 and P4 of multiplication phase detector 26 respectively. Detector 26 detects the phase shift for the signal to be applied to its input terminal to lead it out to output terminals P5 and P6. Also AFT defeat switch 33 is provided between terminals P3 and P4, and the phase difference between signals es and er is set to 0 or ±90 degrees by the function of switch 33. Thus the identical AFT output voltage can be obtained at the both ON and OFF time of switch 33.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9877978A JPS5525279A (en) | 1978-08-14 | 1978-08-14 | Automatic frequency tuning defeat device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9877978A JPS5525279A (en) | 1978-08-14 | 1978-08-14 | Automatic frequency tuning defeat device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5525279A true JPS5525279A (en) | 1980-02-22 |
Family
ID=14228848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9877978A Pending JPS5525279A (en) | 1978-08-14 | 1978-08-14 | Automatic frequency tuning defeat device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5525279A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5795716A (en) * | 1980-12-04 | 1982-06-14 | Fujitsu Ten Ltd | Potentiometer preset type electronic tuning receiver |
JPS5821099U (en) * | 1981-07-28 | 1983-02-09 | 太陽鉄工株式会社 | circular steel form |
JPS59228598A (en) * | 1983-06-09 | 1984-12-21 | 株式会社金沢製作所 | Moving mold apparatus for coating tunnel |
-
1978
- 1978-08-14 JP JP9877978A patent/JPS5525279A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5795716A (en) * | 1980-12-04 | 1982-06-14 | Fujitsu Ten Ltd | Potentiometer preset type electronic tuning receiver |
JPS5821099U (en) * | 1981-07-28 | 1983-02-09 | 太陽鉄工株式会社 | circular steel form |
JPS59228598A (en) * | 1983-06-09 | 1984-12-21 | 株式会社金沢製作所 | Moving mold apparatus for coating tunnel |
JPH0237478B2 (en) * | 1983-06-09 | 1990-08-24 | Kanazawa Seisakusho Kk |
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