CN220457619U

CN220457619U - Wall lamp driving circuit

Info

Publication number: CN220457619U
Application number: CN202322160244.3U
Authority: CN
Inventors: 文相弼
Original assignee: Dongguan Liguo Lighting Co ltd
Current assignee: Dongguan Liguo Lighting Co ltd
Priority date: 2023-08-11
Filing date: 2023-08-11
Publication date: 2024-02-06
Anticipated expiration: 2033-08-11

Abstract

The utility model relates to a wall lamp driving circuit, comprising: the input terminal is connected with the mains supply; the rectification filter circuit is electrically connected with the input terminal; the step-down circuit is electrically connected with the rectifying and filtering circuit; the mode switching circuit is electrically connected with the rectifying and filtering circuit; the night lamp connecting circuit is electrically connected with the mode switching circuit; and the main lamp constant current dimming driving circuit is electrically connected with the mode switching circuit.

Description

Wall lamp driving circuit

Technical Field

The utility model relates to the technical field of lighting driving, in particular to a wall lamp driving circuit.

Background

For ordinary household wall lamps, LED (Light Emitting Diode) lamps are used, and the main purpose of the lamp is illumination. However, the light of the LED lamp is often too glaring, and when people sleep, the LED lamp is turned off to avoid affecting sleep, and when people get up in the middle of the night, the LED lamp turned off cannot provide illumination in time, which is very inconvenient. Therefore, the concept of night lamps is also gradually introduced in real life. At present, most night lamps in the market are directly plugged into sockets when in use, so that the resources of the sockets are wasted, and the attractiveness of a living room is also influenced. In addition, most of the existing LED lamps are common lamps which cannot be dimmed, have single functions, cannot realize multifunctional switching, and cannot meet the requirements of people on the dimming function of the lamps. For example, the existing LED lamp needs to be turned on and off for multiple times to realize the conversion between illumination and night light, so that a customer can use the LED lamp in error and cannot switch to a desired working mode. For another example, the existing dimming power supply of the wall lamp has poor compatibility, when the dimmer with poor compatibility is used for dimming the LED lamp, chopped alternating current signals are disordered, and due to imperfect detection circuits, detected signals are disordered, so that lamplight flickering is finally caused.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a wall lamp driving circuit, which aims to solve the problems of compatibility of illumination, night lamps and dimming and poor dimming effect.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a wall lamp driving circuit comprising:

the input terminal is connected with the mains supply;

the rectification filter circuit is electrically connected with the input terminal;

the step-down circuit is electrically connected with the rectifying and filtering circuit,

the mode switching circuit is electrically connected with the rectifying and filtering circuit;

the night lamp connecting circuit is electrically connected with the mode switching circuit;

and the main lamp constant current dimming driving circuit is electrically connected with the mode switching circuit.

As a preferable scheme, the rectifying and filtering circuit comprises a fuse F1, a magnetic ring LM1, a piezoresistor MOV1, an electrolytic capacitor CE2, a patch diode D4 and a thin film capacitor C3; one end of the fuse is electrically connected with the live wire input end of the input terminal, and the other end of the fuse is electrically connected with the pin 1 of the magnetic ring LM 1; a pin 3 of the magnetic ring LM1 is electrically connected with a zero line input end of the input terminal, a pin 2 of the magnetic ring LM1 is electrically connected with one end of the piezoresistor MOV1, and a pin 4 of the magnetic ring LM1 is electrically connected with the other end of the piezoresistor MOV 1; the positive electrode end of the electrolytic capacitor CE2 is electrically connected with the pin 2 of the magnetic ring LM1, and the negative electrode end of the electrolytic capacitor CE2 is grounded; the positive electrode end of the electrolytic capacitor CE1 is electrically connected with the negative electrode end of the patch diode D4, the positive electrode end of the patch diode D4 is electrically connected with the pin 4 of the magnetic ring LM1, and the negative electrode end of the CE1 is grounded; one end of the thin film capacitor C3 is grounded, and the other end of the thin film capacitor C3 is electrically connected with the pin 4 of the magnetic ring LM 1.

