描述:Metal Film Resistors - Through Hole Manufacturer:TT Electronics Product Category:Metal Film Resistors - Through Hole Product Attribute:Attribute Value
有个小问题想问一下各位大佬:一个 AC 220V 转 DC 13.6V(1.45A)的变压器,经过一个整流桥整流,再进入7812之前想加一个PTC自恢复保险丝以做保护。过了整流桥后 电压最大值就变成了13.6*根号2 即19.23V。那么自恢复保险丝的最大电压,我应该选典型值里的 16V还是24V的?
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