1. Insimbi engagqwali
2. Abane bangene noyedwa ngaphandle
3. Kungaxhunywa izinzwa ezifika kwezine
4. Ukubukeka okuhle, okuqinile, ukubekwa uphawu okuhle
5. Nge-potentiometer
Ibhokisi lokuhlangana lensimbi engagqwali eline-potentiometer JB-054S, elingaxhunywa kuzinzwa ezine Ibhokisi lokuhlangana elincane Ngenxa yomehluko wezinto ezibalulekile, ubunzima nomzimba wenzwa kanye nenqubo yokukhiqiza, imingcele yenzwa ngayinye ayihambisani, ikakhulukazi ngoba lokuzwela.Lokhu kungahambisani yilokho okuvame ukubizwa ngokuthi umehluko wama-engeli.Ngenxa yalesi sizathu, igama le-junction box lihilelekile, okungukuthi, isignali yokuphuma kwenzwa ixhunywe ebhokisini lokuhlangana kuqala, bese ithunyelwa ensimbi, elungiswa ngokulungisa i-potentiometer ngaphakathi kwebhokisi lokuhlangana.Umehluko we-engeli, ukuze ukuzwela kwenzwa ngayinye kusondele okufanayo, ukuze kuqinisekiswe ibhalansi yawo wonke umzimba wesikali.