Ground wire detection circuit

• Main Author: BAI ZHUHUI
• Format: Patent
• Language: Chinese; English
• Published: 01.01.2021
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The utility model relates to a ground wire detection circuit which is characterized by comprising a rectification circuit, a filter circuit and a state selection circuit which are electrically connected. By adding the first-stage half-wave rectification and filter circuit, input signals are smoother and are not interfered by various external modules, whether the current is grounded well or not canbe judged in the charging process, the low level can be output if the current is disconnected from the ground, detection is safe and reliable, and the circuit can be widely applied to the field of electronics. 本实用新型涉及一种地线检测电路，其特征在于，包括：通过电连接的整流电路、滤波电路、状态选择电路。通过增加一级半波整流和滤波电路，使输入信号更加平滑，不受外面各种模块的干扰，在充电过程中不管是哪种电流，都能够判断有没有接地良好，断开大地则输出低电平，检测安全可靠，可普遍适用于电子领域。