Dimmable power supply capable of displaying output parameters

Abstract

The invention relates to a dimmable power supply capable of displaying output parameters. The dimmable power supply comprises a sampling circuit, an operational control circuit, a display unit and a dimming unit, wherein the sampling circuit is used for sampling the actual output signal of the dimmable power supply and generating a sampling signal; the sampling circuit comprises a voltage samplingcircuit and a current sampling circuit; the voltage sampling circuit can be connected with the positive output bus of the dimmable power supply and is used for sampling the actual output voltage of the dimmable power supply and generating a sampled voltage; the current sampling circuit is connected with the negative output bus of the dimmable power supply and used for sampling the actual output current of the dimmable power supply and generating a sampled current; the operational control circuit is connected with the voltage sampling circuit and the current sampling circuit separately and used for receiving the sampled voltage and the sampled current and generating output parameters according to the sampled voltage and the sampled current; the display unit is connected with the operational control circuit and used for receiving and displaying the output parameters; and the dimming unit is connected with the operational control circuit and used for receiving a dimming start signal andoutputting the current and / or the voltage according to the dimming start signal. By virtue of the dimmable power supply, the output parameters of the dimmable power supply can be displayed in real time.

Description

technical field [0001] The invention relates to the technical field of power supplies, more specifically, to an adjustable light power supply capable of displaying output parameters. Background technique [0002] Existing dimmable power supplies, especially dimmable LED power supplies, are more and more widely used, and play a very important role in the construction of smart city systems. All signal systems are transferred through dimmable power supplies, such as various external Sensors are used for weather, temperature, wind, smog, traffic flow, people flow, video information, wifi access, various payment systems and public information query systems, etc. The dimmable feature of LED power supply is the secondary energy-saving technology of LED lamps It brings possibility, and it plays a very important role in satisfying people's energy-saving effect of LED lamps, and is currently widely used. [0003] However, the output parameters of the LED drive power supply, such as o...

AI Technical Summary

Problems solved by technology

[0005] 1. The output voltage and output current can be changed automatically through external adjustment within a certain range, but the specific output voltage and current values ​​cannot be displayed intuitively, and need to be displayed with the help of external professional equipment. Conducive to the use and promotion of products

[0006] 2. The existing three-in-one intelligent dimming power supply has three dimming methods: external resistor dimming, 0-10V analog voltage dimming and PWM digital signal dimming. The actual dimming percentage can be calculated in reverse through the change of the output voltage and current, plus some signal interference and attenuation during the transmission of the dimming signal, which cannot truly reflect the actual dimming percentage

[0007] 3. When the end customer uses the dimmable power supply, due to the deviation of the understanding of the actual load voltage and current parameters, it may cause over-power use during actual use, resulting in abnormal use of the power supply and damage

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