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Russlk said:zero current.
Nigel, I think you are forgetting about reactive loads - in this case, inductive.Nigel Goodwin said:How about both?, if you have zero voltage you have zero current, and likewise, if you have voltage you automatically have current - assuming a conducting path is present.
You said it had 3VA printed on the case.dava said:Thank you all for your answers! but I still have some doubts. How do you calculate 4K impedance? The solenoid I want to drive is about 3"X3"X3" so it doesn't look that little and it is pretty powerful, 40ma seems very little current for this kind of solenoid.
David.
Nigel Goodwin said:How about both?, if you have zero voltage you have zero current, and likewise, if you have voltage you automatically have current - assuming a conducting path is present.