CN104135793A - Circuit using power switch to adjust electrical parameters - Google Patents

Abstract

The invention discloses a circuit for adjusting electric appliance parameters by using a power switch, which realizes adjusting the working parameters of the electric appliance by rapidly and repeatedly disconnecting and closing the power switch. The circuit includes commercial power, a power switch, a working power supply, a backup power supply, a power failure detector, a regulator, and a load. The regulator uses the backup power supply to maintain normal operation when the power switch is turned off, and the power failure detector detects the low and high level signals generated by the working power supply due to the power switch opening and closing, and provides them to the regulator, and the regulator generates control signals to adjust the load Working parameters. Mainly used for dimming lights, ceiling fans, multifunctional decorative lights, etc.

Description

A circuit that uses a power switch to adjust electrical parameters

technical field

The invention relates to a circuit for adjusting electrical parameters, in particular to a circuit for adjusting electrical parameters by using a power switch.

Background technique

LED lamps have developed into the era of popularized lighting. With the advantages of energy saving, environmental protection, high brightness and long life, the prospect is extremely broad, and the popularization of indoor lighting has become a trend. Although LEDs are all light-emitting diodes, due to the inconsistency of the process of each LED manufacturer, even the process of the same manufacturer at different times is different, resulting in inconsistencies in luminous intensity, driving current, and heat dissipation capabilities. It is difficult to unify the drivers of light LED lighting lamps. Different manufacturers of dimmable LED lighting lamps use dimmers with different circuit parameters, which increases the difficulty of installation and use. Residential decoration walls are generally pre-installed with standard household wall switches, which can be used directly by using commonly used fluorescent lamps, energy-saving lamps and other electrical appliances that only need to be turned on and off. When it is necessary to adjust the working parameters of the electrical appliances, it is necessary to replace the special controller, which is troublesome to install and use.

Contents of the invention

In order to solve the problem that the power switch can only operate the start and stop of the electric appliance but cannot adjust the working parameters of the electric appliance, the present invention provides a circuit capable of adjusting the working parameters of the electric appliance by rapidly and repeatedly opening and closing the power switch.

To achieve the above object, the present invention is achieved in that:

As shown in Figure 1, the circuit that uses the power switch to adjust electrical parameters includes mains power, power switch, working power supply, backup power supply, power failure detector, regulator, and load. The power switch is a power switch such as a wall switch or a ship type switch. When the power switch is closed, the mains supplies power to the working power supply, and the working power supply supplies power to the backup power supply, power failure detector, regulator, and load. The backup power supply maintains the normal operation of the regulator when the power switch is turned off, and the power failure detector When it is disconnected and closed, it detects the working power and converts it into low and high levels and sends it to the regulator. The regulator judges the disconnection and closure of the power switch, and converts it into an adjustment signal to adjust the parameters of the load. The load is dimming LED lights, ceiling fan motors, multi-functional decorative lights and other devices that need to adjust parameters. Working power supply, backup power supply, power failure detector, regulator and load are provided to users. The power switch can use existing switches such as wall switches and boat switches, and can also be provided to users as a part of the entire product.

The beneficial effect of the present invention is that the user can install and use the dimming LED lighting lamp as an ordinary lighting lamp, and can also quickly and repeatedly turn off and close the power switch to adjust the brightness according to the needs of the use occasion, which is beneficial to energy saving, consumption reduction, and improvement of LED lighting. The service life of the lamp is beneficial; after using the present invention, when the power switch is closed, the electrical appliances work; when the power switch is disconnected, the electrical appliances stop working; The function of adjusting the working parameters of electrical appliances is added, and the installation and operation are simple and convenient.

Description of drawings

Figure 1 is a block diagram of the working principle of using the power switch to adjust electrical parameters.

Figure 2 is the principle diagram 1 for adjusting the brightness of LED lighting with a power switch.

Figure 3 is the schematic diagram 2 of adjusting the brightness of the LED lighting with the power switch.

