Ibimenyetso vy’uko umurongo w’intango udakora neza ni nk’uko moteri y’intango idahindukira mu gihe co gutangura; umuvuduko wa moteri y’intango uri hasi cane kuruta uko bisanzwe canke mbere ugahagarara mu gihe co gutangura; kandi ni moteri y’ugutangura gusa izunguruka ningoga mu gihe umugozi wa moteri udahindukira inyuma y’aho umuriro w’ugutangura ufunguriwe.
Relay ni igikoresho co kugenzura umuyagankuba gitera ihinduka ry’intambwe ryategekanijwe imbere y’igihe mu rugero rugenzurwa mu nzira y’isohoka ry’umuyagankuba iyo ihinduka ry’urugero rwinjizwa (urugero rw’ugukangura) rushitse ku bisabwa vyemewe. Ifise isano hagati y’uburyo bwo kugenzura (buzwi kandi nk’umurongo w’injiza) n’uburyo bugenzurwa (buzwi kandi nk’umurongo w’isohoka). Ikoreshwa cane mu mirongo y'ubugenzuzi bw'ivyuma kandi mu vy'ukuri ni "switch yikoresha" ikoresha umuriro mutoyi kugira ngo igenzure umuriro munini. Ku bw’ivyo, irafise uruhara mu guhindura ibintu ubwavyo, mu gukingira umutekano, no mu guhindura umurongo mu murongo.
1. Relay ahanini ikora nk’umuyagankuba, ikoreshwa mu mirongo y’ubugenzuzi.
2. Imbere muri relay hariho ama contacts yugaye kandi yuguruye n’ama contacts abiri y’ama coil. Ivyo akenshi bishirwako ikimenyetso ku gipfukisho. Iyo iyo coil ifise inguvu, ama contacts asanzwe yugarijwe arafunguka mu buryo busanzwe, kandi ama contacts asanzwe yuguruye agaca yuguruka mu buryo busanzwe. Igikoresho gisanzwe kandi gikoreshwa cane ni mu bimenyetso vy’uguhindukira vy’imodoka. Canke vyoshobora kuba ari amashanyarazi atanga umuyagankuba ku nzira y’ubugenzuzi, nk’igikoresho co gutanga inkengeri.
3. Kugira umenye nimba ari vyiza canke bibi, ushobora gukoresha gusa umurongo w’uburemere n’umurongo w’ububandanya bwa diode ku multimètre. Ku bimenyetso bisanzwe vyuguruye, iyo coil itegerezwa guhabwa inguvu imbere y’uko ipimwa. Igihe upima munsi y’umuzigo, ukoreshe ivyerekeye umuriro; iyo iriko irakora, nta n’umuriro uriho. Ama contacts asanzwe yugaye apimwa mu bihe bisanzwe. Ushobora gukoresha canke umurongo w’umuriro (ku bipimo vy’ubuzima) canke umurongo w’ububandanya. Biragaragara ko iyo coil ari nziza; iyo ikorana, ni vyiza. Canke, ushobora gukoresha uburyo bwo gukomeza diode canke uburyo bwo guhangana kugira ngo upime.
