Labada howlihiis ee ugu waaweyn ee keli ah waa:
Elektaroonigga Elektaroonigga ah:Shaqada koowaad ee kalida 'solenoid' waa in lagu beddelo tamarta korantada dhaqdhaqaaqa farsamada toosan. Marka qulqulka korantada ee korantada la maro xijaabka siligga ee ku taal solonoid, waxay abuurtaa dhul magnetic. Goobtan magnetic waxay la falgashaa qayb laqaban karo (sida tuubbada ama sangiga) gudaha sononoid, taasoo keenta inay dhaqaaqdo. Mooshinka toosan ee uu soo saaray kelida ayaa loo isticmaali karaa ujeeddooyin kala duwan, sida furitaanka ama xiritaanka tuubooyinka farsamada, ama kaqaybgalka qaybaha farsamada, ama ka-hortagga farsamada.
Beddelka ama Xakamaynta Hawlaha:Sololoids waxaa badanaa loo isticmaalaa sidii loo beddelo ama xakameeya korantada korantada. Codsiyada sida Relays, oo ah kelidii ayaa loo shaqeeyaa si loo xakameeyo furitaanka ama xidhitaanka korantada xiriirka korantada. Marka keli-yaraha uu xoojinayo, waxay kici kartaa wareejinta, u oggolaanshaha ama carqaladeysa qulqulka korantada hadda. Shaqadan ayaa muhiim u ah aalado kala duwan iyo nidaamyo, oo bixiya hab ka fog ama xakamaynta otomatiga ah.
Labadan howl ee ugu waaweyn ayaa ka dhigaya qaybo isku mid ah oo leh codsiyo baahsan oo ku saabsan warshadeeya warshado u dhexeeya baabuurta iyo wax soo saarka elektiroonigga iyo qalabka korantada.
