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

新设流过载自动保护，直观式流表及源控制开关。

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.

磁铁和恒流源、数字式高斯计 （霍尔效应）、安培计和伏特计、配有照的控制盘。