“支农70—2”电测仪锌汞电池充电器的设计与制作

Designing & Manufacturing of charger for Zinc-Mercuric Oxide Cell in "Zhinong 70-2" Electronic Measure Meter

“支农 70— 2”型电侧仪一直是基层水利单位进行地面电法找水和电测井的仪器之一。为解决该仪器内所用“锌汞电池”因电压下降需要更换又难以购买的问题 ,笔者设计并制作出一种可给锌汞电池充电的充电器 ,现撰文将其基本原理、线路结构、元件选用及制作方法作以介绍。

Zhinong 70-2' Electronic Measure Meter has been one of the principal equipments for some water conservancy units to do electrical ground tapping and logging, in which the zinc-mercuric oxide cells are not easily available when need replacing. In view of the problems, the writers has designed a kind of charger for such cell and explained its basic principle, circuit structures, components selection, and manufacture process as well.