High-precision alternating-current impedance testing device and control method

The invention relates to the technical field of measurement application, in particular to a high-precision alternating-current impedance testing device which comprises a tester, the top of the tester is fixedly connected with a power supply control assembly, the power supply control assembly comprises a cover plate and a fixed seat, the cover plate is fixedly connected to the top of the fixed seat, and the cover plate is fixedly connected to the top of the fixed seat. The fixed seat is fixedly connected to a tester, the middle part of the cover plate is rotatably connected with an anti-mistaken touch piece, the two sides of the bottom of the cover plate are fixedly connected with supporting rods, the bottom between the two supporting rods is fixedly connected with an arc-shaped rod, and the two sides of the top of the arc-shaped rod are provided with through arc-shaped grooves; the invention further discloses a control method of the high-precision alternating-current impedance testing device. According to the