Aan aragno sida aan u xisaabiso resistors for LED

Xisaabinta resistors for Kokes - taasi waa hawlgal ah oo aad u muhiim ah in Waa in la fuliyo ka hor inta aadan ku xidha LED in il awoodeed ah. Tani waxay go'aamin doona waxqabadka labada diode iyo Bannaankii oo dhan. resistor waa in lagu daro Bannaanka ee taxanahan la LED ah. element waxaa loogu tala galay in la xadido hadda ku dhex maraya diode ah. Haddii resistor uu leeyahay iska caabin ah oo ku magacaaban hoose ka badan loo baahan yahay, ka dibna LED wey (gubi soo baxay), iyo haddii qiimaha dhimaya tani waxay noqon doontaa ka badan lagama maarmaan, iftiinka uga element Semiconductor waxay noqon doontaa mid aad u yaraaday.

Xisaabinta resistors for Kokes ku waa in la sameeyey by R soo socda formula = (US - EL) / aan, halkaas oo:

• US - danab siin;
• EL - danab xoog diode (caadi ahaan 2 volts iyo 4);
• I - hadda diode ah.

U hubso in la hubiyo in qiimaha la doortay ee hadda korontada waa yar yahay qiimaha ugu badan ee hadda ee element Semiconductor ah. Ka hor inta Socota xisaabinta, waa inaad dhigay qiimaha this ee amps. Sida caadiga ah waa in ay xogta baasaboorka lagu qeexay milliamps. Sidaas darteed, ay sabab u tahay xisaabinta loo helo qiimaha ee iska caabin ah ku magacaaban ee resistor ah ee ohms. Haddii qiimaha ka dhalanaya isla resistor caadiga ah ma noqon doonto, waa in aad doorato heshaan ugu dhow weyn. Ama waxaa suurtagal ah in ay ku xidhmaan ee taxanahan dhowr cunsur iska caabin magacaaban yar yar si ay wadarta uyeelaysaan kuwo iska caabin ah bartilmaameedka.

Tusaale ahaan, tani waa sida aan u xisaabiso resistors for Kokes. Ina keena aynu ka fikirno in aan sahayda xoog leh danab saarka of 12 volts ah, iyo LED ah (EL = 4 V). hadda loo baahan yahay waa 20 MA. Waxaan u turjumo si aad u hesho 0.02 amps iyo A. Waxaan hadda sii wadi karo in xisaabinta of R = (12 - 4) / 0.02 = 400 ohms.

Haddaba ka fiirsada sida xisaabinta Waa in la fuliyo ee la xiriira taxanaha ah ee hannaanka ka mid ah xubno ka Semiconductor ah. Tani waa run gaar ahaan marka la shaqeeyo strips LED. xiriir taxanaha hoos u dhigta isticmaalka xoogga iyo u saamaxaaya in ay isku xirmaan tiro badan oo ah xubno ka. Ogow, si kastaba ha ahaatee, in dhammaan Kokes taxane-xiran waa in ay ahaadaan nooca la mid ah, iyo korontada - ku filan oo awood badan. Taasi waa habka ay tahay in loo xisaabiyo resistors for Kokes ku lug taxane. U qaadan in aan silsilad of 3 xubno (danab kasta waa 4 volts) iyo sahayda xoogga 15-volt. Waxaan ogaado danab ku UL. Si taas waa in lagu daro mid kasta oo ka dioska- ku xisaabin 4 + 4 + 4 = 12 volts. Passport LED qiimaha hadda ah 0.02 A, waxaan xisaabiyo R = (15-12) / 0,02 = 150 ohms.

Waxaa muhiim ah in la xasuusto in xidhiidhka ka midka ah ee uu Kokes, si meel dhexaad ah u dhigay, fikrad xun. Waxa ugu waa in xubno waxay leeyihiin kala duwanaanshaha argument, kuwaasoo mid walba uu u baahan voltages kala duwan. Tani waxay keenaysaa in xaqiiqda ah in xisaabinta of Kokes - waa layli Xumo falayaal. Iyada oo xiriir this, element kasta iftiimi doonaa iftiimiyo. Xaaladda la badbaadin karaa oo keliya by resistor a yareysey for diode kasta si gooni gooni ah.

Gebogebadii, waxaan ku dari in sida ay mabda 'waxaa loo xisaabiyaa oo dhan shirka LED oo ay ku jiraan laambadihii la Kokes. Haddii aad rabto in aad is-shirin dhismeedka noocan oo kale ah, u xisaabin xogta idiin ahaan doonaa khuseeya.