JPS57143944A - Channel setting structure - Google Patents
Channel setting structureInfo
- Publication number
- JPS57143944A JPS57143944A JP3006081A JP3006081A JPS57143944A JP S57143944 A JPS57143944 A JP S57143944A JP 3006081 A JP3006081 A JP 3006081A JP 3006081 A JP3006081 A JP 3006081A JP S57143944 A JPS57143944 A JP S57143944A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- contacts
- changeover switch
- contact
- terminals
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
Landscapes
- Selective Calling Equipment (AREA)
- Transmitters (AREA)
Abstract
PURPOSE:To set channels very easily by connecting an (n)-number of terminals of an (n)-number of contacts for one circuit to an (n)-number of oscillating circuits and by connecting two terminals of two contacts for one circuit to optional two out of the (n)-number of contacts for one circuit. CONSTITUTION:A changeover switch A having an (n)-number of contact for one circuit and a changeover switch B having two contacts for one circuit are provided with a common terminals A0 and an (n)-number of contacts A1-An, and a common terminals B0 and two contacts B1 and B2. A rectangular-wave generating circuit generates rectangular waves S1 and S2 which never overlap with each other in terms of time, and an oscillating circuit C output a signal with a frequency f1 from a terminal (b) when a high-potential signal arrives at the terminal (a) of a gate C1g . At this time, the former changeover switch is placed at the side of the contact A2, and the latter changeover switch is placed at the side of the contact B2, generating a specific radio wave. Thus, the contact positions of both the switches are selected adequately to set a (2n)-number of channels.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3006081A JPS57143944A (en) | 1981-03-02 | 1981-03-02 | Channel setting structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3006081A JPS57143944A (en) | 1981-03-02 | 1981-03-02 | Channel setting structure |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57143944A true JPS57143944A (en) | 1982-09-06 |
JPS6366475B2 JPS6366475B2 (en) | 1988-12-20 |
Family
ID=12293275
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3006081A Granted JPS57143944A (en) | 1981-03-02 | 1981-03-02 | Channel setting structure |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57143944A (en) |
-
1981
- 1981-03-02 JP JP3006081A patent/JPS57143944A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6366475B2 (en) | 1988-12-20 |
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