Electrical relay (upper left) and connectors. A relay consists of wire tightly wound round a core of magnetic metal. When electric current flows through the wire it magnetizes the metal and triggers a switch that controls a separate device. Wires and connectors are seen at lower right | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Knapton, Chris |
Taille de l’image : | 3213 px × 4400 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |