This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
NiobNioboxidSinterzelle. de Querschnitt durch die kapazitive Zelle eines Niob oder NioboxidElektrolytkondenstors own Elcap CC Electrolytic capacitors Cczero
Page 2023 Free-images.com. All images are Public Domain