Figure 4 is a schematic diagram of using the power switch to adjust the speed of the ceiling fan.

Figure 5 shows the schematic for adjusting multiple loads using power switches.

Detailed ways

Further illustrate the present invention below in conjunction with accompanying drawing.

Specific implementation mode one:

As shown in Figure 2, L is the live line of the mains, N is the neutral line of the mains, L is connected to one end of the power switch SW1, and the other end of the power switch SW1 is connected to the capacitor C1, the resistor R1, the T2 pole of the triac VS1, The T2 pole of the bidirectional thyristor VS2 and the T2 pole of the bidirectional thyristor VS3 are connected. The T1 pole of the bidirectional thyristor VS1 is connected with the resistor R4 and the capacitor C5. The T1 pole of the bidirectional thyristor VS2 is connected with the resistor R5 and the capacitor C6. The T1 pole of the bidirectional thyristor VS3 is connected with the resistor R6 and the capacitor C7. Mains N terminal and Zener diode DZ1 positive pole, capacitor C2, resistor R3, capacitor C3 negative pole, farad capacitor BT1 negative pole, capacitor C4, integrated block IC1 pin 8, integrated block IC1 pin 13, diode D5 negative pole, diode D6 positive pole connected. The control pole of the bidirectional thyristor VS1 is connected with the resistor R7. Resistor R7 is connected to pin 2 of integrated block IC1. The control electrode of the bidirectional thyristor VS2 is connected with the resistor R8. Resistor R8 is connected to pin 3 of integrated block IC1. The control pole of the bidirectional thyristor VS3 is connected with the resistor R9. Resistor R9 is connected to pin 4 of integrated block IC1. The resistor R1 is connected to the capacitor C1, the positive pole of the diode D1, the positive pole of the diode D2, and the negative pole of the Zener diode DZ1. The negative electrode of diode D1 is connected with the positive electrode of capacitor C3, the positive electrode of farad capacitor BT1, the capacitor C4, and the 16 pin of integrated block IC1. The cathode of the diode D2 is connected with the capacitor C2 and the resistor R2. Resistor R2 is connected with resistor R3 and pin 14 of integrated block IC1. The 7 pins of the integrated block are connected with the 15 pins of the integrated block. The resistor R4 is connected with the capacitor C5, the resistor R5, the capacitor C6, the resistor R6, the capacitor C7, the anode of the diode D3, and the cathode of the diode D4. The negative pole of the second machine tube D3 is connected with the negative pole of the diode D6, the positive pole of the capacitor C8, the capacitor C9 and the resettable fuse FU1. The resettable fuse FU1 is connected with the varistor RT1, the resistor R10 and the resistor R11. The resistor R10 is connected to the anode of the LED lamp L1. The negative pole of the LED lamp L1 is connected to the positive pole of the LED lamp L2. The negative pole of the LED lamp L2 is connected with the positive pole of the LED lamp L3. The negative pole of the LED lamp L3 is connected with the positive pole of the LED lamp L4. The resistor R11 is connected to the anode of the LED lamp L5. The negative pole of the LED lamp L5 is connected with the positive pole of the LED lamp L6. The negative pole of the LED lamp L6 is connected with the positive pole of the LED lamp L7. The negative pole of the LED lamp L7 is connected with the positive pole of the LED lamp L8. The anode of the diode D4 is connected with the anode of the diode D5, the cathode of the capacitor C8, the capacitor C9, the varistor RT1, the cathode of the LED lamp L4, and the cathode of the LED lamp L8.

