Mene ne ƙarfin lantarki divider

irin ƙarfin lantarki rantsuwa, ana amfani da ko'ina a Electronics saboda sun ba da damar da mafi kyau duka hanyar warware matsalar da irin ƙarfin lantarki tsari. Akwai daban-daban Schematic mafita daga cikin sauki, kamar wasu bango hasken wuta, to isasshe hadaddun matsayin don matsawa iko allon normalizers windings na mains ƙarfin lantarki.

Mene ne ƙarfin lantarki divider? Halitta sauki - shi ne mai na'urar cewa, dangane da watsa rabo (kaga dabam) iko da fitarwa ƙarfin lantarki dangi zuwa shigar.

Tun da farko a cikin Stores sau da yawa za ka iya samun fitilar, bango fitilar, tsara don biyu fitilu. Its musamman alama ne cewa fitilu kansu an tsara su don aiki tare da wani irin ƙarfin lantarki na 127 volts. A gaba dayan tsarin da aka haɗa a gidan ikon soket da 220 da kuma shi aiki nasara. Babu mu'ujizai! The abu ne cewa, da hanyar da a haɗa conductors kafa kõme ba, fãce kamar yadda wani irin ƙarfin lantarki divider. Bari mu tuna da asali lantarki ka'idar, wato, a layi daya da serial dangane da amfani da. Kamar yadda aka sani, a bi da bi yanayin sharuddan sauyawa amperage daidai, da kuma irin ƙarfin lantarki canji (yi tunani Ohm da dokar ta). Saboda haka, a cikin misali da wannan irin fitilar kwan fitila suna da alaka a jerin, wanda ya ba da raguwa a cikin wadata da irin ƙarfin lantarki zuwa biyu sau (110). Har ila yau, da irin ƙarfin lantarki divider za a iya samu a cikin na'ura, gudamawar da sigina daga daya eriya zuwa mahara talabijin. A gaskiya ma, mutane da yawa misalai.

Bari mu duba wani sauki ƙarfin lantarki divider a kan tushen da biyu resistors R1 da R2. Resistance alaka a jerin kan samuwar karshe kawota shigar da ƙarfin lantarki U. Daga tsakiyar batu na shugaba a haɗa da resistors, akwai wani ƙarin fitarwa. Wannan shi ne, shi dai uku iyakar, biyu - suna waje tashoshi (tsakanin total darajar da irin ƙarfin lantarki U) da kuma talakawan kafa U1 da U2.

A lissafi na ƙarfin lantarki divider, ta amfani Ohm ta dokar. Tun lokacin da na = U / R, U ne samfurin na yanzu a kan juriya. Haka kuma, yankin R1 tare da irin ƙarfin lantarki ne U1, yayin da R2 zama U2. A halin yanzu shi ne sa'an nan daidai (serial connection). Ganin dokar ga cikakken sarkar, mun ga cewa da wadata ne Naira Miliyan Xari U U1 + U2.

Mene ne halin yanzu a karkashin wadannan yanayi? Generalizing da lissafi, za mu samu:

I = U / (R1 + R2).

Daga wannan za mu iya sanin darajar da irin ƙarfin lantarki (U fita) a fitarwa na divider (wannan na iya zama duka U1, kuma U2):

U mafita = U * R2 / (R1 + R2).

Domin yin rantsuwa da daidaitacce resistances akwai wasu muhimman siffofin da dole ne a yi la'akari a mataki na yarjejeniya, da kuma a aiki.

Da farko, wadannan mafita ba za a iya amfani da su daidaita irin ƙarfin lantarki na iko da masu amfani. Alal misali, a cikin wannan hanya ba shi yiwuwa iko da wutar lantarki motor. Daya daga cikin dalilan - shi ne resistor halayya da kansu. Resistance kilowatts idan sun wanzu, ne m na'urorin dissipating part m makamashi a matsayin zafi.

Da alaka kaya juriya darajar kada ta kasance kasa da lantarki juriya na circuitry na divider, in ba haka ba bukatar recalculate dukan tsarin. Fi dacewa da bambanci divider R kuma R kaya ya zama a matsayin babban matsayin yiwu. Yana da muhimmanci a daidai zabi dabi'u na R1 da R2, tun wuce kima ƙungiyõyi ya kunsa wuce kima ƙarfin lantarki drop, kuma zai overheat ma low, wasting makamashi ta dumama.

Kirgawa divider yawanci zaba darajar halin yanzu da lokaci (msl, 10) ne mafi girma daga cikin alaka kaya amperage. Bugu da ari, sanin halin yanzu da kuma irin ƙarfin lantarki, da hada juriya da aka lasafta (R1 + R2). Bugu da ari allunan gaba zaba misali dabi'u R1 da R2 (a cikin ra'ayi na su ikon handling damar kauce wa wuce kima dumama).