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Two overlapping circles on a line.
Also known as: Two circle transformer symbol, Power transformer symbol
The single-line diagram symbol for a transformer, drawn as two interlinked circles.
Marks a transformer on a single-line diagram.
Contexts: Technical drawing
Overlaps its two circles to stand for magnetic coupling, so the symbol shows that the two sides are linked without being connected, which is the whole point of the device.
Contexts: Technical drawing
Two circles drawn overlapping on the conductor line, the overlap standing for the magnetic coupling between windings.