As a preferable scheme, the mode switching circuit comprises a control chip U1 with the model number of HC18P110S-8P, an optical coupler U4 with the model number of EL357, a chip resistor R1, a chip resistor R20, a chip resistor R4 and a bidirectional thyristor BT1; the pin 1 of the control chip U4 is electrically connected with one end of the chip resistor R20, the other end of the chip resistor R20 is electrically connected with the pin 4 of the magnetic ring LM1, the pin 2 of the control chip U4 is grounded, the pin 3 of the control chip U4 is electrically connected with one end of the chip resistor R1, the other end of the chip resistor R1 is grounded, and the pin 4 of the chip resistor R1 is electrically connected with the pin 2 of the magnetic ring LM 1; the pin 1 of the control chip U1 is electrically connected with the pin 2 of the magnetic ring LM1, the pin 3 of the control chip U1 is electrically connected with the pin 3 of the control chip U4, the pin 8 of the control chip U1 is grounded, the pin 6 of the control chip U1 is electrically connected with the switch, the pin 7 of the control chip U1 is electrically connected with one end of the chip resistor R4, the other end of the chip resistor R4 is electrically connected with the G1 pin end of the bidirectional thyristor BT1, and the MT1 pin end of the bidirectional thyristor BT1 is electrically connected with the pin 2 of the magnetic ring LM 1.

As a preferable scheme, the night lamp connecting circuit comprises a bidirectional silicon controlled rectifier BT2, a chip resistor R9 and a night lamp connecting terminal CN2 of 2 PIN; the MT1 pin end of the bidirectional thyristor BT2 is electrically connected with the pin 2 of the magnetic ring LM1, one end of the chip resistor R9 is electrically connected with the G1 pin end of the bidirectional thyristor BT2, the other end of the chip resistor R9 is electrically connected with the pin 6 of the control chip U1, the MT 2pin end of the bidirectional thyristor BT2 is electrically connected with the pin 2 of the night lamp connecting terminal CN2, the pin 2 of the night lamp connecting terminal CN2 is electrically connected with a live wire output end, and the pin 1 of the night lamp connecting terminal CN2 is electrically connected with a zero line output end.

As a preferable scheme, the main lamp constant current dimming driving circuit comprises a control chip U3 with the model of BP5178, a control chip U5 with the model of BP5178, a rectifier bridge BD1, a chip resistor R10, a chip varistor MOV2, a chip diode D1, a chip resistor R5, a chip capacitor C6, a chip resistor R11, a chip resistor R12, a chip resistor R7, a chip resistor R13, a chip resistor R16, a chip capacitor C7, a chip resistor R18, a chip resistor R19, a chip resistor R14, a chip resistor R21, a chip resistor R15, an electrolytic capacitor CE3, and a main lamp wiring terminal CN1 with 2 PIN; the first alternating current input end of the rectifier bridge BD1 is electrically connected with one end of the chip resistor R10, the other end of the chip resistor R10 is electrically connected with the MT2 end of the bidirectional thyristor BT2, and the second alternating current input end of the rectifier bridge BD1 is electrically connected with the pin 4 of the magnetic ring LM 1; the positive terminal of the patch diode D1 is electrically connected with the positive terminal of the rectifier bridge BD 1; the negative end of the patch diode D1 is electrically connected with the pin 1 of the main lamp wiring terminal CN1; one end of the chip resistor R11 is electrically connected with the positive electrode end of the rectifier bridge BD1, and the other end of the chip resistor R11 is electrically connected with the pin 8 of the control chip U3; one end of the chip resistor R5 is electrically connected with the positive electrode end of the rectifier bridge BD1, and the other end of the chip resistor R11 is electrically connected with the pin 1 of the control chip U3; one end of the chip capacitor C6 is electrically connected with the negative end of the rectifier bridge BD1, and the other end of the chip resistor R11 is electrically connected with the pin 1 of the control chip U3; one end of the chip resistor R12 is electrically connected with the pin 3 of the control chip U3, and the other end of the chip resistor R12 is electrically connected with the pin 4 of the control chip U3; one end of the chip resistor R7 is electrically connected with the pin 4 of the control chip U3, and the other end of the chip resistor R7 is electrically connected with the negative end of the rectifier bridge BD 1; one end of the chip resistor R13 is electrically connected with the pin 5 of the control chip U3, and the other end of the chip resistor R13 is electrically connected with the pin 7 of the control chip U3; the pin 2 of the control chip U3 is electrically connected with the pin 1 of the main lamp wiring terminal CN1, the pin 7 of the control chip U3 is electrically connected with the pin 2 of the main lamp wiring terminal CN1, and the pin 6 and the pin 9 of the control chip U3 are electrically connected with the pin 6 of the control chip U5; one end of the chip resistor R16 is electrically connected with the positive output end of the rectifier bridge BD1, and the other end of the chip resistor R16 is electrically connected with the pin 1 of the control chip U5; one end of the chip resistor R14 is electrically connected with the positive output end of the rectifier bridge BD1, and the other end of the chip resistor R14 is electrically connected with the pin 8 of the control chip U5; one end of the chip resistor R19 is electrically connected with the pin 3 of the control chip U5, and the other end of the chip resistor R19 is electrically connected with the pin 4 of the control chip U5; one end of the patch capacitor C7 is electrically connected with the pin 1 of the control chip U5, and the other end of the patch capacitor C7 is electrically connected with the pin 6 of the control chip U5; one end of the chip resistor R18 is electrically connected with the pin 4 of the control chip U5, and the other end of the chip resistor R18 is electrically connected with the pin 6 of the control chip U5; one end of the chip resistor R21 is electrically connected with the pin 5 of the control chip U5, and the other end of the chip resistor R21 is electrically connected with the pin 7 of the control chip U5; the pin 6 of the control chip U5 is electrically connected with the pin 9 of the control chip U9; one end of the chip resistor R15 is electrically connected with the pin 1 of the main lamp wiring terminal CN1, and the other end of the chip resistor R15 is electrically connected with the pin 2 of the main lamp wiring terminal CN1; the positive electrode end of the electrolytic capacitor CE3 is electrically connected with the pin 1 of the main lamp connecting terminal CN1, and the negative electrode end of the electrolytic capacitor CE3 is electrically connected with the pin 2 of the main lamp connecting terminal CN 1.

