Reply to "Why is there DC voltage coming from variable TIU channels"

George SOGR Forum Member

GGG posted:
Fix channels pass input power directly through to the output. THe VAR channels us power FET to control both halfs of the input power. That is why the output is controllable for VAR and Not for Fixed. What level is the DC component? Do you have voltage control of the variables? If you swap a Var input source to a fixed channel, does the syptom stay on the VAR channel or move to the fixed with that power supply. G

George,

Is the FET a MOSFET? Can it be that the FET went bad and is converting AC to DC? MOSFETs are capable of doing that. I may be way out in left field here... wavey

George

1/29/1810:31 AM

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