《医疗卫生装备》1999年第 4期 38页刊登了一篇隔水式电热恒温培养箱电路控制系统的革新文章。该文对指导检验人员或设备维修人员对旧式设备做花钱不多的小改造是很实用的 ,是值得推广的。但原文电路尚可进一步简化 ,简化后的电路见图 1,图 1电路省去了成本较高且难以购买的电 “Healthcare Equipment”, No. 4, 1999, page 38, published an article on the innovation of the circuit control system for water-isolated incubators. This article is very useful for instructing inspectors or equipment maintenance personnel to make small modifications to old-fashioned equipment, which is worth promoting. However, the original circuit can be further simplified. The simplified circuit is shown in Figure 1. The circuit in Figure 1 eliminates the costly and difficult to purchase electricity.