CN103888697B - TV standby zero-power solid-state relay - Google Patents

Abstract

A TV standby zero-power solid-state relay, including a first input terminal and a second input terminal connected to 220V voltage, the first input terminal is connected to the switching power supply circuit inside the TV set, the second input terminal is divided into two circuits, one circuit Connect to the second pin of the bidirectional thyristor T1 through the photoresistor RT1 and the second resistor R2, and the other way through the first diode D1, the second diode D2, the third diode D3 and the fourth diode The series-parallel circuit of the tube D4 is connected to the first pin of the triac T1, the third pin of the triac T1 is connected to the switching power supply circuit inside the TV, the first diode D1, the second and the second The series-parallel circuit of pole tube D2, third diode D3 and fourth diode D4 is provided with terminal A and terminal B, terminal A is connected to photocoupler IC1 through first resistor R1, and photocoupler IC1 is connected to the second Resistor R2 is connected. The invention can reduce standby power consumption, achieve the purpose of saving electricity and improving resource utilization rate, and can prolong the service life of electric appliances.

Description

TV standby zero power consumption solid state relay

technical field

The invention relates to the technical field of household electrical appliance accessories, in particular to a zero-power consumption solid-state relay for TV standby.

Background technique

The solid-state relays dedicated to solid-state relays can have short-circuit protection, overload protection and overheating protection functions, and combined logic curing packages can realize the intelligent modules required by users and be directly used in the control system. Solid state relays have been widely used in computer peripheral interface equipment, constant temperature systems, temperature adjustment, electric furnace heating control, motor control, numerical control machinery, remote control systems, industrial automation devices; signal lights, dimming, scintillators, lighting stage lighting control systems; instruments Meters, medical equipment, copiers, automatic washing machines; automatic fire protection, security systems, and switching switches for power capacitors used as grid power factor compensation, etc. In addition, they are widely used in chemical industries, coal mines, etc. where explosion-proof, moisture-proof, and corrosion-resistant applications are required .

With the development of the economy, people's living standards are improving day by day, the penetration rate of various household appliances is getting higher and higher, and the problem of standby power consumption of various appliances is becoming more and more prominent. The gap between supply and demand of electric energy has also become larger accordingly. How to reduce standby power consumption is a problem that everyone pays attention to.

Contents of the invention

The technical problem to be solved by the invention is to improve a solid-state relay with simple structure, novel design and low energy consumption for TV standby with zero power consumption.

The technical problem to be solved by the invention is realized by the following technical solutions:

A TV standby zero-power solid-state relay, comprising a first input terminal connected to a 220V voltage and a second input terminal, the first input terminal is connected to a switching power supply circuit inside the TV set, and the second input terminal is divided into Two paths, one path is connected to the second pin of the bidirectional thyristor T1 through the photosensitive resistor RT1 and the second resistor R2, and the other path is connected to the second pin of the bidirectional thyristor T1 through the first diode D1, the second diode D2, the third diode D3 and The series-parallel circuit of the fourth diode D4 is connected to the first pin of the bidirectional thyristor T1, and the third pin of the bidirectional thyristor T1 is connected to the switching power supply circuit inside the TV. The diode D1, the second diode D2, the third diode D3 and the fourth diode D4 are connected in series and in parallel with an A terminal and a B terminal, and the A terminal is connected to the photocoupler via the first resistor R1 Device IC1, the photocoupler IC1 is connected to the second resistor R2;

When working, first when the photosensitive resistor RT1 receives light, the resistance of the photosensitive resistor RT1 will become very small, and the 2-terminal voltage of 220V is divided into two circuits, and one path is connected to the pin 2 of the bidirectional thyristor T1 through the photosensitive resistor RT1 to the resistor R2 , the other 220V path goes through the D1-D4 diode to the pin 1 of the bidirectional thyristor T1. At this time, the photoresistor RT1 receives the light resistance value is very small, so that the bidirectional thyristor T1 is turned on, and the 3 pin of the bidirectional thyristor T1 The output 220V voltage is supplied to the internal switching power supply circuit of the TV to make the power work normally; no matter whether the TV is in the on state or off state at this time, as long as the photosensitive resistor RT1 receives light, the resistance value becomes smaller, so that the bidirectional thyristor T1 remains on. At this time, if the TV is turned on, a voltage of about 1.2-2V will be generated at both ends of A and B of the D1-D4 diode series-parallel circuit. When it is electroluminescent, the resistance value of the photoresistor inside the photocoupler IC1 becomes very small after being illuminated, and the triac T1 is kept in a conduction state through the resistor R2.

If the TV is in the standby state, that is, the remote control is turned off, and the light is very weak at this time, the resistance of the photosensitive resistor RT1 will be very large due to the weak light, and the 220V voltage will make the bidirectional thyristor T1 The starting voltage of pin 2 is cut off; because the TV is in the standby state, the voltage generated at both ends of diodes A and B connected in series and parallel with D1-D4 is very low, so that the internal light-emitting tube of photocoupler IC1 cannot emit light, and photocoupler IC1 The resistance value of the internal photoresistor also becomes large due to no light, so that the bidirectional thyristor T1 remains in the cut-off state, so that when the TV is turned off by remote control, such as when there is no light at night, the TV is in a zero-power standby state, reaching The purpose of saving electricity.

