CN2142249Y - Remote-control unit power supply and on-off control apparatus for television - Google Patents
Remote-control unit power supply and on-off control apparatus for television Download PDFInfo
- Publication number
- CN2142249Y CN2142249Y CN 92228140 CN92228140U CN2142249Y CN 2142249 Y CN2142249 Y CN 2142249Y CN 92228140 CN92228140 CN 92228140 CN 92228140 U CN92228140 U CN 92228140U CN 2142249 Y CN2142249 Y CN 2142249Y
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- China
- Prior art keywords
- rectifier
- electronic switch
- power supply
- input
- control
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Abstract
The utility model relates to the television receiving technology. The AC 220V voltage is added to the input end of a rectifier separately through capacitors C1 and C2. The output voltage of the rectifier is supplied to the input end of a first voltage stabilizer after being filtered by a filter capacitor, the output voltage of the first voltage stabilizer is supplied to the input end of a second voltage stabilizer, and the output voltage of the second voltage stabilizer is supplied to the power end of an infrared receiving CPU. The stand by/start-up control ends of the infrared receiving CPU are connected with the input end of an electronic switch, and the control end of the electronic switch is connected with the control end of a switching power supply of a main power supply of the television. A neon bulb is connected in a bridge connection mode with the two input ends of a remote control power rectifier.
Description
The utility model relates to Television Reception Technology.
At present the TV remote-control power supply of using is 1. to adopt rectifiers direct rectification goes out direct voltage to the 220V alternating current, with the big wattage resistance drop required dc low-voltage of life of cutting down output, offers infrared reception CPU after voltage stabilizing then.2. adopt transformer with the step-down of 220V alternating current, go out dc low-voltage by rectifier rectification again, after voltage stabilizing, offer infrared reception CPU.The shortcoming of above-mentioned the 1st kind of method is that owing to adopt resistance step-down power consumption big, when television set was in " wait " operating state for a long time, the dropping resistor temperature rise was too high easily, was unallowed like this.The shortcoming of the 2nd kind of method is that the volume of TV remote-control unit power supply is bigger.
The purpose of this utility model be to provide a kind of low in energy consumption, reliability is high, volume is little, lightweight TV remote-control unit power supply and opening/closing control device.
The purpose of this utility model is achieved in that alternating current 220V voltage is added on the input of rectifier by decompression capacitor C1 and C2 respectively, and capacitor C 1, C2 keep apart TV remote-control unit power supply and TV set power.Offer the input of first pressurizer behind the output voltage process filtering capacitor filtering of rectifier, the output voltage of first pressurizer offers the input of second pressurizer, the output voltage of second pressurizer offers the power end of infrared reception CPU, the input of the standby of infrared reception CPU/start control termination electronic switch, the control end of the control termination television set Switching Power Supply of electronic switch.At neon bulb of rectifier two input cross-over connections, when load open circuit, the alternating voltage of rectifier input can raise, and neon bulb conducting at this moment plays a protective role.
The utility model adopts two electric capacity that alternating current 220V voltage is reduced to low pressure, and television set is in " wait ", and the power consumption during operating state is very low, and adopts two capacitance decompressions that the requirement of withstand voltage of electric capacity is reduced by one times.Withstand voltage when closing the ac capacitor of requirement when selecting for use, the power supply reliability height, the volume of power supply is little simultaneously.
Concrete structure of the present utility model is provided by following examples and accompanying drawing.
Fig. 1 is a circuit structure diagram of the present utility model.
Fig. 2 is the circuit structure diagram of first pressurizer.
Fig. 3 is the circuit structure diagram of electronic switch.
Specify structure of the present utility model below in conjunction with accompanying drawing.
The utility model is by capacitor C 1(1), C2(2), rectifier (3), filter capacitor C3(4), first pressurizer (5), second pressurizer (9), infrared reception CPU(11), electronic switch (14), neon bulb (25) form.
Two ends of alternating current 220V voltage are respectively by decompression capacitor C1(1), C2(2) receive two inputs of rectifier (3) after the step-down, one end ground connection of rectifier (3), the input of its output termination first pressurizer (5), the ground end ground connection of first pressurizer (5), the input of its output termination second pressurizer (9), the infrared reception CPU(11 of second pressurizer (9) output termination) power end Vcc(12), infrared reception CPU(11) " wait/start " control end (13) connects the input (15) of electronic switch (14), one control end (16) ground connection of electronic switch (14), its another control end (23) connect the base stage of Switching Power Supply controlled stage transistor (26) in the television set main power source (21).At rectifier neon bulbs of (3) two input cross-over connections (25), when load open circuit, the alternating voltage of rectifier (3) input can raise, and neon bulb igniting at this moment plays a protective role.