The circuit is composed of mains power, power switch, working power supply, backup power supply, power failure detector, regulator and load. L and N are the live wire and neutral wire of the mains. SW1 is the power switch. Resistor R1, capacitor C1, Zener diode DZ1, diode D1, capacitor C3, and capacitor C4 form a RC step-down working power supply, which provides power for the regulator, power failure detector, and backup power supply. Resistor R5, capacitor C6, resistor R4, capacitor C5, resistor R6, and capacitor C7 form three groups of resistance-capacitance step-down circuits. The output voltages are high, medium, and low in turn. Diode D3, diode D4, diode D5, diode D6, and capacitor C8 1. Capacitor C9 is used for rectification and filtering of three groups of resistance-capacitance step-down output circuits, and is used as a working power supply for LED lighting lamps. The farad capacitor BT1 is the backup power supply. Counter integrated block IC1, model CD4017, thyristor VS1, thyristor VS2, thyristor VS3, resistor R7, resistor R8, resistor R9 form a regulator circuit, controlled by the power switch, select three groups of resistance-capacitance step-down power supply One of the sets provides power to the LED lights. Diode D2, capacitor C2, resistor R2, and resistor R3 form a power failure detector. Resettable fuse FU1, varistor RT1, resistor R10, LED lamp L1, LED lamp L2, LED lamp L3, LED lamp L4, resistor R11, LED lamp L5, LED lamp L6, LED lamp L7, LED lamp L8 form the load, The resettable fuse FU1 and varistor RT1 provide overcurrent and overvoltage protection for the LED lamp. When the power switch SW1 is disconnected, the 14-pin of integrated block IC1 is at low level, when the power switch SW1 is closed, the 14-pin of integrated block IC1 is at high level, and the brightness is adjusted once in a cycle of low and high levels, and the low and high levels of the cycle make Pin 3 of integrated block IC1, pin 2 of integrated block IC1, and pin 4 of integrated block IC1 sequentially output high level, and bidirectional thyristor VS1, bidirectional thyristor VS2, and bidirectional thyristor VS3 are sequentially cyclically conducted. The regulator controls the bidirectional thyristor to select one of the three groups of resistance-capacity step-down circuits for full-wave rectification and filtering to output to the LED lamp, thereby adjusting the brightness of the LED lighting lamp. The capacity of the farad capacitor BT1 in this circuit is selected to maintain the working time of the regulator for 5 seconds when the power switch is turned off. Of course, due to the difference in component parameters, there is an error in the time. When the power switch is disconnected within 5 seconds, each disconnection and closure is used as an adjustment output of the regulator to adjust the brightness of the LED lighting. When the power switch is turned off for more than 5 seconds, the regulator will reset. At this time, the power switch is closed, and the regulator controls the thyristor VS2 to conduct, and the LED lighting lamp outputs the highest brightness.

The number of groups of regulator resistance-capacity step-down circuits can be increased or decreased according to the needs. The integrated block CD4017 can be replaced by a single-chip microcomputer, or a single-chip microcomputer with EEPROM memory or FLASH memory can be used to save user operating parameters. When the power switch is disconnected for too long The voltage of the farad capacitor BT1 is lower than the operating voltage of the integrated block IC1. At this time, when the user closes the power switch, the LED light is still at the brightness adjusted last time. When the power switch is turned off, the time to keep the regulator working and not reset needs to be adjusted, which can be solved by adjusting the capacity of the farad capacitor. The farad capacitor BT1 can also choose a rechargeable battery. The varistor RT1 can also be replaced by a detonator.

A plurality of LED lighting lamps using this embodiment are connected in parallel, and a main power switch is used. In each embodiment, the power switch is normally closed or directly connected, and the parameters of multiple electrical appliances are adjusted at the same time by quickly and repeatedly opening and closing the main power switch.

