The invention relates to flickering voltage output equipment. The flickering voltage output equipment comprises a signal source, a processing device, a digital-to-analog conversion device, a power amplifier, a transformer and a voltage output port. The digital-to-analog conversion device is connected with the signal source, the processing device and the power amplifier. The transformer is connected with the power amplifier and connected with power quality detection equipment through the voltage output port. The signal source outputs equi-amplitude sine signals to the digital-to-analog conversion device, the processing device outputs preset values to the digital-to-analog conversion device according to the preset change frequency, the digital-to-analog conversion device outputs flickering signals to the power amplifier according to the equi-amplitude sine signals and the preset values, the power amplifier outputs the amplified flickering signals to the transformer, and the transformer outputs flickering voltage to the verified power quality detection equipment. The flickering voltage serves as standard signals to be output to the power quality detection equipment and can be used for verifying the power quality detection equipment.