CN2419766Y - Television power supply suitable for low power consumption at ready status - Google Patents
Television power supply suitable for low power consumption at ready status Download PDFInfo
- Publication number
- CN2419766Y CN2419766Y CN 00213475 CN00213475U CN2419766Y CN 2419766 Y CN2419766 Y CN 2419766Y CN 00213475 CN00213475 CN 00213475 CN 00213475 U CN00213475 U CN 00213475U CN 2419766 Y CN2419766 Y CN 2419766Y
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- CN
- China
- Prior art keywords
- power supply
- voltage stabilizing
- chip
- connects
- stabilizing triode
- 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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- Television Receiver Circuits (AREA)
- Rectifiers (AREA)
Abstract
The utility model relates to a television power supply suitable for low power consumption at ready status. A chip of a control circuit uses TDA4605-3. A switch transformer primary tap of the power supply at the TV ready status is connected with a voltage-stabilizing triode through rectification filtration. A voltage-stabilizing output end of the voltage-stabilizing triode is connected with a power supply foot of the control circuit chip. The TV standby power supply is matched and designed with the TDA4605-3 chip of siemens corporation. The utility model is characterized in that the chip can operate normally at the state of standby power supply, and the operation is safe. Meanwhile, the circuitry structure design is simple, the cost is low and the requirement of the TV manufacturers can be met.
Description
The utility model belongs to television set, and the power supply of color television set especially is specifically related to the design of stand-by circuit.
In the existing TV set power design, stand-by circuit is arranged all generally before the utility model is made, make Switching Power Supply when standby, be in low power consumpting state.TDA4605-3 chip at Siemens Company has also designed some stand-by circuits.But general power supply all adopts the IC supply power mode of self-supporting biasing, power supply is when operate as normal, give the TDA4605-3 chip power supply from a pin of primary through rectifying and wave-filtering, simultaneously when holding state, because each output voltage of transformer all significantly reduces, the voltage of this transformer output pin deficiency so that TDA4605-3 chip operate as normal.And the irregular working of TDA4605-3 chip can't make television set return to normal condition from holding state.This problem is badly in need of solving.Television set competition at present is constantly fierce, and the requirement of minimization of cost is more and more important; Also require the design cost of Switch Power Treat Electromechanical Way can not be too high.
The purpose of this utility model is for addressing the above problem, provide a kind of circuit simple, make power supply when holding state, chip energy operate as normal and the TV set power that is suitable for low-power consumption standby with low cost.
For achieving the above object, the utility model is a kind of TV set power that is suitable for low-power consumption standby that realizes like this, it is made up of current rectifying and wave filtering circuit, switch transformer, integrated package of pressure-stabilizing, sampling amplification circuit and control circuit etc., wherein the chip of control circuit adopts TDA4605-3, an elementary tap of above-mentioned switch transformer connects the voltage stabilizing triode by rectifying and wave-filtering, and the output end of pressure-stabilizing of this voltage stabilizing triode connects the power supply pin of this control circuit chip.
After the loop of inductance and diode series connection back shunt capacitance is passed through in an elementary tap of above-mentioned switch transformer, the collector electrode that connects above-mentioned voltage stabilizing triode, also pass through capacity earth, the base stage that also connects this voltage stabilizing triode by resistance, the base stage of this voltage stabilizing triode is also by diode ground connection, the emitter of this voltage stabilizing triode connects the power supply pin of said chip, and also by capacity earth, the emitter of this voltage stabilizing triode also connects its collector electrode by diode to the emitter of this voltage stabilizing triode.
Advantage of the present utility model and base stage effect are, at TDA4605-3 chip design, the coupling of Siemens Company.Can be under the state of power supply standby chip still can operate as normal, and safe and reliable.The simplicity of design of this circuit simultaneously, cost is low; Can satisfy the requirement of television set manufacturer.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is the structured flowchart of TV set power;
Fig. 2 is the circuit diagram of an embodiment of the utility model.
As shown in Figure 1, a kind of low-power consumption standby TV set power, it is made up of current rectifying and wave filtering circuit, switch transformer, integrated package of pressure-stabilizing, sampling amplification circuit and control circuit etc., and wherein the chip N01 of control circuit adopts TDA4605-3.
As shown in Figure 2, voltage is taken out in a tap of the 5th pin that switch transformer is elementary, connects voltage stabilizing triode V01 by rectifying and wave-filtering, and the output end of pressure-stabilizing of this voltage stabilizing triode V01 connects the power supply pin N01-6 of this control circuit chip N01.
Its concrete circuit is, after the loop of inductance L 01 and diode VD02 series connection back shunt capacitance C03 is passed through in an elementary tap of switch transformer, the collector electrode that connects above-mentioned voltage stabilizing triode V01, also by capacitor C 02 ground connection, the base stage that also connects this voltage stabilizing triode V01 by resistance R 01, the base stage of this voltage stabilizing triode V01 is also by diode VD03 ground connection, the emitter of this voltage stabilizing triode V01 connects the power supply pin N01-6 of said chip N01, also by capacitor C 01 ground connection, the emitter of this voltage stabilizing triode V01 also connects its collector electrode by diode VD01 to the emitter of this voltage stabilizing triode V01.
During use, take out voltage from elementary the 5th pin of transformer, after process VD02 and C02 rectification, the filtering, again through the required voltage of V01 voltage stabilizing output IC, this voltage enough big (approximately 60V) is so that power supply still is enough to guarantee the IC power supply when holding state transformer output voltage reduces.
Claims (2)
1. TV set power that is suitable for low-power consumption standby, it is made up of current rectifying and wave filtering circuit, switch transformer, integrated package of pressure-stabilizing, sampling amplification circuit and control circuit etc., wherein the chip of control circuit (N01) adopts TDA4605-3, it is characterized in that: an elementary tap of above-mentioned switch transformer connects voltage stabilizing triode (V01) by rectifying and wave-filtering, and the output end of pressure-stabilizing of this voltage stabilizing triode (V01) connects the power supply pin (N01-6) of this control circuit chip (N01).
2. low-power consumption standby TV set power according to claim 1, it is characterized in that: after the loop of inductance (L01) and diode (VD02) series connection back shunt capacitance (C03) is passed through in an elementary tap of above-mentioned switch transformer, the collector electrode that connects above-mentioned voltage stabilizing triode (V01), also by electric capacity (C02) ground connection, the base stage that also connects this voltage stabilizing triode (V01) by resistance (R01), the base stage of this voltage stabilizing triode (V01) is also by diode (VD03) ground connection, the emitter of this voltage stabilizing triode (V01) connects the power supply pin (N01-6) of said chip (N01), also by electric capacity (C01) ground connection, the emitter of this voltage stabilizing triode (V01) also connects its collector electrode by diode (VD01) to the emitter of this voltage stabilizing triode (V01).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00213475 CN2419766Y (en) | 2000-02-02 | 2000-02-02 | Television power supply suitable for low power consumption at ready status |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00213475 CN2419766Y (en) | 2000-02-02 | 2000-02-02 | Television power supply suitable for low power consumption at ready status |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2419766Y true CN2419766Y (en) | 2001-02-14 |
Family
ID=33579764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00213475 Expired - Fee Related CN2419766Y (en) | 2000-02-02 | 2000-02-02 | Television power supply suitable for low power consumption at ready status |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2419766Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102737606A (en) * | 2012-07-12 | 2012-10-17 | 福建捷联电子有限公司 | Circuit structure for reducing standby power consumption of display device |
-
2000
- 2000-02-02 CN CN 00213475 patent/CN2419766Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102737606A (en) * | 2012-07-12 | 2012-10-17 | 福建捷联电子有限公司 | Circuit structure for reducing standby power consumption of display device |
| CN102737606B (en) * | 2012-07-12 | 2014-04-16 | 福建捷联电子有限公司 | Circuit structure for reducing standby power consumption of display device |
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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 |