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Name: John M.
Status: Other
Age: Old
Location: N/A
Country: N/A
Date: 2001


Question:
I have a transformer that does not tell what type it is all it has is a long line with three short dashes under it.Can you tell me if it is AC or DC by this symbol.Thank you.



Replies:
John

I am not an engineer, but I have been around a lot of transformers. I am not aware of a DC transformer. The changing flux of AC in the primary is required to induce a current in the secondary.

The closest thing to a DC transformer is a saturated core reactor. It uses a DC current to increase the density of the magnetic flux in the core thereby decreasing the loses to the AC signal impressed over the DC signal. A rather unusual situation and likely not yours.

I do not know your symbol, but it might be the electrical symbol for a transformer with a portion missing.

Larry Krengel



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