As a preferable scheme, the step-down circuit includes a control chip U2 with a model BP2525D, a chip resistor R22, a transformer L1, a thin film capacitor CY1, an electrolytic capacitor CE4, a chip resistor R8, a transformer L2, an electrolytic capacitor C2, a chip diode D5, a chip diode ZD1, a chip resistor R2, a thin film capacitor C1, a thin film capacitor C4, a chip resistor R6, and a chip diode D6; the chip resistor R22 and one end of the transformer L1 are electrically connected to the negative electrode end of the chip diode D4 together, and the chip resistor R22 and the other end of the transformer L1 are connected to the pin 4 of the control chip U2 together; the positive electrode of the electrolytic capacitor CE4 is electrically connected with the pin 4 of the control chip U2, and the negative electrode of the electrolytic capacitor CE4 is grounded; one end of the thin film capacitor CY1 is electrically connected with the pin 4 of the control chip U2, and the other end of the thin film capacitor CY1 is electrically connected with the positive electrode end of the electrolytic capacitor CE 2; one end of the chip resistor R8 is electrically connected with the pin 5 of the control chip U2, and the other end of the chip resistor R8 is electrically connected with the pin 1 and the pin 2 of the control chip U2; the pin 1 of the control chip U2 is electrically connected with one end of the transformer L2, and the other end of the transformer L2 is electrically connected with the positive electrode end of the electrolytic capacitor CE 2; the positive electrode terminal of the electrolytic capacitor C2 is electrically connected with the pin 3 of the control chip U2, and the negative electrode terminal of the electrolytic capacitor C2 is electrically connected with the pin 2 of the control chip U2; the negative electrode end of the patch diode D2 is electrically connected with the pin 3 of the control chip U2, the positive electrode end of the patch diode D2 is electrically connected with the negative electrode end of the patch diode D5, and the positive electrode end of the patch diode D5 is electrically connected with the positive electrode end of the electrolytic capacitor CE 2; the negative electrode end of the patch diode D6 is electrically connected with the pin 1 of the control chip U2, and the positive electrode of the patch diode D6 is grounded; one end of the thin film capacitor C4 is electrically connected with the pin 1 of the control chip U2, the other end of the thin film capacitor C4 is electrically connected with one end of the chip resistor R6, and the other end of the chip resistor R6 is grounded; the negative electrode end of the patch diode ZD1 is electrically connected with the positive electrode end of the electrolytic capacitor CE2, one end of the patch resistor R2 and one end of the thin film capacitor C1 are connected in parallel with the positive electrode end of the electrolytic capacitor CE2, and the other end of the patch resistor R2 and the other end of the thin film capacitor C1 are connected in parallel and grounded.

The wall lamp driving circuit has the beneficial effects that:

