AVT3172B - Mai kula da kawar da hayaki
Duk wanda ya yi soldering a matsayin sha'awa a gida ya san yadda m kuma a lokaci guda hatsari shi ne kai tsaye shaka solder hayaki. Gaskiya ne cewa akwai shirye-shiryen masana'anta da yawa don masu shan hayaki a kasuwa, amma amfani da su sau da yawa yana da wahala. Maganin da aka gabatar yana ba ku damar daidaita saurin fan daidai da buƙatun, godiya ga wanda zaku iya rage yawan hayaniyar da fan mai gudana ke fitarwa.
Tabbas, irin wannan ra'ayi ba zai maye gurbin kullun mai kyau ba, kuma mafi kyawun mafita mafi inganci shine hada fanko tare da bututun iska. Duk da haka, aiwatar da a layi daya tare da yin amfani da carbon tace harsashi da kuma wajibi na yau da kullum samun iska na dakin zai muhimmanci rage hadarin kai tsaye inhalation na solder hayaki. Bugu da ƙari, tsarin da aka gabatar za a iya amfani dashi sau da yawa - alal misali, a cikin kwanakin zafi yana da kyau a matsayin mai son tebur mai daidaitacce.
Bayanin shimfidar wuri
Ana nuna zane-zanen da'irar a cikin fig. 1. Wannan aikace-aikacen gargajiya ne na mai sarrafa ƙarfin lantarki na LM317. Dole ne a yi amfani da na'urar ta hanyar daidaitaccen wutar lantarki na 12V da aka haɗa da mai haɗin IN. Diode D1 yana kare tsarin daga juyar da polarity na ƙarfin shigarwar, kuma capacitors C1-C4 suna tace wannan ƙarfin lantarki. Tare da ƙimar abubuwan da aka nuna a cikin zane, kewayon daidaitawa yana ba ku damar saita kowane irin ƙarfin lantarki a cikin kewayon daga kusan 2 zuwa kusan 11 V a fitarwa, wanda ke tabbatar da saurin sarrafa fan ɗin da aka haɗa zuwa OUT. fita.
Shigarwa da daidaitawa
Haɗin tsarin shine classic kuma bai kamata ya haifar da matsala ba. Bari mu fara da siyar da ƙananan abubuwa a cikin allo, kuma mu ƙare ta hanyar hawan heatsink tare da tsarin U1 da potentiometer. Sanya fanka a ƙarshe ta amfani da gajeriyar tsayin waya mai kauri mai kauri. Ana amfani da jerin ramuka masu hawa tare da bude filin tagulla don wannan dalili. Ana nuna hanyar haɗin fan a cikin hotuna. An daidaita farantin don hawa magoya bayan 120mm da matsakaicin kauri na 38mm. Hanyar shigar da fan shine na zaɓi, ya danganta da buƙatu da nufin amfani da na'urar.
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