搜索 - 科创

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上面的那些谈话怎么越来越感觉到有点虚了那个TL494谐振的说说你是怎么保证高压包在不同负载下如何用定频的PWM控制IC来实现PFM控制来追频吧再说说全桥情况下用什么方式来导通桥臂的

电路就几个元件，电路是由PFM升压IC QX2303-50E控制调节，效率高，低纹波，1--3节电池做输入；此IC价格合理（约RMB 0.15元1PCS），可做手机便携式充电器。

我收了一个IGBT模块当强制关短时，ec表针(红e黑c)就很轻微的动了下电阻大的很，当强制导通时ec正向400欧姆反向400欧姆我用的是指针表fm47, 10k欧档测量的

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