through combining input terminal, rectification filter circuit, step-down circuit, mode switching circuit, night-light connecting circuit, main light constant current drive circuit that adjusts luminance, realize the perfect integration of night-light function and function of adjusting luminance, constitute a direct mount can not only be as ordinary illumination on lamps and lanterns, can also be used as the wall lamp of night-light, both avoided extravagant socket resource, also can make the living room more pleasing to the eye. The mode switching circuit is in an illumination mode after judging that the power supply is cut off for 10 seconds, and is in a night lamp mode after judging that the switch is turned off/on, so that the function conversion between common illumination and a small night lamp can be effectively realized, the light can be kept during sleeping, and a person cannot touch black when getting up; meanwhile, the main lamp constant-current dimming driving circuit well solves the problem that when the night lamp mode is switched into the illumination mode, the work abnormality causes a flashing lamp; in addition, the mode switching circuit and the main lamp constant current dimming driving circuit are matched to realize the dimming function well, so that a wall lamp driving circuit integrating three functions of common illumination, night lamps and dimming is formed, and people can adjust the brightness of the LED lamp according to own preference, so that the demand of the market on the dimming LED lamp is just met, and the trouble of purchasing two lamps of the night lamps and the dimming lamps is avoided; correspondingly, the diversified LED lamp has the characteristics of simple operation and control, low cost and the like, and is extremely beneficial to the design, production and popularization of the dimmable LED lamp.

Drawings

Fig. 1 is a schematic diagram of a partial circuit structure of a wall lamp driving circuit according to an embodiment of the present utility model.

Fig. 2 is a schematic circuit diagram of a step-down circuit according to an embodiment of the present utility model.

Fig. 3 is a schematic circuit diagram of a main lamp constant current dimming driving circuit according to an embodiment of the present utility model.

Description of the embodiments

The utility model will be further described with reference to the drawings and the specific embodiments.

As shown in fig. 1 to 3, the present utility model provides a wall lamp driving circuit, comprising:

the input terminal is connected with the mains supply;

As shown in fig. 1, the rectifying and filtering circuit comprises a fuse F1, a magnetic ring LM1, a piezoresistor MOV1, an electrolytic capacitor CE2, a patch diode D4, and a thin film capacitor C3; one end of the fuse is electrically connected with the live wire input end of the input terminal, and the other end of the fuse is electrically connected with the pin 1 of the magnetic ring LM 1; pin 3 of magnetic ring LM1 is electrically connected with zero line input end of input terminal, pin 2 of magnetic ring LM1 is electrically connected with one end of piezoresistor MOV1, and pin 4 of magnetic ring LM1 is electrically connected with the other end of piezoresistor MOV 1; the positive electrode end of the electrolytic capacitor CE2 is electrically connected with the pin 2 of the magnetic ring LM1, and the negative electrode end of the electrolytic capacitor CE2 is grounded; the positive electrode end of the electrolytic capacitor CE1 is electrically connected with the negative electrode end of the patch diode D4, the positive electrode end of the patch diode D4 is electrically connected with the pin 4 of the magnetic ring LM1, and the negative electrode end of the CE1 is grounded; one end of the thin film capacitor C3 is grounded, and the other end of the thin film capacitor C3 is electrically connected with the pin 4 of the magnetic ring LM 1.

As shown in fig. 1, the mode switching circuit includes a control chip U1 with model HC18P110S-8P, an optocoupler U4 with model EL357, a chip resistor R1, a chip resistor R20, a chip resistor R4, and a triac BT1; the pin 1 of the control chip U4 is electrically connected with one end of the chip resistor R20, the other end of the chip resistor R20 is electrically connected with the pin 4 of the magnetic ring LM1, the pin 2 of the control chip U4 is grounded, the pin 3 of the control chip U4 is electrically connected with one end of the chip resistor R1, the other end of the chip resistor R1 is grounded, and the pin 4 of the chip resistor R1 is electrically connected with the pin 2 of the magnetic ring LM 1; the pin 1 of the control chip U1 is electrically connected with the pin 2 of the magnetic ring LM1, the pin 3 of the control chip U1 is electrically connected with the pin 3 of the control chip U4, the pin 8 of the control chip U1 is grounded, the pin 6 of the control chip U1 is electrically connected with the switch, the pin 7 of the control chip U1 is electrically connected with one end of the chip resistor R4, the other end of the chip resistor R4 is electrically connected with the G1 pin end of the bidirectional thyristor BT1, and the MT1 pin end of the bidirectional thyristor BT1 is electrically connected with the pin 2 of the magnetic ring LM 1.

The pin 7 of the control chip U1 is electrically connected with the G1 pin end of the bidirectional triode thyristor BT1 through the chip resistor R4, so that the flow guiding direction of the bidirectional triode thyristor BT1 can be controlled, and the power supply to the main lamp constant current dimming driving circuit is controlled, so that the on and off of the LED lamp is controlled.

