<a href="https://en.wikipedia.org/wiki/en:Capacitor" class="extiw" title="w:en:Capacitor">Capacitor</a> symbol according to GOST 2.728-74.
No machine-readable author provided. <a href="//commons.wikimedia.org/wiki/User:Sergey_kudryavtsev" title="User:Sergey kudryavtsev">Sergey kudryavtsev</a> assumed (based on copyright claims).
No machine-readable source provided. Own work assumed (based on copyright claims).