工程师们喜欢通过多种方法简化设计流程。我*喜欢的是一直采用低阻抗电源驱动模数转换器(ADC)输入。为什么我会对这种方法情有独钟?因为它可为数据采集模块带来诸多优势。我们首先来看一种常见应用，其中需要将高电压信号源进行电平转换，将其转换为所需的ADC输入范围。中的简单分压器可用来解决该问题，即将+/-5V信号电平转换为0-5V。该分压器的等效阻抗Req等于R1与R2的并行结合。
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冶金电气设备主要有以下几点特性：抗污染性。因为冶金领域需运用数量较多的钢铁，因此在冶炼环节里面会形成非常多的粉尘，其间含有较多的导电性粉尘，其便代表此领域的电气设施需具备一定的抗污染性。抗干扰与抗振性。电气设备是一种电子设备，然而只要是电气设施便需具备相应的抗干扰与抗振性，因此冶金领域的电气设施同样需要具备此特性。从冶金工业层面而言，现场需运用较大规模的电炉与轧钢系统，此设施在传动与供电环节便会产生较多的对控制系统于设施造成影响的谐波，因此其需要具备一定的抗干扰与抗振性。