Specific implementation mode two:

As shown in Figure 3, L and N are the live and neutral wires of the commercial power, the L terminal of the commercial power is connected to the power switch SW1, the other end of the power switch SW1 is connected to the input terminal of the switching power supply DY1, and the N terminal of the commercial power is connected to the input terminal of the switching power supply DY1 The switching power supply DY1 outputs two working voltages with three output terminals, the positive voltage VDD and VDD2, and the power ground GND. VDD is connected to the anode of resistor R1 and diode D1. Resistor R1 is connected with resistor R2 and pin 2 of microcontroller IC1. The negative pole of diode D1 is connected with capacitor C1, the positive pole of capacitor C2, the positive pole of farad capacitor BT1, and the pin 6 of single-chip microcomputer IC1. VDD2 is connected with resistor R4 and resistor R5. The power ground GND is connected with resistor R2, pin 5 of microcontroller IC1, capacitor C1, capacitor C2 negative pole, farad capacitor BT1 negative pole, and NPN triode emitter. The resistor R4 is connected to the anode of the LED lamp L1. The negative pole of the LED lamp L1 is connected to the positive pole of the LED lamp L2. The negative pole of the LED lamp L2 is connected with the positive pole of the LED lamp 3 . The negative pole of the LED lamp L3 is connected with the positive pole of the LED lamp L4. The negative pole of the LED lamp L4 is connected with the negative pole of the LED lamp L8 and the collector of the NPN transistor Q1. The resistor R5 is connected to the anode of the LED lamp L5. The negative pole of the LED lamp L5 is connected with the positive pole of the LED lamp L6. The negative pole of the LED lamp L6 is connected with the positive pole of the LED lamp L7. The negative pole of the LED lamp L7 is connected with the positive pole of the LED lamp L8. Pin 9 of the microcontroller IC1 is connected to the resistor R3, and the resistor R3 is connected to the base of the NPN transistor Q1.

The circuit is composed of mains power, power switch, working power supply, backup power supply, power failure detector, regulator and load. L and N are city electricity. SW1 is the power switch. Switching power supply DY1, diode D1, capacitor C1, and capacitor C2 form a working power supply. The farad capacitor BT1 is the backup power supply. Single-chip IC1 model HT68F006, resistor R3, and NPN transistor Q1 form a regulator circuit. Resistor R1 and resistor R2 form a power failure detector. Resistor R4, resistor R5, LED lamp L1, LED lamp L2, LED lamp L3, LED lamp L4, LED lamp L5, LED lamp L6, LED lamp L7, LED lamp L8 form a load. The working voltage of the single-chip microcomputer IC1 is provided by the switching power supply DY1. When the power switch SW1 is disconnected, the pin 2 of the single-chip microcomputer IC1 is at a low level. When the power switch SW1 is closed, the pin 2 of the single-chip microcomputer IC1 is at a high level. Periodically adjust the pulse width once, output the pulse width adjustment signal from pin 9, and adjust the brightness of the LED lighting through the resistor R3 and the transistor Q1. The capacity of the farad capacitor BT1 is selected to maintain the working time of the microcontroller IC1 for 5 seconds when the power switch is turned off. Of course, there is an error in the time due to the difference in the parameters of the components. When the power switch is disconnected within 5 seconds, each disconnection and closure is used as an adjustment signal, and the regulator adjusts the brightness of the LED lighting once. When the power switch is disconnected for more than 5 seconds, the regulator is reset, and the power switch is closed at this time, and the LED lighting lamp outputs the highest brightness. In this embodiment, the brightness of the LED lighting lamp is divided into 5 levels, and the number of levels of brightness adjustment can also be changed by adjusting the program of the single-chip microcomputer IC1 as required.

When the power switch is turned off, the time to keep the regulator working and not reset needs to be adjusted, which can be solved by adjusting the capacity of the farad capacitor. The farad capacitor BT1 can also choose a rechargeable battery. The single-chip microcomputer IC1 has an EEPROM memory, which can also be used to save the brightness adjustment parameters of the user. When the power switch is turned off for too long and the farad capacitor power supply cannot maintain the regulator’s work, the brightness adjusted last time is still the same when the user closes the power switch. The single-chip microcomputer IC1 can also use a single-chip microcomputer with an analog-to-digital conversion function, and use an analog-to-digital converter to accurately detect the low and high levels generated by the power-off detector, so as to improve the response speed of the single-chip microcomputer to the power switch when it is disconnected, and reduce the power switch. The power consumption of the farad capacitor by the regulator when it is on.

