关于 阴极-灯丝最大电压

locky_z

如果用双3极管上下串联起来，做成类似和田贸方式电路，如果灯丝也接地，这样上面三极管的阴极对灯丝很容易就超过该管的"阴极-灯丝"电压，会不会有问题？

fu-80

所以```一般垫高100V左右就可以了

drcy

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0002300182

把灯丝电压抬高！