The shunt regulator that first pressurizer (5) can be made up of transistor, the series voltage regulator that can also form by transistor.Adopt shunt regulator efficient height.Television set is in " wait " during state, and two control ends (16) of electronic switch (14) and (24) are connected.Electronic switch (14) is made up of the first transistor (17) and transistor seconds (18); The base stage of the first transistor (17) is the input (15) of electronic switch (14), its grounded emitter, its collector electrode connects the base stage of transistor seconds (18), the emission of transistor seconds (18) is a control end (16) ground connection of electronic switch (14) very, the base stage of transistor seconds (18) links to each other with an end of resistance (19) and (20), resistance (20) other end ground connection, the dc output end of the rectifier (22) of another termination television set main power source (21) of resistance (19), the current collection of transistor seconds (18) be another control end (24) of electronic switch (14) very.When " wait/switch " control end (13) the hot outer CPU(11 that receives) was low level, two control ends (16) of electronic switch (14) and (24) were connected; Two control ends (16) and (24) are open-circuit condition during for high level.
First pressurizer is by resistance (6), (7), and voltage stabilizing didoe (8), transistor (10) are formed.One end of resistance (6), (7) links to each other, the emitter of another termination transistor (10) of resistance (6), the negative pole of another termination voltage stabilizing didoe (8) of resistance (7) and the base stage of transistor (10), the plus earth of voltage stabilizing didoe (8), the grounded collector of transistor (10).
Claims (3)
1, a kind of TV remote-control unit power supply and opening/closing control device, it is characterized in that: two ends of alternating current 220V voltage are received capacitor C 1 (1) respectively, the end of C2 (2), capacitor C 1 (1), two ends in addition of C2 (2) are received two inputs of rectifier (3) respectively, one end ground connection of rectifier (3), the input of another termination first pressurizer (5), the ground end ground connection of first pressurizer (5), the input of its output termination second pressurizer (9), the power end Vcc (12) of the infrared reception CPU of the output termination of second pressurizer (9) (11), " wait/start " control end (13) of infrared reception CPU (11) connects the input (15) of electronic switch (14), electronic switch (14) one control end ground connection, its another control end (24) connects the base stage of the controlled stage transistor (26) of the Switching Power Supply (21) in the television set main power source (21), the power end of electronic switch (23) connects the dc output end of rectifier (22) in the television set main power source (21), at neon bulbs of two input cross-over connections (25) of rectifier (3).
2, TV remote-control unit power supply according to claim 1 and opening/closing control device, it is characterized in that: alternating current 220V voltage two ends are received capacitor C 1(1 respectively), C2(2) an end, capacitor C 1(1), C2(2) the other end connect two inputs of rectifier (3) respectively.
3, TV remote-control according to claim 1 unit power supply and opening/closing control device, it is characterized in that: electronic switch (14) is made up of the first transistor (17) and transistor seconds (18), the base stage of the first transistor (17) is the input (15) of electronic switch (14), its grounded emitter, its collector electrode connects the base stage of transistor seconds (18), the emission of transistor seconds (18) is the output control terminal (24) of electronic switch (14) very, the base stage of transistor seconds (18) links to each other with an end of resistance (19) and (20), resistance (20) other end ground connection, the dc output end of the rectifier (22) of another termination television set main power source (21) of resistance (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92228140 CN2142249Y (en) | 1992-07-23 | 1992-07-23 | Remote-control unit power supply and on-off control apparatus for television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92228140 CN2142249Y (en) | 1992-07-23 | 1992-07-23 | Remote-control unit power supply and on-off control apparatus for television |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2142249Y true CN2142249Y (en) | 1993-09-15 |
Family
ID=33771887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92228140 Expired - Fee Related CN2142249Y (en) | 1992-07-23 | 1992-07-23 | Remote-control unit power supply and on-off control apparatus for television |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2142249Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110418130A (en) * | 2018-04-26 | 2019-11-05 | 深圳光峰科技股份有限公司 | A kind of circuit breaking test device |
-
1992
- 1992-07-23 CN CN 92228140 patent/CN2142249Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110418130A (en) * | 2018-04-26 | 2019-11-05 | 深圳光峰科技股份有限公司 | A kind of circuit breaking test device |
| CN110418130B (en) * | 2018-04-26 | 2021-10-22 | 深圳光峰科技股份有限公司 | Power-off testing 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 |