A plurality of LED lighting lamps using this embodiment are connected in parallel, and a main power switch is used. In each embodiment, the power switch is normally closed or directly connected, and the parameters of multiple electrical appliances are adjusted at the same time by quickly and repeatedly opening and closing the main power switch.

Specific implementation mode three:

As shown in FIG. 4 , the mains L and N are live wires and neutral wires of the mains, and the L end of the mains is connected to the power switch SW1. The power switch SW1 is connected with the resistor R1, the capacitor C1, the resistor R14, the T1 pole of the triac VS1, the resistor R9, the resistor R10, the resistor R11, the resistor R12, and the resistor R13. Mains N terminal and common terminal of pin 1 of ceiling fan motor M1, positive pole of Zener diode DZ1, capacitor C2, resistor R3, negative pole of capacitor C3, negative pole of farad capacitor BT1, capacitor C4, pin 8 of integrated block IC1, pin 13 of integrated block IC1 Pin, pin 2 of optocoupler U1, pin 2 of optocoupler U2, pin 2 of optocoupler U3, pin 2 of optocoupler U4, pin 2 of optocoupler U5. The resistor R1 is connected with the capacitor C1, the negative pole of the Zener diode DZ1, the positive pole of the diode D1, and the positive pole of the diode D2. The cathode of the diode D2 is connected with the capacitor C2 and the resistor R2. Resistor R2 is connected with R3 and pin 14 of integrated block IC1. The negative electrode of diode D1 is connected with the positive electrode of capacitor C3, the positive electrode of farad capacitor BT1, the capacitor C4, and the 16 pin of integrated block IC1. The 2-pin main winding end of the ceiling fan motor M1 is connected to the capacitor C5, capacitor C6, capacitor C7, and the T2 pole of the bidirectional thyristor VS1. Capacitor C7 is connected to resistor R14. The capacitor C6 is connected with the triac VS1 control pole, pin 6 of the optocoupler U1, pin 6 of the optocoupler U2, pin 6 of the optocoupler U3, pin 6 of the optocoupler U4, and pin 6 of the optocoupler U5. Pin 4 of optocoupler U1 is connected with resistor R9. Pin 4 of optocoupler U2 is connected with resistor R10. Pin 4 of optocoupler U3 is connected with resistor R11. Pin 4 of optocoupler U4 is connected with resistor R12. Pin 4 of optocoupler U5 is connected with resistor R13. Pin 1 of integrated block IC1 is connected with pin 15 of integrated block IC1. Pin 2 of integrated block IC1 is connected with resistor R4. Pin 3 of integrated block IC1 is connected with resistor R5. Pin 4 of integrated block IC1 is connected with resistor R6. Pin 7 of integrated block IC1 is connected with resistor R7. Pin 10 of integrated block IC1 is connected with resistor R8. Resistor R4 is connected to pin 1 of optocoupler U1. Resistor R5 is connected to pin 1 of optocoupler U2. Resistor R6 is connected to pin 1 of optocoupler U3. Resistor R7 is connected to pin 1 of optocoupler U4. Resistor R8 is connected to pin 1 of optocoupler U5. The models of optocouplers U1, U2, U3, U4, and U5 are MOC3021. The model of integrated IC1 is CD4017.

