CN2496207Y - Receiving antenna amplifier power-supply box of all-channel TV - Google Patents
Receiving antenna amplifier power-supply box of all-channel TV Download PDFInfo
- Publication number
- CN2496207Y CN2496207Y CN 01233456 CN01233456U CN2496207Y CN 2496207 Y CN2496207 Y CN 2496207Y CN 01233456 CN01233456 CN 01233456 CN 01233456 U CN01233456 U CN 01233456U CN 2496207 Y CN2496207 Y CN 2496207Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- connects
- terminal
- antenna amplifier
- triggering
- 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.)
- Expired - Fee Related
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- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
The utility model relates to an all channel television receiving antenna amplifier power supply box, which consists of a television power supply socket, a sampling circuit, a bidirectional thyristor and a triggering circuit, a transformer and a coupling circuit, wherein one terminal of the television power supply socket is connected with an A terminal with a maximum 220V after being connected with one terminal of the primary of the transformer, the other terminal of the television power supply socket is connected with a B terminal with a maximum 220V through the sampling circuit, the other terminal of the primary of the transformer is connected with the B terminal with a maximum 220V terminal through the bidirectional thyristor, the output terminal of the sampling circuit is connected with the input terminal of the triggering circuit, the output terminal of the triggering circuit is connected with the gate of the bidirectional thyristor, the secondary of the transformer is connected with the coupling circuit, the coupling circuit is connected with the antenna amplifier through a coaxial cable, and the other output terminal of the coupling circuit is connected with the antenna port of the television. The utility model has the advantages that the antenna amplifier power supply can be automatically shut off after the television is turned off, and the service life of the antenna amplifier is prolonged.
Description
Technical field
The utility model relates to a kind of full channel tv receiving antenna amplifier power supply box.
Background technology
At present, television reception sky level amplifier power supply box commonly used only is responsible for providing power supply to antenna amplifier antennafire, and outdoor antenna amplifier is in electriferous state always, and influences the useful life of components and parts.No matter television set is in the equal charging operation of any state to the feeder ear of television set, has both influenced the useful life of electrical equipment, wastes electric energy again.
Summary of the invention
Topic provides a kind of full channel tv receiving antenna amplifier power supply box that can cut off the antenna amplifier antennafire power supply when television set shuts down automatically between technology to be solved in the utility model.
The technical scheme that its technical problem that solves the utility model adopts is:
The utility model is by the TV set power socket, sample circuit, bidirectional triode thyristor and circuits for triggering thereof, transformer, coupling circuit is formed, one end of TV set power socket with connect after an end of primary is connected～the A end of 220V, the other end of TV set power socket connects～B of 220V end through sample circuit, the other end of primary connects～B of 220V end through bidirectional triode thyristor, the input of the output connecting triggering circuit of sample circuit, the output of circuits for triggering connects the control utmost point of bidirectional triode thyristor, the secondary coupling circuit that connects of transformer, coupling circuit is connected with coaxial cable with antenna amplifier antennafire, and another road output of coupling circuit connects the antenna port of TV.
The beneficial effects of the utility model are can cut off the antenna amplifier antennafire power supply automatically after the television set shutdown, have prolonged the useful life of antenna amplifier antennafire.
Description of drawings
Fig. 1 is a theory diagram of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
By Fig. 1, embodiment shown in 2 as can be known, it is by the TV set power socket, sample circuit, bidirectional triode thyristor and circuits for triggering thereof, transformer, coupling circuit is formed, one end of TV set power socket with connect after an end of primary is connected～the A end of 220V, the other end of TV set power socket connects～B of 220V end through sample circuit, the other end of primary connects～B of 220V end through bidirectional triode thyristor, the input of the output connecting triggering circuit of sample circuit, the output of circuits for triggering connects the control utmost point of bidirectional triode thyristor, the secondary coupling circuit that connects of transformer, coupling circuit is connected with coaxial cable with antenna amplifier antennafire, and another road output of coupling circuit connects the antenna port of television set.
Its sample circuit is by resistance R
1Form R
1Be connected on TV set power socket CZ an end and～B of 220V end between, the other end of CZ and transformer B
1Elementary 1 end connects after connecting～the A end of 220V, and B
1The negative electrode of 2 elementary termination bidirectional triode thyristor BCR, the anode of BCR connect～the B end of 220V.
