JPS5516574A - Sound intermediate frequency converter - Google Patents
Sound intermediate frequency converterInfo
- Publication number
- JPS5516574A JPS5516574A JP8967078A JP8967078A JPS5516574A JP S5516574 A JPS5516574 A JP S5516574A JP 8967078 A JP8967078 A JP 8967078A JP 8967078 A JP8967078 A JP 8967078A JP S5516574 A JPS5516574 A JP S5516574A
- Authority
- JP
- Japan
- Prior art keywords
- tuning
- mixer circuit
- input
- frequency
- frequency mixer
- 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)
Abstract
PURPOSE: To realize not less than three kinds of broadcasting different in tone intermediate frequency by changing turning elements of a frequency mixer circuit over by connecting a switching method to output terminals of several tuning input circuits.
CONSTITUTION: To the input terminal of frequency mixer circuit 5 which converts tone intermediate frequencies different in broadcasting system into a fixed tone intermediate frequency, output terminals of input tuning circuits 6, 6' and 6" are connected via input diodes 10, 10' and 10". Between power supply 9 and the output terminals of tuning input circuits 6, 6' and 6", change-over switch 12 is connected and tuning elements of frequency mixer circuit 5 are changed over corresponding to the switching of this switch 12. Consequently, an output signal from frequency mixer circuit 5 is applied to output tuning circuit 7, and a signal of a specific frequency can be obtained from output terminal 8.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8967078A JPS5516574A (en) | 1978-07-19 | 1978-07-19 | Sound intermediate frequency converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8967078A JPS5516574A (en) | 1978-07-19 | 1978-07-19 | Sound intermediate frequency converter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5516574A true JPS5516574A (en) | 1980-02-05 |
Family
ID=13977170
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8967078A Pending JPS5516574A (en) | 1978-07-19 | 1978-07-19 | Sound intermediate frequency converter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5516574A (en) |
-
1978
- 1978-07-19 JP JP8967078A patent/JPS5516574A/en active Pending
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