The circuit is composed of mains power, power switch, working power supply, backup power supply, power failure detector, regulator and load. L is the live line of the mains, and N is the neutral line of the mains. SW1 is the power switch. Resistor R1, capacitor C1, Zener diode DZ1, diode D1, capacitor C3, and capacitor C4 form the working power supply of integrated block IC1 in the regulator circuit. The working power of the ceiling fan motor M1 is provided by the commercial power after being adjusted by the silicon controlled rectifier. BT1 is the backup power supply. Diode D2, capacitor C2, resistor R2, and resistor R3 form a power failure detector. Manifold IC1, resistor R4, resistor R5, resistor R6, resistor R7, resistor R8, capacitor C6, capacitor C7, resistor R14, triac VS1, optocoupler U1, optocoupler U2, optocoupler U3, optocoupler U4, Optocoupler U5, resistor R9, resistor R10, resistor R11, resistor R12, and resistor R13 form a regulator circuit. Ceiling fan motor M1 and capacitor C5 form a load circuit. The working voltage of the integrated block IC1 is provided by the working power supply composed of the resistance-capacitance step-down circuit. When the power switch SW1 is disconnected, the 14-pin of the integrated block IC1 is at a low level, and when the power switch SW1 is closed, the 14-pin of the integrated block IC1 is at a high level and low. , one cycle of high level is used as a parameter adjustment signal of the integrated block IC1, the low and high levels of the cycle make the 3 pins of the integrated block IC1, the 2 pins of the integrated block IC1, the 4 pins of the integrated block IC1, and the 7 pins of the integrated block IC1 Pin, 10 pins of integrated block IC1 sequentially output high level, the corresponding optocoupler is turned on, resistor R10, resistor R9, resistor R11, resistor R12, resistor R13, the resistance values of these 5 resistors are in order from small to large, corresponding When the optocoupler is turned on, the triac VS1 control electrode current is different, and there are 5 levels of ceiling fan motor speed. The capacity of the farad capacitor BT1 in this circuit is selected to maintain the working time of the integrated block IC1 for 10 seconds when the power switch is turned off. Of course, due to the difference in component parameters, there is an error in the time. When the power switch is turned off within 10 seconds, turn it off and on once as an adjustment signal of integrated block IC1 to adjust the speed of the ceiling fan motor. When the power switch is disconnected for more than 10 seconds, the counting controller will be reset. At this time, the power switch is closed, and the maximum power output of the ceiling fan is achieved.

When the power switch is turned off, the time to keep the regulator working and not reset needs to be adjusted, which can be solved by adjusting the capacity of the farad capacitor. The farad capacitor BT1 can also choose a rechargeable battery. The gear of the regulator to adjust the wind speed can be increased or decreased as required, and the integrated block IC1 can be replaced by a single-chip microcomputer. The load in this embodiment can be a light bulb, an electric heating tube, and the like.

In this embodiment, multiple parallel connections are used, and one main power switch is used. In each embodiment, the power switch is normally closed or directly connected, and the parameters of multiple electrical appliances are adjusted at the same time by quickly and repeatedly opening and closing the main power switch.

Specific implementation mode four:

As shown in FIG. 5 , the terminal L of the commercial power is connected to the power switch SW1 . The power switch SW1 is connected with the switching power supply DY1, the load power supply DY2, and the resistor R1, and the mains N terminal is connected with the switching power supply DY1, the load power supply DY2, the anode of the diode D1, and the pin 2 of the optocoupler U1. Pin 1 of optocoupler U1 is connected to resistor R1. Pin 4 of optocoupler U1 is connected with resistor R3. Pin 3 of optocoupler U1 is connected with resistor R2, capacitor C1, and pin 2 of microcontroller IC1. The switching power supply DY1 outputs a positive voltage VDD and a power ground GND. VDD is connected to the resistor R3 and the anode of the diode D2. The cathode of the diode D2 is connected with the anode of the farad capacitor BT1, the anode of the capacitor C3, the capacitor C2, and the pin 6 of the integrated block IC1. Pin 1 of microcontroller IC1 is connected to load 1. Pin 10 of the microcontroller IC1 is connected to the load 2. Pin 9 of the microcontroller IC1 is connected to the load 3 . Pin 8 of the microcontroller IC1 is connected to the load 4 . Pin 7 of the microcontroller IC1 is connected to the load 5 . Pin 4 of the microcontroller IC1 is connected to the load 6 . Pin 3 of the microcontroller IC1 is connected to the load 7 . The ground GND of the switching power supply is connected to pin 5 of the microcontroller IC1, the negative poles of the capacitor C2 and the capacitor C3, and the negative pole of the farad capacitor BT1. Optocoupler U1 model PC817, microcontroller IC1 model HT68F006.