As shown in fig. 1, the night light connection circuit includes a bidirectional thyristor BT2, a chip resistor R9, and a night light connection terminal CN2 of 2 PIN; the MT1 pin end of the bidirectional triode thyristor BT2 is electrically connected with the pin 2 of the magnetic ring LM1, one end of the patch resistor R9 is electrically connected with the G1 pin end of the bidirectional triode thyristor BT2, the other end of the patch resistor R9 is electrically connected with the pin 6 of the control chip U1, the MT 2pin end of the bidirectional triode thyristor BT2 is electrically connected with the pin 2 of the night lamp wiring terminal CN2, the pin 2 of the night lamp wiring terminal CN2 is electrically connected with a live wire output end, and the pin 1 of the night lamp wiring terminal CN2 is electrically connected with a zero wire output end.

The pin 6 of the control chip U1 is connected with the switch, and meanwhile, the chip resistor R9 is electrically connected with the G1 pin end of the bidirectional thyristor BT2, so that the flow guiding direction of the bidirectional thyristor BT2 can be controlled, the power supply to the night lamp can be controlled, and the on-off of the night lamp can be controlled.

As shown in fig. 3, the main lamp constant current dimming driving circuit includes a control chip U3 with the model of BP5178, a control chip U5 with the model of BP5178, a rectifier bridge BD1, a chip resistor R10, a chip varistor MOV2, a chip diode D1, a chip resistor R5, a chip capacitor C6, a chip resistor R11, a chip resistor R12, a chip resistor R7, a chip resistor R13, a chip resistor R16, a chip capacitor C7, a chip resistor R18, a chip resistor R19, a chip resistor R14, a chip resistor R21, a chip resistor R15, an electrolytic capacitor CE3, and a main lamp connection terminal CN1 with 2 PIN; the first alternating current input end of the rectifier bridge BD1 is electrically connected with one end of the chip resistor R10, the other end of the chip resistor R10 is electrically connected with the MT2 end of the bidirectional thyristor BT2, and the second alternating current input end of the rectifier bridge BD1 is electrically connected with the pin 4 of the magnetic ring LM 1; the positive terminal of the patch diode D1 is electrically connected with the positive terminal of the rectifier bridge BD 1; the negative end of the patch diode D1 is electrically connected with a pin 1 of the main lamp connecting terminal CN1; one end of the chip resistor R11 is electrically connected with the positive electrode end of the rectifier bridge BD1, and the other end of the chip resistor R11 is electrically connected with the pin 8 of the control chip U3; one end of the chip resistor R5 is electrically connected with the positive electrode end of the rectifier bridge BD1, and the other end of the chip resistor R11 is electrically connected with the pin 1 of the control chip U3; one end of a chip capacitor C6 is electrically connected with the negative electrode end of the rectifier bridge BD1, and the other end of a chip resistor R11 is electrically connected with the pin 1 of the control chip U3; one end of the chip resistor R12 is electrically connected with the pin 3 of the control chip U3, and the other end of the chip resistor R12 is electrically connected with the pin 4 of the control chip U3; one end of the chip resistor R7 is electrically connected with the pin 4 of the control chip U3, and the other end of the chip resistor R7 is electrically connected with the negative electrode end of the rectifier bridge BD 1; one end of the chip resistor R13 is electrically connected with the pin 5 of the control chip U3, and the other end of the chip resistor R13 is electrically connected with the pin 7 of the control chip U3; the pin 2 of the control chip U3 is electrically connected with the pin 1 of the main lamp wiring terminal CN1, the pin 7 of the control chip U3 is electrically connected with the pin 2 of the main lamp wiring terminal CN1, and the pin 6 and the pin 9 of the control chip U3 are electrically connected with the pin 6 of the control chip U5; one end of the chip resistor R16 is electrically connected with the positive electrode output end of the rectifier bridge BD1, and the other end of the chip resistor R16 is electrically connected with the pin 1 of the control chip U5; one end of the chip resistor R14 is electrically connected with the positive electrode output end of the rectifier bridge BD1, and the other end of the chip resistor R14 is electrically connected with the pin 8 of the control chip U5; one end of the chip resistor R19 is electrically connected with the pin 3 of the control chip U5, and the other end of the chip resistor R19 is electrically connected with the pin 4 of the control chip U5; one end of the patch capacitor C7 is electrically connected with the pin 1 of the control chip U5, and the other end of the patch capacitor C7 is electrically connected with the pin 6 of the control chip U5; one end of the chip resistor R18 is electrically connected with the pin 4 of the control chip U5, and the other end of the chip resistor R18 is electrically connected with the pin 6 of the control chip U5; one end of the chip resistor R21 is electrically connected with the pin 5 of the control chip U5, and the other end of the chip resistor R21 is electrically connected with the pin 7 of the control chip U5; the pin 6 of the control chip U5 is electrically connected with the pin 9 of the control chip U9; one end of the chip resistor R15 is electrically connected with the pin 1 of the main lamp wiring terminal CN1, and the other end of the chip resistor R15 is electrically connected with the pin 2 of the main lamp wiring terminal CN1; the positive terminal of the electrolytic capacitor CE3 is electrically connected to the pin 1 of the main lamp connection terminal CN1, and the negative terminal of the electrolytic capacitor CE3 is electrically connected to the pin 2 of the main lamp connection terminal CN 1.

