The newly fitted parts are the current overlad automatin protection system,the direct viewing ammeter and the power-supply control switch.

新设过载自动保护系统，直观表及源控开关。

The main structure have:Electromagnet and Heng galvanism source, numerical type Gauss account(the effect of Huo Er) and ammeter and volt account, have control dish of illuminate the system.

磁铁源、数字高斯计 （霍尔效应）、安培计伏特计、配有照明系统的控盘。