The circuit is composed of mains power, power switch, working power supply, power failure detector, backup power supply, regulator and load. L and N are the live wire and neutral wire of the mains. SW1 is the power switch. The load power supply DY2 provides power for the loads 1 to 7, and the switching power supply DY1 and the load power supply DY2 form a working power supply to provide the power required by each circuit. Resistor R1, diode D1, optocoupler U1, resistor R3, resistor R2, and capacitor C1 form a power failure detector. The farad capacitor BT1 is the backup power supply. Single-chip IC1 is a regulator. Load 1 to load 7 form a load circuit. The working voltage of single-chip microcomputer IC1 is provided by switching power supply DY1. When the power switch SW1 is disconnected, pin 2 of single-chip microcomputer IC1 is at low level. Each time the single-chip microcomputer IC1 receives an adjustment signal, it controls the output of pins 1, 3, 4, 7, 8, 9, and 10 of the single-chip microcomputer IC1 to adjust once, which can control the load on and off. Controllable load parameter adjustment. The capacity of the farad capacitor BT1 is selected to maintain the working time of the microcontroller IC1 for 10 seconds when the power switch is turned off. Of course, there is an error in the time due to the difference in the parameters of the components. When the power switch is turned off within 10 seconds, the microcontroller IC1 takes the power switch SW1 off and on once as an adjustment signal to adjust the load output.

When the power switch is turned off, the time to keep the regulator working and not reset needs to be adjusted, which can be solved by adjusting the capacity of the farad capacitor. The farad capacitor BT1 can also choose a rechargeable battery. The single-chip microcomputer IC1 can also adopt different load adjustment methods according to the power switch off time, such as turning on or off a certain load, adjusting a certain load parameter, and so on. The single chip IC1 can also use other models to increase or decrease the number of loads.

Multiple electrical appliances using this embodiment are connected in parallel, and a main power switch is used. In each embodiment, the power switch is normally closed or directly connected, and the parameters of multiple electrical appliances are adjusted at the same time by quickly and repeatedly disconnecting and closing the main power switch.

Claims (4)

1. A circuit that uses a power switch to adjust the parameters of an electrical appliance, including: mains power; a power switch, used to turn on or off the mains power supply of the electrical appliance; a working power supply, used to provide the power required for the operation of each circuit of the electrical appliance; load, used by the electrical appliance It is the part that needs to adjust the working parameters; its feature is that it also includes: backup power supply, which charges when the power switch is closed, and provides power for the regulator when the power switch is disconnected; power failure detector, which generates the power switch disconnection and closure signal for adjustment The regulator; the regulator monitors the signal provided by the power failure detector, and adjusts the operating parameters of the electrical appliance after processing. 2. The circuit according to claim 1 using a power switch to adjust electrical parameters, characterized in that: use a thyristor (VS1 in Fig. 2, VS2, VS3) to select a resistance-capacitance step-down circuit (R4 and C5 in Fig. 2, R5 and C6, R6 and C7). 3. according to claim 1, the circuit using a power switch to adjust electrical parameters is characterized in that: use an optocoupler (U1, U2, U3, U4, U5 in Figure 4) to select the resistance value of the output terminal series resistor (in Figure 4 R9, R10, R11, R12, R13) adjust the gate current of the bidirectional thyristor (VS1 in Figure 4). 4. The circuit for adjusting parameters of electric appliances by using a power switch according to claim 1, wherein a plurality of parallel electric appliances use one general power switch to adjust parameters.