Electromagnetic coil 14550884 ya Volvo excavator

Sinthani zizindikiro zazikulu zogwirira ntchito

Mndandanda wa machitidwe a coil inductance makamaka kukula kwa inductance. Kuphatikiza apo, nthawi zambiri, bala la waya wokhala ndi coil inductance nthawi zonse amakhala ndi kukana kwina, komwe nthawi zambiri kumakhala kochepa kwambiri ndipo kumatha kunyalanyazidwa. Komabe, pamene magetsi akuyenda m'mabwalo ena ndi aakulu kwambiri, kukana pang'ono kwa koyilo sikungathe kunyalanyazidwa, chifukwa magetsi akuluakulu amatha kuwononga mphamvu pa koyilo, zomwe zimapangitsa kuti koyiloyo itenthe kapena kutenthedwa, choncho nthawi zina magetsi mphamvu yomwe koyilo imatha kupirira iyenera kuganiziridwa.

Inductance

Inductance l imayimira mawonekedwe amtundu wa koyiloyo, mosasamala kanthu zapano. Kupatula koyilo yapadera ya inductance (inductance yamitundu), inductance nthawi zambiri siyimalembedwa mwapadera pa koyiloyo, koma yolembedwa ndi dzina linalake. Inductance, yomwe imadziwikanso kuti self-inductance coefficient, ndi kuchuluka kwakuthupi komwe kukuwonetsa kuthekera kwa inductance. Inductance ya inductor makamaka imadalira kuchuluka kwa kutembenuka kwa koyilo, njira yokhotakhota, kupezeka kapena kusapezeka kwa pachimake ndi zinthu zapakatikati, ndi zina zambiri. kukula kwa inductance. The inductance ya koyilo yokhala ndi maginito pachimake ndi yayikulu kuposa ya koyilo yopanda maginito pachimake; Kuchuluka kwa maginito permeability wa pachimake, ndi yaikulu inductance.

Chigawo choyambirira cha inductance ndi Henry (Hen mwachidule), chomwe chimayimiridwa ndi chilembo "H". Magawo omwe amagwiritsidwa ntchito kwambiri ndi milli-Heng (mH) ndi micro-Heng (μH), ndipo ubale pakati pawo ndi:

1H = 1000mH

1mH = 1000μH

Kuchita kwa inductive

Kukula kwa kukana kwa koyilo ya inductance ku AC pano kumatchedwa inductance XL, ndi ohm ngati unit ndi ω ngati chizindikiro. Ubale wake ndi inductance L ndi AC pafupipafupi F ndi XL = 2πfL.

Quality factor

Mtundu wa Q ndi kuchuluka kwa thupi komwe kumayimira mtundu wa koyilo, ndipo Q ndi chiŵerengero cha inductance XL kukana kwake kofanana, ndiye kuti, Q = XL/R. inductor imagwira ntchito pamagetsi ena afupipafupi a AC. Kukwera kwa mtengo wa Q kwa inductor, kumachepetsa kutayika komanso kumapangitsanso magwiridwe antchito. Mtengo wa q wa koyilo umagwirizana ndi kukana kwa DC kwa woyendetsa, kutayika kwa dielectric kwa chigoba, kutayika komwe kumachitika chifukwa cha chishango kapena pachimake chachitsulo, chikoka champhamvu kwambiri pakhungu ndi zinthu zina. Mtengo wa q wa koyilo nthawi zambiri umakhala khumi mpaka mazana. Ubwino wa inductor umagwirizana ndi kukana kwa DC kwa waya wa coil, kutayika kwa dielectric kwa chimango cha koyilo komanso kutayika komwe kumachitika chifukwa cha pachimake ndi chishango.