Low voltage dimming power supply

Abstract

The invention relates to a low-voltage dimming power supply, which includes an EMI filter circuit, a PFC circuit module, a DC-DC circuit module, a low-voltage starting circuit, an alternating current sampling circuit, a dimming signal output circuit and a constant current adjustable dimming circuit; PFC The circuit module is connected to the EMI filter circuit; the DC-DC circuit module is connected to the PFC circuit module; the low-voltage starting circuit is used to supply power to the PFC circuit module and the DC-DC circuit module; the AC sampling circuit is used to sample the AC; dimming The signal output circuit is connected to the AC sampling circuit; it is used to receive the sampling signal output by the AC sampling circuit and output the corresponding dimming signal; the constant current adjustable dimming circuit is connected to the dimming signal output circuit and the DC-DC circuit module; used for Receive dimming signal and output corresponding constant current. The invention reduces the user's use risk through the input setting of the low AC voltage; through the setting of the constant current adjustable light circuit and the light adjustment signal output circuit, the light brightness of the present invention can be adjusted to save energy consumption.

Description

technical field [0001] The invention relates to the field of power supplies, more specifically, to a low-voltage dimming power supply. Background technique [0002] With the development of power supply technology, power supplies are used in various fields. In the field of traffic lights, the currently used traffic lights are all high-voltage AC (85-264V AC) input, and there are certain potential safety hazards in power consumption. In an environment with weak external light, it is impossible to reduce the luminous brightness of traffic lights, which is neither energy-saving nor environmentally friendly. [0003] Therefore, it is necessary to develop a power supply with low voltage input and adjustable luminance. Contents of the invention [0004] The invention provides a low-voltage dimming power supply with low energy consumption and low energy consumption, which is used for low AC input, reduces potential safety hazards of power consumption, and has adjustable luminanc...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a low-voltage dimming power supply with low energy consumption and low energy consumption, which is used for low AC input, reduces potential safety hazards of power consumption, and has adjustable luminance of traffic lights. Hidden dangers and the technical problem that the brightness of traffic lights cannot be adjusted

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