Power supply circuit with rectification protection for illuminating lamp

The utility model relates to the technical field of lighting circuits, in particular to a power supply circuit with rectification protection for a lighting lamp, which comprises a power supply unit, an adjusting unit and a lighting unit. According to the utility model, the mains supply filters high-frequency clutters through the power connection module and outputs ripple direct current, the conversion module rectifies to suppress the ripple of the direct current and stabilizes and outputs the voltage of the voltage transformation module, thereby providing a stable power supply for the voltage transformation module. And the voltage transformation module controls the load module by adjusting the output power supply voltage so as to control the luminance of the lighting unit. 本实用新型涉及照明电路技术领域，具体地说，涉及一种具有整流保护的照明灯具用供电电路，包括供电单元、调节单元和照明单元。本实用新型中，市电经接电模块滤除高频杂波，输出纹波直流电，由转换模块进行整流抑制直流电的纹波，并稳定输出值变压模块的电压，为变压模块提供稳定的电源，变压模块通过调节输出的电源电压控制负载模块进而控制照明单元的发光亮度。