Its circuits for triggering are by diode D
1-D
4, capacitor C
1, resistance R
2The current rectifying and wave filtering circuit of forming, D
1With R
1Parallel connection, D
2-D
4Back and D successively connect
1Parallel connection, C
1Be attempted by D
3Positive pole and D
4Negative pole between, R
2Be connected on C
1Positive pole and the control utmost point of bidirectional triode thyristor BCR between.
Its coupling circuit is by choke L, coupling capacitance C
2, resistance R
4, R
5Form the 1 termination B of L
13 secondary ends, B
14 secondary end ground connection, 2 ends one tunnel of L connect antenna amplifier antennafire through coaxial cable, and another road of 2 ends of L is successively through C
2, R
4, R
5Meet the antenna port CH of television set.
In Fig. 2, resistance R
3With the LED series connection at B
1Secondary, and form display circuit; CHO is a coaxial cable interface.
The course of work of the present utility model is as follows:
The TV set power plug is inserted on the socket CZ on this power pack, turn on television set, the R of sample circuit
1Obtain sampled signal, after rectification filters, C
1On voltage triggered BCR conducting, transformer B
1Secondary output～12V makes its work through L and coaxial cable to day level amplifier.The TV signal of full channel tv receiving antenna amplifier is through coaxial cable, C
2, R
4, R
5To TV set aerial port CH, television set is normally watched.After the television set shutdown, the R of sample circuit
1Last no signal, circuits for triggering do not produce triggering signal, and BCR ends, and cut off the power supply of antenna amplifier antennafire.
Claims (4)
1, a kind of full channel tv receiving antenna amplifier power supply box, it is characterized in that it is by the TV set power socket, sample circuit, bidirectional triode thyristor and circuits for triggering thereof, transformer, coupling circuit is formed, one end of TV set power socket with connect after an end of primary is connected～the A end of 220V, the other end of TV set power socket connects～B of 220V end through sample circuit, the other end of primary connects～B of 220V end through bidirectional triode thyristor, the input of the output connecting triggering circuit of sample circuit, the output of circuits for triggering connects the control utmost point of bidirectional triode thyristor, the secondary coupling circuit that connects of transformer, coupling circuit is connected with coaxial cable with antenna amplifier antennafire, and another road output of coupling circuit connects the antenna port of television set.
2, power pack according to claim 1 is characterized in that sample circuit is by resistance R
1Form R
1Be connected on TV set power socket CZ an end and～B of 220V end between, the other end of CZ and transformer B
1Elementary 1 end connects after connecting～the A end of 220V, and B
1The negative electrode of 2 elementary termination bidirectional triode thyristor BCR, the anode of BCR connect～the B end of 220V.
3, power pack according to claim 2 is characterized in that circuits for triggering are by diode D
1-D
4, capacitor C
1, resistance R
2The current rectifying and wave filtering circuit of forming, D
1With R
1Parallel connection, D
2-D
4Back and D successively connect
1Parallel connection, C
1Be attempted by D
3Positive pole and D
4Negative pole between, R
2Be connected on C
1Positive pole and the control utmost point of bidirectional triode thyristor BCR between.
4, power pack according to claim 3 is characterized in that coupling circuit is by choke L, coupling capacitance C
2, resistance R
4, R
5Form the 1 termination B of L
13 secondary ends, B
14 secondary end ground connection, 2 ends one tunnel of L connect antenna amplifier antennafire through coaxial cable, and another road of 2 ends of L is successively through C
2, R
4, R
5Meet the antenna port CH of television set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01233456 CN2496207Y (en) | 2001-08-20 | 2001-08-20 | Receiving antenna amplifier power-supply box of all-channel TV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01233456 CN2496207Y (en) | 2001-08-20 | 2001-08-20 | Receiving antenna amplifier power-supply box of all-channel TV |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2496207Y true CN2496207Y (en) | 2002-06-19 |
Family
ID=33647286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01233456 Expired - Fee Related CN2496207Y (en) | 2001-08-20 | 2001-08-20 | Receiving antenna amplifier power-supply box of all-channel TV |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2496207Y (en) |
-
2001
- 2001-08-20 CN CN 01233456 patent/CN2496207Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |