CN202190338U - Standby control circuit for television switch power source - Google Patents
Standby control circuit for television switch power source Download PDFInfo
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- CN202190338U CN202190338U CN2011201189991U CN201120118999U CN202190338U CN 202190338 U CN202190338 U CN 202190338U CN 2011201189991 U CN2011201189991 U CN 2011201189991U CN 201120118999 U CN201120118999 U CN 201120118999U CN 202190338 U CN202190338 U CN 202190338U
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- triode
- power supply
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- control circuit
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Abstract
The utility model discloses a standby control circuit for a television switch power source. On and off of a demagnetizing resistor and a demagnetizing coil on a demagnetizing circuit in a switch power circuit are controlled by a contact switch. The standby control circuit is formed by connecting the contact switch, six triodes, two diodes, a photoelectric coupler and a plurality of resistors, and resolves the problems that a switch power circuit in the prior art is over-high in standby power consumption and cannot meet domestic and international energy efficiency standards.
Description
Technical field:
The utility model relates to field of television, relates in particular to the readiness control circuit of television set Switching Power Supply.
Background technology:
As everybody knows, the readiness control circuit of television set Switching Power Supply is that people use operation and a circuit increasing to power supply for ease, and the efficient of its work directly has influence on the watt level that the television set standby is consumed.
At present; The mains switch power supply of using in the domestic colour TV comprises input circuit, degaussing circuit, rectification circuit, filter circuit, start-up circuit, power supply vibration adjustment circuit, voltage stabilizing control adjustment circuit, output loading circuit, readiness control circuit totally nine circuit formations basically; In actual use; The power of this Switching Power Supply standby is higher about about 7W; Do not meet the efficiency standard-required of countries such as Chinese efficiency standard and European Union, " family expenses and the ecological designing requirement of office with electronic electric equipment standby and shutdown mode power consumption " regulations came into force on January 7th, 2009.Regulations of rules, the phase I: after regulations come into force 1 year, power consumption must not surpass 1 watt under shutdown or the standby mode that activates again, had the standby mode power consumption that information or state show and must not surpass 2W.Second stage: after regulations come into force 4 years; Power consumption must not surpass 0.5W under the standby mode of shutdown or activation again; And the standby mode power consumption with information or state demonstration must not surpass 1W, and visible existing most homemade colour TV exists can not satisfy above-mentioned requirement.
The utility model content:
In order to cater to the needs of market and country, international efficiency standard; The utility model is to provide a kind of readiness control circuit of television set Switching Power Supply; What solve that foregoing circuit exists exists the too high problem of holding state power consumption; The characteristics of said circuit are: power consumption is lower than 1W in the time of can making the switching power circuit word open standby, but can guarantee that television set works under holding state, and can return to normal operating conditions.Its technical scheme is following:
A kind of readiness control circuit of television set Switching Power Supply; With the break-make between field-discharge resistance and the anti-magnetized coil on the degaussing circuit in the contact-making switch control switching circuit; This circuit is connected into by contact-making switch and 6 triodes, 2 diodes, 1 photoelectrical coupler, some resistance; Describe for ease, said 6 triodes divide another name the 1st, the 2nd, the 3rd, the 4th, the 5th, the 6th triode.
Coil one termination of said contact-making switch is with reference to ground; The collector electrode of another termination the 1st triode; The emitter of this triode is divided into two-way; One the tunnel is parallelly connected 1 resistance between emitter and base stage, flows through and be connected with power supply output+8V end behind the resistance in another road, and base stage is connected and is connected with the collector electrode of the 2nd triode behind the resistance.
The emitter of said the 2nd triode is connected to reference to ground; Microprocessor MCU goes up the POWER pin and is connected in base stage and the television set; Collector electrode also is divided into two-way on the equipotential of the node that is connected with the 1st transistor base, two-way is respectively connected and is connected with the base stage of the 3rd triode or the 4th triode behind the resistance.
The parallelly connected resistance of the base stage of said the 3rd triode with inter-collector, collector electrode and power supply output+15V end is connected, and emitter is connected with+load circuit that 15V holds.
The parallelly connected resistance of the base stage of said the 4th triode with inter-collector, collector electrode and power supply output+27V end is connected, and emitter is connected with the load circuit of+27V.
Aforementioned microprocessor MCU goes up the POWER pin and connects and be connected with the base stage of the 5th triode behind the resistance; The emitter of the 5th triode connects with reference to ground; Collector electrode is divided into two-way, and one the road connects is connected with power supply output+8V end behind the resistance, and one the tunnel is connected with the base stage of the 6th triode.
The emitter of said the 6th triode connects with reference to ground; Collector electrode is connected successively and is connected with 2 pin of photoelectrical coupler behind a general-purpose diode and the voltage stabilizing didoe; Be connected with power supply output+8V end behind 1 resistance of 1 pin series connection of optocoupler, 3 pin of optocoupler, 4 pin are connected with the power supply oscillation control circuit.
Through such improvement; When television set sends standby command; Middle microprocessor MCU goes up POWER pin output low level, and readiness control circuit is divided into the two-way effect, the triode of leading up to control power supply output+15V ,+27V and degaussing circuit disconnection; Lead up to 2 pin voltages of triode and voltage stabilizing didoe control optocoupler and then the work period that control power supply oscillating circuit operating frequency prolongs power supply, the stand-by power consumption during with the standby of assurance television set is below 1W.
The beneficial effect of the utility model is: provide a kind of and can when the television set standby, guarantee the television set readiness control circuit of consumed power below 1W.
Description of drawings:
1, Fig. 1 is the circuit diagram of the readiness control circuit of the said television set Switching Power Supply of the utility model;
Embodiment:
Below in conjunction with accompanying drawing, the readiness control circuit of the novel described television set Switching Power Supply of this reality is further described.
With reference to accompanying drawing 1; As shown in the figure; The readiness control circuit of said television set Switching Power Supply; With the break-make between field-discharge resistance and the anti-magnetized coil on the degaussing circuit in the contact-making switch control switching circuit, this circuit is connected into by contact-making switch and 6 triodes, 2 diodes, 1 photoelectrical coupler, some resistance.
Coil one termination of said contact-making switch K500 is with reference to ground; The collector electrode of another termination the 1st triode V5; The emitter of this triode is divided into two-way; One the tunnel is parallelly connected 1 resistance R 1 between emitter and base stage, and a resistance R 3 backs of flowing through, another road are held with power supply output+8V and are connected, and base stage is connected, and a resistance R 2 is back to be connected with the collector electrode of the 2nd triode V1.
The emitter of said the 2nd triode V1 is connected to reference to ground; Microprocessor MCU goes up the POWER pin and is connected in base stage and the television set; Collector electrode also is divided into two-way on the equipotential of the node that is connected with the 1st triode V5 base stage, two-way is connected and is connected with the base stage of the 3rd triode V3 or the 4th triode V2 respectively behind a resistance R 6 or the R5.
The parallelly connected resistance R 7 of the base stage of said the 3rd triode V3 with inter-collector, collector electrode and power supply output+15V end is connected, and emitter is connected with+load circuit that 15V holds.
The parallelly connected resistance R 4 of the base stage of said the 4th triode V2 with inter-collector, collector electrode and power supply output+27V end is connected, and emitter is connected with the load circuit of+27V.
The last POWER pin of microprocessor MCU and being connected in the base stage of said the 5th triode (V4) resistance of series connection (R8) back and the television set; The emitter of this triode connects with reference to ground; Collector electrode is divided into two-way; One road resistance R 10 back of connecting is held with power supply output+8V and is connected, and one the tunnel is connected with the base stage of the 6th triode V6.
The emitter of said the 6th triode V6 connects with reference to ground; Collector electrode is connected successively and is connected with 2 pin of photoelectrical coupler N501 behind a general-purpose diode VD1 and the voltage stabilizing didoe VD2; 1 pin of an optocoupler resistance R 9 back of connecting is held with power supply output+8V and is connected, and 3 pin of optocoupler, 4 pin are connected with the power supply oscillation control circuit.
Claims (7)
1. the readiness control circuit of television set Switching Power Supply; It is characterized in that: with the break-make between field-discharge resistance and the anti-magnetized coil on the degaussing circuit in the contact-making switch control switching circuit; This circuit is connected into by contact-making switch and 6 triodes, 2 diodes, 1 photoelectrical coupler, some resistance, and said 6 triodes divide another name the 1st, the 2nd, the 3rd, the 4th, the 5th, the 6th triode.
2. the readiness control circuit of television set Switching Power Supply according to claim 1; It is characterized in that: coil one termination of said contact-making switch K500 is with reference to ground; The collector electrode of another termination the 1st triode (V5), the emitter of this triode is divided into two-way, and one the tunnel is a parallelly connected resistance (R1) between emitter and base stage; Flowing through in another road, a resistance (R3) is back to be connected with power supply output+8V end, and base stage is connected, and a resistance (R2) is back to be connected with the collector electrode of the 2nd triode (V1).
3. the readiness control circuit of television set Switching Power Supply according to claim 1; It is characterized in that: the emitter of said the 2nd triode (V1) is connected to reference to ground; Microprocessor MCU goes up the POWER pin and is connected in base stage and the television set; Collector electrode also is divided into two-way on the equipotential of the node that is connected with the 1st triode (V5) base stage, two-way is connected and is connected with the base stage of the 3rd triode (V3) or the 4th triode (V2) respectively behind the resistance (R6 or R5).
4. the readiness control circuit of television set Switching Power Supply according to claim 1; It is characterized in that: the parallelly connected resistance of the base stage of said the 3rd triode (V3) (R7) with inter-collector; Collector electrode and power supply output+15V end is connected, and emitter is connected with+load circuit that 15V holds.
5. the readiness control circuit of television set Switching Power Supply according to claim 1; It is characterized in that: the parallelly connected resistance of the base stage of said the 4th triode (V2) (R4) with inter-collector; Collector electrode and power supply output+27V end is connected, and emitter is connected with the load circuit of+27V.
6. the readiness control circuit of television set Switching Power Supply according to claim 1; It is characterized in that: the last POWER pin of microprocessor MCU and being connected in the base stage of said the 5th triode (V4) resistance of series connection (R8) back and the television set; The emitter of this triode connects with reference to ground; Collector electrode is divided into two-way, and one road a connect resistance (R10) back is held with power supply output+8V and is connected, and one the tunnel is connected with the base stage of the 6th triode (V6).
7. the readiness control circuit of television set Switching Power Supply according to claim 1; It is characterized in that: the emitter of said the 6th triode (V6) connects with reference to ground; A collector electrode general-purpose diode (VD1) and a voltage stabilizing didoe (VD2) back of connecting successively is connected with 2 pin of photoelectrical coupler N501; 1 pin of optocoupler is connected, and a resistance (R9) is back to be connected with power supply output+8V end, and 3 pin of optocoupler, 4 pin are connected with the power supply oscillation control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201189991U CN202190338U (en) | 2011-04-21 | 2011-04-21 | Standby control circuit for television switch power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201189991U CN202190338U (en) | 2011-04-21 | 2011-04-21 | Standby control circuit for television switch power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202190338U true CN202190338U (en) | 2012-04-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201189991U Expired - Fee Related CN202190338U (en) | 2011-04-21 | 2011-04-21 | Standby control circuit for television switch power source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202190338U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023280011A1 (en) * | 2021-07-05 | 2023-01-12 | 南京中车浦镇海泰制动设备有限公司 | Highly reliable sleep circuit based on frequency control |
-
2011
- 2011-04-21 CN CN2011201189991U patent/CN202190338U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023280011A1 (en) * | 2021-07-05 | 2023-01-12 | 南京中车浦镇海泰制动设备有限公司 | Highly reliable sleep circuit based on frequency control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 528234, Guangdong, Foshan City, Nanhai District, Songgang pine summer Industrial Park Road Foundation Patentee after: Guangdong shengzhiyuan digital electronics Limited by Share Ltd Address before: 528200, Guangdong, Foshan City, Nanhai District, Songgang pine summer Industrial Park Road Foundation Patentee before: Guangdong Shengzhiyuan Digital Electronics Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120411 Termination date: 20140421 |