nkhani

Zikafika pa inductor, opanga ambiri amakhala ndi mantha chifukwa sadziwa kugwiritsa ntchitoinductor. Nthawi zambiri, monga mphaka wa Schrodinger: pokhapokha mutatsegula bokosilo, mungadziwe ngati mphaka wamwalira kapena ayi. Pokhapokha pamene inductor imagulitsidwa ndikugwiritsidwa ntchito m'deralo tingadziwe ngati ikugwiritsidwa ntchito molondola kapena ayi.

Chifukwa chiyani inductor ndi yovuta kwambiri? Chifukwa inductance imakhudza gawo lamagetsi, ndipo chiphunzitso choyenera cha gawo lamagetsi ndi kusintha pakati pa maginito ndi minda yamagetsi nthawi zambiri zimakhala zovuta kumvetsetsa. Sitidzakambirana za mfundo ya inductance, lamulo la Lenz, lamulo lamanja lamanja, ndi zina zotero. Ndipotu, ponena za inductor, zomwe tiyenera kuziganizira ndizomwe zimakhala zofunikira kwambiri za inductor : inductance value, oveteredwa panopa, ma frequency a resonant, khalidwe lapamwamba. (Q mtengo).

Ponena za mtengo wa inductance, ndizosavuta kuti aliyense amvetsetse kuti chinthu choyamba chomwe timalabadira ndi "mtengo wa inductance". Chofunikira ndikumvetsetsa zomwe mtengo wa inductance umayimira. Kodi mtengo wa inductance umayimira chiyani? Mtengo wa inductance umayimira kuti mtengo wokulirapo, mphamvu zambiri zomwe inductance imatha kusunga.

Ndiye tiyenera kuganizira ntchito ya mtengo waukulu kapena wochepa wa inductance ndi mphamvu zambiri zomwe zimasunga. Pamene mtengo wa inductance uyenera kukhala waukulu, ndipo mtengo wa inductance uyenera kukhala wochepa.

Panthawi imodzimodziyo, titatha kumvetsetsa lingaliro la mtengo wa inductance ndikuphatikizana ndi ndondomeko ya chiphunzitso cha inductance, tikhoza kumvetsa zomwe zimakhudza mtengo wa inductance pakupanga inductor ndi momwe mungawonjezere kapena kuchepetsa.

Mawonekedwe apano amakhalanso ophweka, monga kukana, chifukwa inductor imagwirizanitsidwa mndandanda mu dera, mosakayikira idzayenda panopa. Mtengo wovomerezeka ndi wovotera.

Mafupipafupi a resonant sizovuta kumvetsetsa. Inductor yomwe imagwiritsidwa ntchito pochita siyenera kukhala gawo loyenera. Idzakhala ndi mphamvu yofanana, kukana kofanana ndi magawo ena.

Ma frequency a resonant amatanthawuza kuti pansipa pafupipafupi izi, mawonekedwe akuthupi a inductor amakhalabe ngati inductor, ndipo pamwamba pa ma frequency awa, sakhalanso ngati inductor.

Chinthu chamtengo wapatali (Q mtengo) ndichosokoneza kwambiri. Ndipotu, khalidwe labwino limatanthawuza chiŵerengero cha mphamvu yosungidwa ndi inductor ku kutaya mphamvu chifukwa cha inductor mu kayendedwe ka chizindikiro pamtundu wina wa chizindikiro.

Tiyenera kuzindikira apa kuti chinthu chamtengo wapatali chimapezeka pafupipafupi. Chifukwa chake tikamanena kuti mtengo wa Q wa inductor ndiwokwera, zikutanthauza kuti ndiwokwera kuposa mtengo wa Q wa ma inductors ena pa frequency inayake kapena band inayake.

Mvetsetsani mfundozi ndipo muziwagwiritsa ntchito.

Ma inductors nthawi zambiri amagawidwa m'magulu atatu: ma inductors amphamvu, ma inductors apamwamba kwambiri ndi ma inductors wamba.

