Pronunciation digital display insulator null value tester

The utility model discloses a pronunciation digital display insulator null value tester, it belongs to circuit testing instrument field, and it includes main control chip, high frequency variable pressure circuit, sampling resistor circuit, AD converter, liquid crystal display module and voice broadcast module, main control chip's control signal output inserts the input of being surveyed the insulator through the high frequency variable pressure circuit, the output of being surveyed the insulator inserts the input of sampling resistor circuit, the output of sampling resistor circuit inserts main control chip's input, main control chip's the audio signal output of looking inserts through the AD converter liquid crystal display module and voice broadcast module. The utility model has the advantages that the operation safety and stability, operation safety shows result accuracy more directly perceived. 本实用新型公开了种语音数显绝缘子零值测试仪，其属于电路测试仪器领域，其包括主控芯片、高频变压电路、取样电阻电路、A/D转换器、液晶显示模块和语音播报模块；所述主控芯片的控制信号输出端经高频变压电路接入被测绝缘子的输入端，所