AC voltage source symbol
Also called AC supply, Sine source
A source of alternating voltage, marked with a sine wave.
ANSI / IEEE
IEC 60617
What the AC voltage source symbol means
A source of alternating voltage, marked with a sine wave.
ANSI and IEC symbols
Where you see it
The mains supply on a circuit diagram, and AC sources in simulations.
What is written next to it
On a schematic, the AC voltage source usually carries its voltage and frequency, such as 230 V 50 Hz.
Related symbols
Frequently asked questions
What does the AC voltage source symbol look like?
On ANSI drawings: A circle with a sine wave inside. In IEC 60617: The same circle and sine wave.
Is the AC voltage source symbol the same in IEC and ANSI?
Yes, it is drawn the same way in most legends.
Where is a AC voltage source used?
The mains supply on a circuit diagram, and AC sources in simulations.
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