Choyamba, tiyeni tikambiraneinductor mphamvu.
Power inductor imagwiritsidwa ntchito pozungulira magetsi. Pakati pa ma inductors amphamvu, chinthu chofunikira kwambiri chomwe muyenera kulabadira ndi mtengo wa inductance komanso mtengo wapano. Kuchuluka kwa resonance ndi khalidwe labwino nthawi zambiri siziyenera kukhudzidwa kwambiri.

Chifukwa chiyani? Chifukwamagetsi inductorsNthawi zambiri amagwiritsidwa ntchito m'malo otsika pafupipafupi komanso apamwamba kwambiri. Kumbukirani kuti kusintha pafupipafupi kwa gawo lamagetsi pagawo lolimbikitsa kapena gawo la buck ndi chiyani? Kodi ndi mazana ochepa K, ndipo kusinthasintha kwachangu kumangokhala ochepa M. Nthawi zambiri, mtengo uwu ndi wotsika kwambiri kuposa ma frequency odzipangira okha a inductor yamagetsi. Chifukwa chake sitiyenera kusamala za ma frequency a resonant.

Momwemonso, mumagetsi osinthira mphamvu, kutulutsa komaliza ndi DC komweko, ndipo gawo la AC limawerengera pang'ono.

Mwachitsanzo, kutulutsa mphamvu kwa 1W BUCK, gawo la DC limakhala ndi 85%, 0.85W, ndipo gawo la AC limawerengera 15%, 0.15W. Tiyerekeze kuti khalidwe la Q la mphamvu yamagetsi yogwiritsidwa ntchito ndi 10, chifukwa molingana ndi tanthawuzo la khalidwe la inductor, ndilo chiŵerengero cha mphamvu yosungidwa ndi inductor ku mphamvu yogwiritsidwa ntchito ndi inductor. Inductance iyenera kusunga mphamvu, koma gawo la DC silingagwire ntchito. Chigawo cha AC chokha chingathe kugwira ntchito. Ndiye kutayika kwa AC chifukwa cha inductor iyi ndi 0.015W yokha, yowerengera 1.5% ya mphamvu yonse. Chifukwa mtengo wa Q wopangira mphamvu ndi wokulirapo kuposa 10, nthawi zambiri sitisamala za chizindikirochi.

Tiye tikambiranehigh-frequency inductor.
High-frequency inductors amagwiritsidwa ntchito pamayendedwe apamwamba kwambiri. M'mabwalo othamanga kwambiri, zamakono nthawi zambiri zimakhala zazing'ono, koma mafupipafupi omwe amafunikira amakhala okwera kwambiri. Chifukwa chake, zizindikiro zazikulu za inductor zimakhala pafupipafupi komanso mawonekedwe abwino.

Ma resonant frequency and quality factor ndi mawonekedwe okhudzana kwambiri ndi pafupipafupi, ndipo nthawi zambiri pamakhala mawonekedwe opindika omwe amafanana nawo.

Chiwerengerochi chiyenera kumveka. Muyenera kudziwa kuti chotsika kwambiri pazithunzi za impedance ya mawonekedwe a resonance frequency point ndi resonance frequency point. Makhalidwe abwino omwe amayenderana ndi ma frequency osiyanasiyana adzapezeka muzithunzi zamtundu wamtundu wa chinthu. Onani ngati ingakwaniritse zosowa za pulogalamu yanu.

Kwa ma inductors wamba, tiyenera kuyang'ana kwambiri mawonekedwe osiyanasiyana ogwiritsira ntchito, kaya amagwiritsidwa ntchito pozungulira magetsi kapena pasefa ya siginecha, kuchuluka kwa ma siginecha, kuchuluka kwamakono, ndi zina zotero. Kwa zochitika zosiyanasiyana, tiyenera kulabadira mawonekedwe awo osiyanasiyana.

Ngati mukufuna, chonde omasuka kulankhulaMingdakuti mumve zambiri.