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根据心脏在跳动时放出的微弱电信号来判断心脏是否健康是准确判断心脏功能的方法之一。但是这些微弱电信号是不可能轻易获得的,它要通过高输入阻抗的放大器放大后,再把这些信号送给记录表头,然后才能看到心脏的跳动情况。这里采用动铁式表头作记录表头。下面介绍动铁式表头的结构和原理。
According to the heart beating small electrical signal to determine whether the heart is healthy and accurate assessment of cardiac function is one way. However, these feeble electrical signals are not readily available. They are amplified by amplifiers with high input impedances and sent to the meter header before they can be seen. Here the use of moving iron table for recording header. The following describes the structure and principle of moving iron table.