As shown in fig. 2, the step-down circuit includes a control chip U2 with a model BP2525D, a chip resistor R22, a transformer L1, a thin film capacitor CY1, an electrolytic capacitor CE4, a chip resistor R8, a transformer L2, an electrolytic capacitor C2, a chip diode D5, a chip diode ZD1, a chip resistor R2, a thin film capacitor C1, a thin film capacitor C4, a chip resistor R6, and a chip diode D6; the chip resistor R22 and one end of the transformer L1 are electrically connected to the negative electrode end of the chip diode D4 together, and the chip resistor R22 and the other end of the transformer L1 are connected to the pin 4 of the control chip U2 together; the positive electrode end of the electrolytic capacitor CE4 is electrically connected with the pin 4 of the control chip U2, and the negative electrode end of the electrolytic capacitor CE4 is grounded; one end of the thin film capacitor CY1 is electrically connected with the pin 4 of the control chip U2, and the other end of the thin film capacitor CY1 is electrically connected with the positive electrode end of the electrolytic capacitor CE 2; one end of the chip resistor R8 is electrically connected with the pin 5 of the control chip U2, and the other end of the chip resistor R8 is electrically connected with the pin 1 and the pin 2 of the control chip U2; the pin 1 of the control chip U2 is electrically connected with one end of a transformer L2, and the other end of the transformer L2 is electrically connected with the positive electrode end of the electrolytic capacitor CE 2; the positive electrode terminal of the electrolytic capacitor C2 is electrically connected with the pin 3 of the control chip U2, and the negative electrode terminal of the electrolytic capacitor C2 is electrically connected with the pin 2 of the control chip U2; the negative electrode end of the patch diode D2 is electrically connected with the pin 3 of the control chip U2, the positive electrode end of the patch diode D2 is electrically connected with the negative electrode end of the patch diode D5, and the positive electrode end of the patch diode D5 is electrically connected with the positive electrode end of the electrolytic capacitor CE 2; the negative electrode end of the patch diode D6 is electrically connected with the pin 1 of the control chip U2, and the positive electrode of the patch diode D6 is grounded; one end of the film capacitor C4 is electrically connected with the pin 1 of the control chip U2, the other end of the film capacitor C4 is electrically connected with one end of the chip resistor R6, and the other end of the chip resistor R6 is grounded; the negative end of the patch diode ZD1 is electrically connected with the positive end of the electrolytic capacitor CE2, one end of the patch resistor R2 and one end of the thin film capacitor C1 are connected in parallel with the positive end of the electrolytic capacitor CE2, and the other end of the patch resistor R2 and the other end of the thin film capacitor C1 are connected with the ground in parallel.

The foregoing is only a preferred embodiment of the present utility model, and is not intended to limit the technical scope of the present utility model, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical substance of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A wall lamp driving circuit, comprising:

the input terminal is connected with the mains supply;

the step-down circuit is electrically connected with the rectifying and filtering circuit;

2. The wall lamp driving circuit according to claim 1, wherein the rectifying and filtering circuit comprises a fuse F1, a magnetic ring LM1, a varistor MOV1, an electrolytic capacitor CE2, a chip diode D4, and a thin film capacitor C3; one end of the fuse is electrically connected with the live wire input end of the input terminal, and the other end of the fuse is electrically connected with the pin 1 of the magnetic ring LM 1; a pin 3 of the magnetic ring LM1 is electrically connected with a zero line input end of the input terminal, a pin 2 of the magnetic ring LM1 is electrically connected with one end of the piezoresistor MOV1, and a pin 4 of the magnetic ring LM1 is electrically connected with the other end of the piezoresistor MOV 1; the positive electrode end of the electrolytic capacitor CE2 is electrically connected with the pin 2 of the magnetic ring LM1, and the negative electrode end of the electrolytic capacitor CE2 is grounded; the positive electrode end of the electrolytic capacitor CE1 is electrically connected with the negative electrode end of the patch diode D4, the positive electrode end of the patch diode D4 is electrically connected with the pin 4 of the magnetic ring LM1, and the negative electrode end of the CE1 is grounded; one end of the thin film capacitor C3 is grounded, and the other end of the thin film capacitor C3 is electrically connected with the pin 4 of the magnetic ring LM 1.

