Imashini yamashanyarazi ya Knob hamwe no guhindagura imashanyarazi (rimwe na rimwe nanone bita rotary toggle switch na push-buto yo guhinduranya) ni ubwoko bubiri busanzwe bwo guhinduranya muri sisitemu y'amashanyarazi, buri kimwe gifite imiterere yihariye hamwe na ssenariyo ikoreshwa.
Imashini zomuzunguruko zikoresha ikoreshwa ryizunguruka kugirango zigenzure hejuru yumuzingi. Ubu bwoko bwa switch bukoreshwa kenshi mugihe ibintu bigomba kugenzurwa neza, nka sitasiyo yo gukwirakwiza amashanyarazi na laboratoire. Ibyiza bya knob circuit breaker nuko ifite ihinduka ryukuri. Abakoresha barashobora guhindura neza ibizunguruka bazunguruka ipfunwe kugirango barebe imikorere isanzwe yibikoresho hamwe nibisubizo byubushakashatsi. Byongeye kandi, imiyoboro yamashanyarazi izahita igenda mugihe umuzunguruko unaniwe cyangwa uremerewe cyane, uhagarika amashanyarazi kugirango urinde umutekano wibikoresho nabakozi. Biroroshye gukora cyane, ntibisaba abatekinisiye babigize umwuga gukora, kandi bifite igiciro gito. Cyane cyane kubikoresho bimwe byamashanyarazi bito, gukoresha imiyoboro ya knob irashobora kugabanya neza ibiciro. Ariko, mugihe cyihutirwa, umuvuduko wibikorwa bya knob circuit yameneka ntishobora kwihuta nkibisunika-buto byumuzunguruko.
Guhindura inzitizi zumuzingi (gusunika-buto ubwoko) ihindura imiterere yumuzingi ukanda buto. Ubu bwoko bwa switch busanzwe bukoreshwa mugucunga amashanyarazi mato na voltage, nka switch n'amatara yerekana ibikoresho bya elegitoroniki. Ibyiza byo gusunika-bouton yamashanyarazi ni uko byoroshye gukora no gusubiza byihuse, bigatuma bikwiranye cyane na ssenariyo aho ingufu zigomba guhagarikwa vuba, nka buto yo guhagarika byihutirwa kumurongo wibyakozwe hamwe na sisitemu yo guhuza umuriro ahantu hahurira abantu benshi. Muri ibi bihe, igihe nubuzima, kandi gusunika-buto kumashanyarazi bishobora guhagarika ingufu vuba kandi bikagabanya ingaruka zishobora kubaho. Mubyongeyeho, gusunika-buto kumuzunguruko kumeneka mubisanzwe bifite ibimenyetso byerekana neza, nkumutuku wo gutandukana nicyatsi kibihuza, bigatuma byoroha kubakoresha kumenya vuba imiterere ihari.
Kubijyanye nuburyo bwo kumena inzitizi nibyiza, mubyukuri biterwa nibisabwa byihariye nibikenewe. Imashini yumuzunguruko ya Knob ikora neza muribintu aho bisabwa kugenzura neza ingano yubunini hamwe noguhindura neza, mugihe icyuma gisunika-buto cyumuzunguruko cyiza cyane mugihe ibintu bigomba gukemurwa vuba kandi hakenewe ibikorwa byihutirwa. Kubwibyo, mugihe uhisemo icyuma kizunguruka, abakoresha bagomba gutekereza cyane bashingiye kubikenewe hamwe nibidukikije.
Muri rusange, imiyoboro yo mu bwoko bwa knob yameneka hamwe noguhindura ubwoko bwumuzunguruko buriwese afite ibyiza byihariye hamwe nibishobora gukoreshwa. Mugihe cyo gutegura no guhitamo sisitemu y'amashanyarazi, ubwoko bukwiye bwo kumena amashanyarazi bugomba gutoranywa ukurikije uko ibintu bimeze kugirango harebwe imikorere yumutekano kandi ihamye ya sisitemu yingufu. Muri icyo gihe, uko ubwoko bwamashanyarazi bwatoranijwe bwatoranijwe, ubwiza bwarwo nibikorwa bigomba kuba byujuje ubuziranenge nibisabwa.
