CN2346125Y - Stamen wire electric supply device for wired television - Google Patents
Stamen wire electric supply device for wired television Download PDFInfo
- Publication number
- CN2346125Y CN2346125Y CN98229959U CN98229959U CN2346125Y CN 2346125 Y CN2346125 Y CN 2346125Y CN 98229959 U CN98229959 U CN 98229959U CN 98229959 U CN98229959 U CN 98229959U CN 2346125 Y CN2346125 Y CN 2346125Y
- Authority
- CN
- China
- Prior art keywords
- ac120v
- stamen
- electric supply
- power supply
- voltage
- 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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- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Details Of Television Systems (AREA)
Abstract
The utility model discloses a stamen wire high voltage Ac120V electric supply device for a wired television, which is composed of an Ac120V stamen wire electric supply device, an Ac120V stamen wire electric supply trunk amplifier, an Ac120V stamen wire electric supply user distribution amplifier, an Ac120V stamen wire electric supply source inserter, an Ac120V stamen wire overflowing type equalizer and an Ac120V stamen wire elecrtric supply overflowing type branch distributor. The corresponding pressurization values or the corresponding capacities of a voltage dependent resistor, a discharge tube and a filtering capacitance all increase matched numerical values so as to ensure the normal running of a system line. After the supply source voltage is increased, the utility model has the advantages of small wastage, far transmission distance and high safety.
Description
The utility model relates to a kind of electric power system device, and particularly a kind of cable TV stamen line adopts the device of high voltage supply.
Low pressure Ac60V is adopted in existing cable TV stamen line power supply or below the Ac60V, because low-voltage power supply, transmission range is short, the relaying power supply is many, system and device cost height, and preventive maintenance time and expense are big, transmission current is big on the circuit, during current delivery on the line loss also big, and be unfavorable for system management.
Goal of the invention of the present utility model is intended to overcome above-mentioned shortcoming, and the device that provides a kind of cable TV stamen line to adopt high voltage supply, voltage are greater than 60V, and the standard supply power voltage exchanges 120Vc50HZ or 60HZ).
Goal of the invention of the present utility model is achieved in that the utility model comprises Ac120V stamen line charger, Ac120V stamen line supply main amplifier, Ac120V stamen line power supply user distribution amplifier, Ac120V stamen line power supply inserter, Ac120V stamen line is crossed the flow pattern equalizer, the Ac120V stamen line flow pattern branch distributor of powering.It is characterized in that: crossing in the current circuit of equalizer and mistake flow pattern branch distributor; filter capacitor in parallel between the High frequency filter inductance; its withstand voltage and Ac120V power supply is withstand voltage to match; the capacity of filter capacitor is 1000-10000PF; in the line amplifier power supply circuits; because supply power voltage is brought up to after the 120V; the withstand voltage of protection voltage is answered corresponding raising; therefore the piezo-resistance in the protective circuit of power input or the conducting voltage or the corresponding raising of puncture voltage of discharge tube; so the conducting voltage of piezo-resistance is that the withstand voltage of 270 volts or discharge tube is 600 volts.In the circuit of output terminal of power supply device, because output voltage is brought up to Ac120V by Ac60V, therefore, it is 600 volts that the withstand voltage of the discharge tube of the protective circuit in the circuit of output terminal should be brought up to puncture voltage.
The utility model improves supply voltage, and the system line electric current is reduced, and loss reduces, and transmission range increases, and the relaying power supply reduces, and is particularly suitable for the long Distance Transmission of cable TV, helps system management, reduces system failure rate.The loss that the thunder and lightning disaster is caused eases down to minimum level.
The utility model is when fitting operation, requiring installation personnel to carry common insulating gloves gets final product, system is installed as disposable (except that conventional maintenance), install reliable and stable safe the devoting oneself to work in back, user's use side since branch distributor and high pressure every the isolation of straight user terminal, user terminal is not with any AC power frequency voltage fully, and is safe.
Provide accompanying drawing of the present utility model below.
Fig. 1 the utility model power supply circuits schematic diagram.
Fig. 2 the utility model amplifier power supply circuits schematic diagram.
Fig. 3 the utility model overcurrent line equalizer circuit theory diagrams.
Fig. 4 the utility model branch distributor circuit theory diagrams.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
The utility model comprises Ac120V stamen line charger; Ac120V stamen line supply main amplifier; Ac120V stamen line power supply user distribution amplifier; Ac120V stamen line power supply inserter; Ac120V stamen line is crossed the flow pattern equalizer; the Ac120V stamen line flow pattern branch distributor of powering; it is characterized in that: crossing in the current circuit of equalizer and mistake flow pattern branch distributor; filter capacitor in parallel between the High frequency filter inductance; its withstand voltage and Ac120V power supply is withstand voltage to match; the capacity of filter capacitor is 1000-1000PF; in the line amplifier power supply circuits; because supply power voltage is brought up to after the 120V; the withstand voltage of protection voltage is answered corresponding raising; therefore the piezo-resistance in the protective circuit of power input or the conducting voltage or the corresponding raising of puncture voltage of discharge tube; so; the conducting voltage of piezo-resistance is that the withstand voltage of 270 volts or discharge tube is 600 volts; in the circuit of output terminal of power supply device; because output voltage is brought up to Ac120V by Ac60V; therefore, should to bring up to puncture voltage be 600 volts to the withstand voltage of the discharge tube of the protective circuit in the circuit of output terminal.
The utility model improves supply voltage, and the system line electric current is reduced, and loss reduces, and transmission range increases, and the relaying power supply reduces, and is particularly suitable for the long Distance Transmission of cable TV, helps system management, reduces system failure rate.The loss that the thunder and lightning disaster is caused eases down to minimum level.
Claims (1)
1; a kind of cable TV stamen line electric supply installation; comprise Ac120V stamen line charger; Ac120V stamen line supply main amplifier; Ac120V stamen line power supply user distribution amplifier; Ac120V stamen line power supply inserter; Ac120V stamen line is crossed the flow pattern equalizer; the Ac120V stamen line flow pattern branch distributor of powering; it is characterized in that: crossing in the current circuit of equalizer and mistake flow pattern branch distributor; filter capacitor in parallel between the High frequency filter inductance; its withstand voltage and Ac120V power supply is withstand voltage to match; the capacity of filter capacitor is 1000-10000PF; the conducting voltage of the piezo-resistance in the protective circuit of the power input in the line amplifier power supply circuits is that the withstand voltage of 270 volts or discharge tube is 600 volts, and in the circuit of output terminal of power supply device, the withstand voltage of the discharge tube of the protective circuit in the circuit of output terminal is 600 volts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98229959U CN2346125Y (en) | 1998-11-25 | 1998-11-25 | Stamen wire electric supply device for wired television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98229959U CN2346125Y (en) | 1998-11-25 | 1998-11-25 | Stamen wire electric supply device for wired television |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2346125Y true CN2346125Y (en) | 1999-10-27 |
Family
ID=33979748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98229959U Expired - Fee Related CN2346125Y (en) | 1998-11-25 | 1998-11-25 | Stamen wire electric supply device for wired television |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2346125Y (en) |
-
1998
- 1998-11-25 CN CN98229959U patent/CN2346125Y/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 |