3. The wall lamp driving circuit according to claim 2, wherein the mode switching circuit comprises a control chip U1 of model HC18P110S-8P, an optocoupler U4 of model EL357, a chip resistor R1, a chip resistor R20, a chip resistor R4, and a triac BT1; the pin 1 of the control chip U4 is electrically connected with one end of the chip resistor R20, the other end of the chip resistor R20 is electrically connected with the pin 4 of the magnetic ring LM1, the pin 2 of the control chip U4 is grounded, the pin 3 of the control chip U4 is electrically connected with one end of the chip resistor R1, the other end of the chip resistor R1 is grounded, and the pin 4 of the chip resistor R1 is electrically connected with the pin 2 of the magnetic ring LM 1; the pin 1 of the control chip U1 is electrically connected with the pin 2 of the magnetic ring LM1, the pin 3 of the control chip U1 is electrically connected with the pin 3 of the control chip U4, the pin 8 of the control chip U1 is grounded, the pin 6 of the control chip U1 is electrically connected with the switch, the pin 7 of the control chip U1 is electrically connected with one end of the chip resistor R4, the other end of the chip resistor R4 is electrically connected with the G1 pin end of the bidirectional thyristor BT1, and the MT1 pin end of the bidirectional thyristor BT1 is electrically connected with the pin 2 of the magnetic ring LM 1.

4. A wall lamp driving circuit according to claim 3, wherein the night lamp connection circuit comprises a bidirectional thyristor BT2, a chip resistor R9, a night lamp connection terminal CN2 of 2 PIN; the MT1 pin end of the bidirectional thyristor BT2 is electrically connected with the pin 2 of the magnetic ring LM1, one end of the chip resistor R9 is electrically connected with the G1 pin end of the bidirectional thyristor BT2, the other end of the chip resistor R9 is electrically connected with the pin 6 of the control chip U1, the MT 2pin end of the bidirectional thyristor BT2 is electrically connected with the pin 2 of the night lamp connecting terminal CN2, the pin 2 of the night lamp connecting terminal CN2 is electrically connected with a live wire output end, and the pin 1 of the night lamp connecting terminal CN2 is electrically connected with a zero line output end.

5. The wall lamp driving circuit according to claim 3, wherein the main lamp constant current dimming driving circuit comprises a control chip U3 with the model number BP5178, a control chip U5 with the model number BP5178, a rectifier bridge BD1, a chip resistor R10, a chip varistor MOV2, a chip diode D1, a chip resistor R5, a chip capacitor C6, a chip resistor R11, a chip resistor R12, a chip resistor R7, a chip resistor R13, a chip resistor R16, a chip capacitor C7, a chip resistor R18, a chip resistor R19, a chip resistor R14, a chip resistor R21, a chip resistor R15, an electrolytic capacitor CE3, and a main lamp connection terminal CN1 of 2 PIN; the first alternating current input end of the rectifier bridge BD1 is electrically connected with one end of the chip resistor R10, the other end of the chip resistor R10 is electrically connected with the MT2 end of the bidirectional thyristor BT2, and the second alternating current input end of the rectifier bridge BD1 is electrically connected with the pin 4 of the magnetic ring LM 1; the positive terminal of the patch diode D1 is electrically connected with the positive terminal of the rectifier bridge BD 1; the negative end of the patch diode D1 is electrically connected with the pin 1 of the main lamp wiring terminal CN1; one end of the chip resistor R11 is electrically connected with the positive electrode end of the rectifier bridge BD1, and the other end of the chip resistor R11 is electrically connected with the pin 8 of the control chip U3; one end of the chip resistor R5 is electrically connected with the positive electrode end of the rectifier bridge BD1, and the other end of the chip resistor R11 is electrically connected with the pin 1 of the control chip U3; one end of the chip capacitor C6 is electrically connected with the negative end of the rectifier bridge BD1, and the other end of the chip resistor R11 is electrically connected with the pin 1 of the control chip U3; one end of the chip resistor R12 is electrically connected with the pin 3 of the control chip U3, and the other end of the chip resistor R12 is electrically connected with the pin 4 of the control chip U3; one end of the chip resistor R7 is electrically connected with the pin 4 of the control chip U3, and the other end of the chip resistor R7 is electrically connected with the negative end of the rectifier bridge BD 1; one end of the chip resistor R13 is electrically connected with the pin 5 of the control chip U3, and the other end of the chip resistor R13 is electrically connected with the pin 7 of the control chip U3; the pin 2 of the control chip U3 is electrically connected with the pin 1 of the main lamp wiring terminal CN1, the pin 7 of the control chip U3 is electrically connected with the pin 2 of the main lamp wiring terminal CN1, and the pin 6 and the pin 9 of the control chip U3 are electrically connected with the pin 6 of the control chip U5; one end of the chip resistor R16 is electrically connected with the positive output end of the rectifier bridge BD1, and the other end of the chip resistor R16 is electrically connected with the pin 1 of the control chip U5; one end of the chip resistor R14 is electrically connected with the positive output end of the rectifier bridge BD1, and the other end of the chip resistor R14 is electrically connected with the pin 8 of the control chip U5; one end of the chip resistor R19 is electrically connected with the pin 3 of the control chip U5, and the other end of the chip resistor R19 is electrically connected with the pin 4 of the control chip U5; one end of the patch capacitor C7 is electrically connected with the pin 1 of the control chip U5, and the other end of the patch capacitor C7 is electrically connected with the pin 6 of the control chip U5; one end of the chip resistor R18 is electrically connected with the pin 4 of the control chip U5, and the other end of the chip resistor R18 is electrically connected with the pin 6 of the control chip U5; one end of the chip resistor R21 is electrically connected with the pin 5 of the control chip U5, and the other end of the chip resistor R21 is electrically connected with the pin 7 of the control chip U5; the pin 6 of the control chip U5 is electrically connected with the pin 9 of the control chip U9; one end of the chip resistor R15 is electrically connected with the pin 1 of the main lamp wiring terminal CN1, and the other end of the chip resistor R15 is electrically connected with the pin 2 of the main lamp wiring terminal CN1; the positive electrode end of the electrolytic capacitor CE3 is electrically connected with the pin 1 of the main lamp connecting terminal CN1, and the negative electrode end of the electrolytic capacitor CE3 is electrically connected with the pin 2 of the main lamp connecting terminal CN 1.

