其原理包括参考电压电流电路，2.7V及1.8V电压调整电路，过流保护电路以及低压检测电路四个部分。
The schematics includes four parts: bandgap reference voltage and reference current, 2.7V and 1.8V regulator, over-load protection , Low Battery Detection (LBD) .
在我国，针对高电压等级的电缆绝缘检测技术受到了普遍的重视，但是针对低压配电网的电线电缆绝缘检测技术的研究却进展不大。
This thesis focuses on the research and development of the insulation resistor measuring for low-voltage wire and cable. The first part of the thesis has a review-like character.
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