在电生理的研究中,常需将电极插入体内特定部位,引入电刺激。普通的方波电子刺激器只能产生单向方渡,刺激时间较长时,将使电极极化,影响刺激效果。为了保证刺激效果稳定,我们设计了“双向方波电子刺激器”(图1),它产生大小相等方向相反频率可调的双向方波。经初步使用,证明此仪器操作方便,性能稳定,经3～4小时试验,对被刺激神经无损伤。 In electrophysiological studies, often need to insert the electrode into a specific part of the body, the introduction of electrical stimulation. Ordinary square wave electronic stimulator can only produce one-way square crossing, stimulation time is longer, the electrode will be polarized, affecting the stimulation effect. In order to ensure the stimulation effect is stable, we designed a “two-way square wave electronic stimulator” (Figure 1), it produces the same size, the opposite direction of the frequency reversible square wave. After initial use, this instrument proved convenient operation, stable performance, after 3 to 4 hours of testing, the nerve was stimulated no damage.