A cikin ilimin kula da taurari, wani abu mai yawa na zamanin yaɗa a kan muhimman abubuwa daga cikin zaɓuɓɓuka. Su yi aiki a kan wuraren magana ko kuma masana'antar gida, suna yanayi waɗanda suke da ƙarin bayan ɗaya ko kuma sauransu a kan ƙungiyoyin kontrol. Wannan aiki na zamanin yaɗa yana iya ba ƙungiyoyi daidai zuwa shiga da ƙarin bayan lokacin da aka fara. Daga bincike, zaɓuɓɓukan zamanin yaɗa ana nufin zuwa biyu ne: on-delay da off-delay.
1. On-Delay Time Relay
On-delay time relay ba a tabbatar da jirgin samun shiga bayan samun alamun mafi girma. Amma, ya fara da zama na zamanin da aka faɗa. A lokacin wannan zama, mekanismen da ke tsara zamanin ya fara da tsari, amma babban ƙarfi ya ɗauki. Ba a lokacin da zama an samu ƙarin, ƙarfin babban ya shiga, wanda ya haifar da aiki a kan ƙungiyoyin kontrol. Idan an ci gaba alamun mafi girma, wannan nau'in zaɓuɓɓuka yana ɗauka zuwa hali na farko.
2. Off-Delay Time Relay
Mai kyau da on-delay, off-delay time relay yana tabbatar da jirgin shiga bayan samun alamun mafi girma - ƙarfin babban ya shiga da ƙarin. Amma, idan an ci gaba alamun mafi girma, zaɓuɓɓukan ba a ɗauka bayan. Amma, ya fara da zama na zamanin da aka faɗa a lokacin da ƙarfin babban ta ɗauka da ƙarin bayan lokacin da zama an samu ƙarin.
A lokacin wannan zama, hatta da alamun mafi girma ta ɗauka, ƙarfin babban ta ci ƙarfin da yake ɗauka. Ba a lokacin da zama an samu ƙarin, zaɓuɓɓukan yana ɗauka zuwa hali na farko.
3. Alamar Kula da Nauyoyi
Don in taimaka masu ilimi su duba da kula da kuma furta nauyoyin zaɓuɓɓukan zamanin yaɗa a kan rubututtukan kula, ana amfani da alamun kula masu mahimmanci. Don on-delay time relays, alamar kulan ya shafi hankalin kula na musamman da ke tsohon alamar zaɓuɓɓuka, amma alamar ƙarfin ya shafi sama (=) a hankalin. Don off-delay time relays, alamar kulan ya shafi hankalin kula mai sarrafa, amma alamar ƙarfin ya shafi abuwan sama (==).
4. Tattalin Aiki da Yadda Ake Amfani Da Su
A cikin tattalin aiki, in duba da kula da kuma amfani da zaɓuɓɓukan zamanin yaɗa a hakan yana da muhimmanci ga ƙungiyoyin. On-delay relays suna amfani a cikin yankunan da ake bukata a yi aiki bayan samun alamun mafi girma, kamar ƙarin bayan samun motoci ko kuma tushen ronin karamin ƙarin. Off-delay relays suna da muhimmanci a cikin yankunan da ake bukata ƙarfin babban ta ɗauka bayan samun alamun mafi girma, kamar ƙarin bayan samun babban dukkantaccen lift ko kuma ƙarin bayan samun ayyukan ƙananan ƙasa.
5. Muhimmiyar Bayanai
A cikin ƙarin bayanai, zaɓuɓɓukan zamanin yaɗa suna da muhimmanci mai zurfi a cikin ƙungiyoyin kontrol, musamman a cikin ƙungiyoyin da ke buƙata tsari mai ma'ana. Ta haka, in samun fahimtar addinin aiki da kuma tattalin aiki na on-delay da off-delay time relays, masu ilimi suke amfani da su don in taimaka ƙungiyoyin da suke buƙata tushen aiki, wanda yana ƙare matsayin daraja da inganci na ƙungiyoyi.