CN202750265U - LED (Light-Emitting Diode) energy-saving voltage-reduction circuit system - Google Patents

Abstract

The utility model discloses an LED energy-saving step-down circuit system, which sequentially includes a power supply connected to each other, a transformer, a voltage comparator, a PWM module, an LED lamp and an MCU microcontroller; the output end of the power supply circuit is connected to the input end of the transformer, and the transformer The output terminal of the voltage comparator is connected to the input terminal with relatively strong voltage, the output terminal of the voltage comparator is connected to the input terminal of the PWM module, the output terminal of the PWM module is connected to the input terminal of the LED light, the output terminal of the LED light is connected to the input terminal of the MCU microprocessor, and the input terminal of the MCU Connect to power. After the electrical signal is input to the MCU microcontroller, the output voltage is sent to the negative terminal of the LED light-emitting diode, the voltage difference between the two ends of the LED light-emitting diode is reduced, and the heat generation of the LED light-emitting diode is reduced, so that the LED energy-saving lamp reaches a thermal balance at a lower temperature and saves electric energy. , while prolonging the service life.

Description

An LED energy-saving step-down circuit system

technical field

The utility model relates to a household lighting device, in particular to an LED energy-saving and step-down circuit system.

Background technique

LED is a semiconductor light-emitting diode. LED energy-saving lamps use high-brightness white light-emitting diodes as light sources. They have high luminous efficiency, low power consumption, long life, easy control, maintenance-free, safety and environmental protection; Bright, colorful, low loss, low energy consumption, green and environmental protection, suitable for long-term lighting in families, shopping malls, banks, hospitals, hotels, restaurants and other public places. Flash-free direct current, very good protection for the eyes, is the best choice for desk lamps and flashlights.

LED energy-saving lamps are a new generation of lighting sources after compact fluorescent lamps (ie ordinary energy-saving lamps). Compared with ordinary energy-saving lamps, LED energy-saving lamps are environmentally friendly and do not contain mercury, can be recycled and reused, low power, high light efficiency, long life, instant lighting, resistance to frequent switching, low light decay, rich colors, dimmable, rich changes . Extensive use of ordinary energy-saving lamps will cause mercury pollution, pollute soil and water sources, and indirectly pollute food. The environmental hazards cannot be underestimated.

LED has the advantages of high efficiency and energy saving, long life, health, environmental protection, vision protection, high light efficiency, high safety factor, and great market potential.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and provide an LED energy-saving and step-down circuit system, which has the advantages of simple structure, energy saving, environmental protection, safety and reliability, low cost and long service life.

In order to achieve the above object, the technical solution adopted by the utility model is: an LED energy-saving step-down circuit system, the LED energy-saving step-down circuit system sequentially includes a power supply connected to each other, a transformer, a voltage comparator, a PWM module, an LED lamp And MCU microcontroller; the output end of the power circuit is connected to the input end of the transformer, the output end of the transformer is connected to the input end of the voltage comparator, the output end of the voltage comparator is connected to the input end of the PWM module, and the output end of the PWM module is connected to the input end of the LED lamp , the output end of the LED light is connected to the output end of the MCU microprocessor, and the input end of the MCU microprocessor is connected to the power supply. The output terminal of the transformer is connected to a resistor R1 with the input terminal of the MCU microprocessor.

Compared with the prior art, the beneficial effect of the utility model is: after the electrical signal is input to the MCU microcontroller, the output voltage is modulated and demodulated to the negative end of the LED light-emitting diode, the voltage difference between the two ends of the LED light-emitting diode is reduced, and the LED emits light. The heat reduction of the diode makes the LED energy-saving lamp reach a thermal balance at a lower temperature, which saves electric energy and prolongs the service life at the same time.

Description of drawings

   Fig. 1 is the schematic diagram of the circuit structure of the utility model.

Detailed ways

The following will be described in detail with reference to the accompanying drawings in conjunction with the embodiments, so as to further explain the technical features and advantages of the present utility model.

The schematic diagram of the circuit structure of the present utility model is shown in Figure 1, an LED energy-saving step-down circuit system. And MCU microcontroller; the output end of the power circuit is connected to the input end of the transformer, the output end of the transformer is connected to the input end of the voltage comparator, the output end of the voltage comparator is connected to the input end of the PWM module, and the output end of the PWM module is connected to the input end of the LED lamp , the output end of the LED light is connected to the output end of the MCU microprocessor, and the input end of the MCU microprocessor is connected to the power supply. The output terminal of the transformer is connected to a resistor R1 with the input terminal of the MCU microprocessor.

The working principle of the utility model is as follows: After the power supply voltage is input, it is transformed by a transformer, and then output to the LED lamp group after being modulated and demodulated by the PWM module through the voltage comparator, and the output end of the LED lamp group is connected to the MCU microprocessor. After the electrical signal is input to the MCU microcontroller, the output voltage is modulated and demodulated to the negative terminal of the LED light-emitting diode, the voltage difference between the two ends of the LED light-emitting diode is reduced, and the heat generation of the LED light-emitting diode is reduced, so that the LED energy-saving lamp reaches thermal balance at a lower temperature , saving electric energy and prolonging the service life at the same time.

The contents mentioned in the above embodiments are not limitations of the present utility model, and any obvious replacements are within the protection scope of the present utility model without departing from the utility model concept of the present utility model.

Claims (1)

1. the energy-conservation reduction voltage circuit of LED system, it is characterized in that: the energy-conservation reduction voltage circuit of described LED system comprises interconnective power supply, transformer, voltage comparator, PWM module, LED lamp and MCU microcontroller successively; The input of the output connection transformer of power circuit, the output of transformer connects the input of voltage comparator, the output of voltage comparator connects the PWM module input, PWM module output connects LED lamp input, LED lamp output connects the output of MCU microprocessor, the input termination power of MCU microprocessor; The output of described transformer is connected a resistance R 1 with the input of MCU.

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