The beneficial effects of the present invention are: the present invention has simple structure and novel design, can reduce standby power consumption, achieve the purpose of saving electricity and improving resource utilization rate, and can prolong the service life of electric appliances.

Description of drawings

Fig. 1 is the circuit schematic diagram of the invention.

detailed description

In order to make the technical means, creative features, goals and effects of the invention easy to understand, the invention will be further elaborated below in combination with specific diagrams.

As shown in Figure 1, a TV standby zero power consumption solid state relay includes a first input terminal connected to a 220V voltage and a second input terminal, the first input terminal is connected to the switching power supply circuit inside the TV set, so The above-mentioned second input end is divided into two paths, one path is connected to the second pin of the bidirectional thyristor T1 through the photosensitive resistor RT1 and the second resistor R2, and the other path is connected to the second pin of the bidirectional thyristor T1 through the first diode D1, the second diode D2, the second The series-parallel circuit of the three diodes D3 and the fourth diode D4 is connected to the first pin of the triac T1, and the third pin of the triac T1 is connected to the switching power supply inside the TV circuit, the first diode D1, the second diode D2, the third diode D3 and the fourth diode D4 are connected in series and parallel with an A terminal and a B terminal, and the A terminal is passed through the first The resistor R1 is connected to the photocoupler IC1, and the photocoupler IC1 is connected to the second resistor R2;

When working, first when the photosensitive resistor RT1 receives light, the resistance of the photosensitive resistor RT1 will become very small, and the 2-terminal voltage of 220V is divided into two circuits, and one path is connected to the pin 2 of the bidirectional thyristor T1 through the photosensitive resistor RT1 to the resistor R2 , the other 220V path goes through the D1-D4 diode to the pin 1 of the bidirectional thyristor T1. At this time, the photoresistor RT1 receives the light resistance value is very small, so that the bidirectional thyristor T1 is turned on, and the 3 pin of the bidirectional thyristor T1 The output 220V voltage is supplied to the internal switching power supply circuit of the TV to make the power work normally; no matter whether the TV is in the on state or off state at this time, as long as the photosensitive resistor RT1 receives light, the resistance value becomes smaller, so that the bidirectional thyristor T1 remains on. If the TV is turned on at this time, a voltage of about 1.2-2V will be generated at both ends of A and B of the D1-D4 diode series-parallel circuit. When it is electroluminescent, the resistance value of the photoresistor inside the photocoupler IC1 becomes very small after being illuminated, and the triac T1 is kept in a conduction state through the resistor R2.

If the TV is in the standby state, that is, the remote control is turned off, and the light is very weak at this time, the resistance of the photosensitive resistor RT1 will be very large due to the weak light, and the 220V voltage will make the bidirectional thyristor T1 The starting voltage of pin 2 is cut off; because the TV is in the standby state, the voltage generated at both ends of diodes A and B connected in series and parallel with D1-D4 is very low, so that the internal light-emitting tube of photocoupler IC1 cannot emit light, and photocoupler IC1 The resistance value of the internal photoresistor also becomes large due to no light, so that the bidirectional thyristor T1 remains in the cut-off state, so that when the TV is turned off by remote control, such as when there is no light at night, the TV is in a zero-power standby state, reaching The purpose of saving electricity.

The basic principles and main features of the invention and advantages of the invention have been shown and described above. Those skilled in the art should understand that the invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the invention. On the premise of not departing from the spirit and scope of the invention, the invention will have various changes and changes. Improvements, these changes and improvements all fall within the scope of the claimed invention. The claimed scope of the invention is defined by the appended claims and their equivalents.

Claims (1)

1. a kind of TV standby zero-power solid-state relay, it is characterised in that：Including the first input being connected with 220V power supplys End and the second input, the first input end are connected to the switching power circuit of inside television, second input point Into two-way, bidirectional triode thyristor (T1) second pin, Ling Yilu are connected to through photo resistance (RT1) and second resistance (R2) all the way Through the circuit after the first diode (D1), the second diode (D2), the 3rd diode (D3) and the 4th diode (D4) connection in series-parallel The first pin of bidirectional triode thyristor (T1) is connected to, wherein the negative pole of the first diode (D1) is being connected to the 3rd diode (D3) just Pole, the 3rd diode (D3) negative pole be respectively connected to the positive pole of the 4th diode (D4), the positive pole of the first diode (D1) and The negative pole of second diode (D2), the negative pole of the 4th diode (D4) is connected to the second diode (D2) positive pole, described double The switching power circuit of inside television, in addition to side a and b, described first are connected to the 3rd pin of controllable silicon (T1) The positive pole of the negative pole of diode (D1) and the 3rd diode (D3) connects with A ends, the positive pole of second diode (D2) and The negative pole of three diodes (D3) connects with B ends, and the A ends are connected to hair inside photoelectrical coupler (IC1) through first resistor (R1) The positive terminal of light pipe, and B ends, the photoelectrical coupler are connected to by the negative pole end of photoelectrical coupler (IC1) internal illumination pipe (IC1) internal photo resistance is connected with A ends and second resistance (R2).