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Chifukwa Chiyani Kuwonetsera kwa LED Kuyenera Kukhazikitsidwa?

Zigawo zazikulu zam'nyumba zowonetsera za LEDndimawonekedwe akunja a LEDndi ma LED ndi ma driver tchipisi, omwe ali m'gulu lazinthu zamagetsi zamagetsi.Magetsi opangira ma LED ndi pafupifupi 5V, ndipo magwiridwe antchito ambiri ndi ochepera 20 mA.Mawonekedwe ake ogwirira ntchito amatsimikizira kuti imakhala pachiwopsezo chamagetsi osasunthika komanso ma voltage abnormal kapena kugwedezeka kwapano.Chifukwa chake, opanga zowonetsera za LED ayenera kuchitapo kanthu kuti ateteze chiwonetsero cha LED panthawi yopanga ndikugwiritsa ntchito.Kuyika kwamagetsi ndiye njira yodzitetezera yomwe imagwiritsidwa ntchito kwambiri pazowonetsa zosiyanasiyana za LED.

Chifukwa chiyani magetsi azimitsidwa?Izi zikugwirizana ndi njira yogwirira ntchito yosinthira magetsi.Magetsi athu owonetsera ma LED ndi chipangizo chomwe chimasintha ma mains a AC 220V kukhala magetsi okhazikika a DC 5V DC kudzera m'njira zingapo monga kusefa-kuwongolera-kuwongolera-kutulutsa-sefa.

Pofuna kuonetsetsa kukhazikika kwa kutembenuka kwa AC/DC kwa magetsi, wopanga magetsi amalumikiza dera la EMI fyuluta kuchokera ku waya wamoyo kupita ku waya pansi pamapangidwe amagetsi a AC 220V malinga ndi dziko lovomerezeka la 3C. muyezo.Pofuna kuonetsetsa kukhazikika kwa kulowetsa kwa AC 220V, magetsi onse azikhala ndi kutayikira kwa fyuluta panthawi yogwira ntchito, ndipo kutayikira kwa magetsi amodzi kumakhala pafupifupi 3.5mA.Mphamvu yamagetsi yamagetsi ndi pafupifupi 110V.

Ngati chiwonetsero cha LED sichinakhazikike, kutayikira kwapano sikungoyambitsa kuwonongeka kwa chip kapena kuyatsa kwa nyali.Ngati magetsi opitilira 20 agwiritsidwa ntchito, kutayikira komwe kumasokonekera kumafika kupitilira 70mA.Ndikokwanira kupangitsa woteteza kutayikira kuchitapo kanthu ndikudula magetsi.Ichi ndichifukwa chake chophimba chathu chowonetsera sichingagwiritse ntchito chitetezo chotayikira.

Ngati chitetezo chotuluka sichikulumikizidwa ndipo chinsalu chowonetsera cha LED sichinakhazikitsidwe, kutayikira komwe kumayendetsedwa ndi magetsi kumadutsa mphamvu yotetezeka ya thupi la munthu, ndipo mphamvu ya 110V ndi yokwanira kupha imfa!Pambuyo pokhazikika, mphamvu yamagetsi yamagetsi imakhala pafupi ndi 0 ku thupi la munthu.Zimasonyeza kuti palibe kusiyana komwe kungatheke pakati pa mphamvu ndi thupi la munthu, ndipo kutayikira kwa madzi kumatsogolera pansi.Chifukwa chake, chiwonetsero cha LED chiyenera kukhazikitsidwa.

led cabinet

Kotero, kodi maziko okhazikika ayenera kuwoneka bwanji?Pali materminal 3 kumapeto kwa magetsi, omwe ndi mawaya amoyo, mawaya osalowererapo komanso poyambira pansi.Njira yoyenera yoyatsira ndikugwiritsira ntchito waya wapadera wachikasu wobiriwira wamitundu iwiri poyika pansi kuti alumikizitse ma terminals onse amagetsi motsatizana ndi kuwatsekera, kenako kupita nawo poyambira pansi.

Tikakhazikika, kukana kwapansi kuyenera kukhala kosakwana 4 ohms kuwonetsetsa kuti kutayikira kwanthawi yake kumatuluka.Zindikirani kuti malo oteteza mphezi akatulutsa mphezi, zimatenga nthawi chifukwa cha kufalikira kwa nthaka, ndipo mphamvu ya pansi idzawuka pakanthawi kochepa.Ngati kuyatsa kwa chinsalu chowonetsera cha LED kulumikizidwa ndi chotchinga chachitetezo cha mphezi, ndiye kuti kuthekera kwapansi Kukwera kuposa chophimba chowonetsera, mphezi yamagetsi idzaperekedwa ku thupi lachinsalu pamodzi ndi waya pansi, kuwononga zida.Chifukwa chake, kuyatsa kotetezedwa kwa chiwonetsero cha LED sikulumikizidwa ndi malo otchingira mphezi, ndipo malo otetezedwa ayenera kukhala opitilira 20 metres kuchokera pamalo otchingira mphezi.Pewani kuukira komwe kungachitike pansi.

Chidule cha malingaliro a maziko a LED:

1. Mphamvu iliyonse yamagetsi iyenera kukhazikitsidwa kuchokera pansi ndikutsekedwa.

2. Kukana kwapansi sikungakhale kwakukulu kuposa 4Ω.

3. Waya wapansi uyenera kukhala waya wokhawokha, ndipo ndizoletsedwa kugwirizanitsa ndi waya wosalowerera.

4. Palibe chowotcha mpweya kapena fusesi yomwe idzayikidwe pansi pa waya.

5. Mawaya apansi ndi poyambira pansi azikhala opitilira 20 kuchokera pamalo otchingira mphezi.

Ndi zoletsedwa kuti zida zina zigwiritse ntchito poziteteza m'malo mwa ziro zoteteza, zomwe zimapangitsa kulumikizana kosakanikirana kwa maziko oteteza ndi ziro zoteteza.Pamene kusungunula kwa chipangizo chotetezera pansi kumawonongeka ndipo mzere wa gawo umakhudza chipolopolo, mzere wosalowerera udzakhala ndi magetsi pansi, kotero kuti voteji yoopsa idzapangidwira pa chipolopolo cha chipangizo chotetezera pansi.

Choncho, pamzere woyendetsedwa ndi basi yomweyi, malo otetezera ndi chitetezo cha zero sichingasakanizidwe, ndiko kuti, gawo limodzi la zipangizo zamagetsi silingagwirizane ndi zero ndipo gawo lina la zipangizo zamagetsi zimakhazikitsidwa.Nthawi zambiri, mains amalumikizidwa ndi chitetezo cha zero, kotero zida zamagetsi zomwe zimagwiritsa ntchito mains ziyenera kulumikizidwa ndi chitetezo cha zero.

 


Nthawi yotumiza: Jul-11-2022

Siyani Uthenga Wanu