Elektromagnet


Ein elektromagnet er ein spole (magnetspole), ein spiralforma leiar, som det vert sett spenning på, slik at han dannar eit magnetfelt. Magneten kan brukast til å laga ei mekanisk rørsla, ved at straumen vert skrudd av og på.



Vanege bruksområde for elektromagnetar er m.a. magnetventilar, som er enkle av- og på-ventilar, i relé og elektromotorar. Prinsippet med at ein spole dannar eit magnetfelt, vert òg brukt i transformatorar.



Spire Denne teknologiartikkelen er ei spire. Du kan hjelpe Nynorsk Wikipedia gjennom å utvide han.


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