Umkhakha 02
Amasekhethi kagesi
Indlela umsinga kagesi ogeleza ngayo, nendlela yokuwulawula
Amasekhethi kagesi anika amandla izibani, amafoni nezinjini. Lapha ufunda ukuthi yini eyenza umsinga ugeleze nokuthi ungawusebenzisa kanjani ngokuphepha.
Lokho ozokufunda
- Ukuthi ivoltheji, umsinga nokumelana kuyini
- Kungani isekhethi kufanele ixhumeke ngokuphelele ukuze umsinga ugeleze
- Umehluko phakathi kokuxhuma ngochungechunge nokuxhuma ngokuhambisana
- Kungani izingxenye zidinga umsinga ofanele: ungabi mncane kakhulu, ungabi mkhulu kakhulu
Izibonelo zezivivinyo
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Khanyisa i-LED bese ukhetha irezista eyigcina iphephile.
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Xhuma izibani ezimbili ngochungechunge, bese uzixhuma ngokuhambisana, uqhathanise ukukhanya kwazo.
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Engeza iswishi bese uthola ukuthi ungayibeka kuphi ukuze ilawule yonke isekhethi.
Izinto ongazakha
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Ithoshi eneswishi
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Isibani sasebusuku
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I-alamu elula enebhaza
Lezi zibonelo zikhombisa uhlobo lomsebenzi kulo mkhakha. Izifundo ezizoshicilelwa zingahluka.
Zama imodeli encane
Lezi zimodeli ezincane zisebenza lapha esipheqululini sakho, futhi ziqhubeka nokusebenza ngaphandle kwe-inthanethi uma ikhasi selilayishekile. Ziyizimodeli zokufundisa ezenziwe lula, hhayi injini yokulingisa ye-MEKALUMI.
Gcina i-LED iphephile
Khetha ibhethri nerezista, bese uvula iswishi. Uma umsinga umncane kakhulu, i-LED ayikhanyi. Uma umkhulu kakhulu, i-LED yangempela ingasha.
- Umsinga
- 11.4 mA
- I-LED
- Ikhanya ngokuphepha.
Irezista ikhawulela umsinga. Umthetho ka-Ohm ukutshela ukuthi mungakanani: umsinga = (ivoltheji yebhethri − ivoltheji ye-LED) ÷ ukumelana.
Imodeli: ibhethri ephelele; i-LED ebomvu enokwehla kwevoltheji okungaguquki okungu-2 V, ephephile kuze kufike cishe ku-20 mA.
Lokho ukulingisa okukwenza kube lula
- Amabhethri nezintambo kuvame ukuthathwa njengokuphelele, kodwa amabhethri angempela ayaphela futhi izintambo zangempela ziyafudumala.
- Izingxenye ezisekulingiseni ziyafana ncamashi; izingxenye zangempela zihluka kancane enye kwenye.
Konke ukulingisa kwenza okwangempela kube lula. Ukwazi ukuthi kwenza kanjani lokho kuyingxenye yokufunda ubunjiniyela.
Ukuxhumana nezifundo zasesikoleni
Ifiziksi, izibalo (umthetho ka-Ohm), ubuchwepheshe
Ukuxhumana neminye imikhakha
Amasekhethi aholela kulojiki yedijithali, ekuklameni ama-PCB, ekuzenzakaleleni nakwezamarobhothi.
Kuhle ukwazi
Amasekhethi asekulingiseni aphephile ukuwahlola. Ugesi ophuma emasokhethini asodongeni uyingozi: ungalokothi wenze izivivinyo ngawo.