# Is there a standardised noise source symbol for circuit diagrams?

Does anyone know of any standard symbol for a noise source, for example of one wants to represent the Johnson-Nyquist noise, what is best to use?

• You can see some symbols used on this Wiki page: Johnson-Nyquist Noise. But I just made up one for fun, too: $\require{enclose}\enclose{box}{\enclose{circle}[mathcolor="red"]{\overset{\mathcal{N}(\mu,\,\sigma^{2})}{\hookrightarrow}}}$ – jonk Apr 28 at 21:41
• @jonk I quite like yours! Put it in a circle and we've got a deal. Thanks for the reference, do you happen to know if this is a standard? – QuantumPenguin Apr 28 at 23:08
• No. I've no clue if there even is a standard. If there was a standard for it in the general EE area I'd probably have seen it. There may be standards within narrow little Ph.D. niches where they have to communicate and have developed their own "language" out of sheer need. But I've not been exposed to them, if so. – jonk Apr 28 at 23:45