1. Anvendelse av reléer i biler
Relays are widely used in automobiles. As shown in the figure below, it is the X contact unloading relay on Volkswagen. The "30" terminal is the power supply input end of the relay contact, the "87" terminal is the power supply output end of the relay contact, and the "86" The terminal is the coil power supply terminal, and the "85" terminal is the coil ground terminal.
When the relay coil is energized, the current passes through the terminals "86" and "85" to excite the coil. Due to the magnetic attraction of the coil, the contact between the "30" terminal and the "87" terminal is closed.
When the coil is powered off, the magnetic force of the coil also disappears, and the movable contact will return to its original position under the reaction force of the spring, so that the contact between the "30" terminal and the "87" terminal is disconnected.
2. Installasjonssted
Reléet er vanligvis installert i den sentrale strømfordelingsboksen, som vist i figuren nedenfor.
