Dimming and toning circuit

Abstract

The present invention provides a dimming and toning circuit. The circuit comprises: a switching circuit used for performing switching among an intelligent mode, a microwave mode and a manual mode according to a switching instruction; a first driving circuit which acquires a first adjusting signal to adjust the current value of the output end of the first driving circuit; and a second driving circuit which acquires a second adjusting signal to adjust the current value of the output end of the second driving circuit. In the intelligent mode, a cold white light load performs power adjustment according to the current value output by the first driving circuit, and a warm white light load performs power regulation according to the current value output by the second driving circuit; in the microwave mode, the cold white light load and the warm white light load perform power adjustment according to the current value output by the second driving circuit; and in the manual mode, the power of the cold white light load and the power of the warm white light load are adjusted according to a dimming instruction. The dimming and toning circuit has the beneficial effects that: the circuit structure is simple, the cost is low, a user can select the operation mode of dimming and color modulation, and the use experience is improved.

Description

technical field [0001] The invention relates to the technical field of light-emitting diode regulation, in particular to a light-adjusting and color-adjusting circuit. Background technique [0002] At present, lighting devices based on light-emitting diodes are widely used in daily life, among which lighting devices that support lighting brightness adjustment and lighting color temperature adjustment are particularly popular. [0003] The adjustment of lighting brightness is dimming, which is realized by adjusting the power of the lamp load in the lighting device; the adjustment of lighting color temperature is temperature adjustment. The lamp load includes cool white load and warm white load. By adjusting the power of cool white load and warm white load respectively, To achieve color temperature adjustment, for example: when the power of the cool white load is high and the power of the warm white load is low, the color temperature of the lighting load of the lamp is low at ...

AI Technical Summary

Problems solved by technology

On the one hand, there is the defect that the circuit for controlling the lighting device for dimming and color adjustment is relatively complicated; on the other hand, when the lighting device fails, it is necessary to check the program in the single-chip microcomputer system and check the hardware facilities. The hardware facilities of the single-chip microcomputer system are integrated circuits, which are not easy to maintain

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