CJ1001 Varistor DC Parameter Meter is mainly used to measure the three parameters of varistor voltage (u_N) (or DC reference voltage), nonlinear index (α) and leakage current (I_L) of voltage-limited volt-ampere characteristic devices (varistors, zinc oxide lightning arresters, voltage regulators, etc.). The design of the instrument complies with the technical standards GB∥10193, GJB172 and the regulations of "Safety Requirements for Varistors for Electronic Equipment". This instrument can also be used as a general DC power supply, so it is a multi-functional and multi-purpose laboratory instrument.