6. The wall lamp driving circuit according to claim 2, wherein the step-down circuit comprises a control chip U2, a chip resistor R22, a transformer L1, a thin film capacitor CY1, an electrolytic capacitor CE4, a chip resistor R8, a transformer L2, an electrolytic capacitor C2, a chip diode D5, a chip diode ZD1, a chip resistor R2, a thin film capacitor C1, a thin film capacitor C4, a chip resistor R6, and a chip diode D6, which are of the model BP 2525D; the chip resistor R22 and one end of the transformer L1 are electrically connected to the negative electrode end of the chip diode D4 together, and the chip resistor R22 and the other end of the transformer L1 are connected to the pin 4 of the control chip U2 together; the positive electrode of the electrolytic capacitor CE4 is electrically connected with the pin 4 of the control chip U2, and the negative electrode of the electrolytic capacitor CE4 is grounded; one end of the thin film capacitor CY1 is electrically connected with the pin 4 of the control chip U2, and the other end of the thin film capacitor CY1 is electrically connected with the positive electrode end of the electrolytic capacitor CE 2; one end of the chip resistor R8 is electrically connected with the pin 5 of the control chip U2, and the other end of the chip resistor R8 is electrically connected with the pin 1 and the pin 2 of the control chip U2; the pin 1 of the control chip U2 is electrically connected with one end of the transformer L2, and the other end of the transformer L2 is electrically connected with the positive electrode end of the electrolytic capacitor CE 2; the positive electrode terminal of the electrolytic capacitor C2 is electrically connected with the pin 3 of the control chip U2, and the negative electrode terminal of the electrolytic capacitor C2 is electrically connected with the pin 2 of the control chip U2; the negative electrode end of the patch diode D2 is electrically connected with the pin 3 of the control chip U2, the positive electrode end of the patch diode D2 is electrically connected with the negative electrode end of the patch diode D5, and the positive electrode end of the patch diode D5 is electrically connected with the positive electrode end of the electrolytic capacitor CE 2; the negative electrode end of the patch diode D6 is electrically connected with the pin 1 of the control chip U2, and the positive electrode of the patch diode D6 is grounded; one end of the thin film capacitor C4 is electrically connected with the pin 1 of the control chip U2, the other end of the thin film capacitor C4 is electrically connected with one end of the chip resistor R6, and the other end of the chip resistor R6 is grounded; the negative electrode end of the patch diode ZD1 is electrically connected with the positive electrode end of the electrolytic capacitor CE2, one end of the patch resistor R2 and one end of the thin film capacitor C1 are connected in parallel with the positive electrode end of the electrolytic capacitor CE2, and the other end of the patch resistor R2 and the other end of the thin film capacitor C1 are connected in parallel and grounded.