JPS5678231A - High-frequency switch - Google Patents
High-frequency switchInfo
- Publication number
- JPS5678231A JPS5678231A JP15483879A JP15483879A JPS5678231A JP S5678231 A JPS5678231 A JP S5678231A JP 15483879 A JP15483879 A JP 15483879A JP 15483879 A JP15483879 A JP 15483879A JP S5678231 A JPS5678231 A JP S5678231A
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- diodes
- signal
- antenna
- turned
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/74—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of diodes
Landscapes
- Electronic Switches (AREA)
Abstract
PURPOSE:To save energy while preventing a signal in switching from leaking by controlling a semiconductor element, connected in the opposite direction, by a switching control power source by using this semiconductor element to change over a TV receiver with VTR as an additional device. CONSTITUTION:A TV signal from antenna terminal 4a of antenna 4 and a picture signal from converter terminal 3a of VTR device 2 are changed over by high- frequency switch 5 and supplied to TV1. This switch 5 is composed of reversely connected diodes 16 and 17 connected to terminal 4a and diodes 18 and 19 connected in series to terminal 3a, and the connection points of diodes 16 and 17, and 18 and 19 are connected to switching control power terminal 20 via resistances 24 and 25 respectively. When terminal 20 is opened or short-circuited, diodes 16-19 are turned on and an input to terminal 4a is applied to antenna input terminal 1a to hold TV reception in readiness; when a positive voltage is applied to terminal 20, diodes 16-19 are turned off and a signal to terminal 3a is applied to terminal 1 without leakage and reproduced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15483879A JPS5678231A (en) | 1979-11-29 | 1979-11-29 | High-frequency switch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15483879A JPS5678231A (en) | 1979-11-29 | 1979-11-29 | High-frequency switch |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5678231A true JPS5678231A (en) | 1981-06-27 |
Family
ID=15592980
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15483879A Pending JPS5678231A (en) | 1979-11-29 | 1979-11-29 | High-frequency switch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5678231A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59101980A (en) * | 1982-12-01 | 1984-06-12 | Mitsubishi Electric Corp | Magnetic picture recording and reproducing device |
JPS60142684A (en) * | 1983-12-29 | 1985-07-27 | Matsushita Electric Ind Co Ltd | Switching device of video signal |
JPS61274405A (en) * | 1985-03-21 | 1986-12-04 | ゼネラル・エレクトリツク・カンパニイ | Gate type modulator for wireless frequency carrier signal |
-
1979
- 1979-11-29 JP JP15483879A patent/JPS5678231A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59101980A (en) * | 1982-12-01 | 1984-06-12 | Mitsubishi Electric Corp | Magnetic picture recording and reproducing device |
JPS60142684A (en) * | 1983-12-29 | 1985-07-27 | Matsushita Electric Ind Co Ltd | Switching device of video signal |
JPS61274405A (en) * | 1985-03-21 | 1986-12-04 | ゼネラル・エレクトリツク・カンパニイ | Gate type modulator for wireless frequency carrier signal |
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