1. Ukwethulwa kafushane kwama-relay

A udluliseyi-idivayisi yokulawula kagesiokwenza uguquko olunqunywe kusengaphambili lwesinyathelo senani elilawulwayo kumjikelezo wokuphuma kukagesi lapho inani lokokufaka (i-excitation quantity) lishintshwa ukuze lihlangabezane nezimfuneko ezishiwo. Inobudlelwano obusebenzisanayo phakathi kwesistimu yokulawula (ebuye ibizwe ngokuthi i-input circuit) kanye nesistimu elawulwayo (ebizwa nangokuthi i-output circuit). Ngokuvamile esetshenziswa kuma-circuits okulawula okuzenzakalelayo, empeleni "i-automatic switch" esebenzisa i-current encane ukulawula ukusebenza kwamandla amakhulu. Ngakho-ke, idlala indima yokulawula okuzenzakalelayo, ukuvikelwa kokuphepha kanye nesifunda sokuguqulwa kumjikelezo.

2. Indima eyinhloko yama-relay

I-Relay iyisici sokushintsha okuzenzakalelayo esinomsebenzi wokuzihlukanisa, lapho ukuguqulwa kwenjabulo kumjikelezo wokufakwayo kufinyelela inani elishiwo, kungenza umjikelezo ophumayo wamandla alawulwayo ushintshe isinyathelo esinqunyiwe kudivayisi yokulawula isifunda esizenzakalelayo. Inendlela yokuzwa yokusabela ekuvusweni kwangaphandle (okukagesi noma okungezona ugesi), i-actuator yokulawula "ukuvula" kanye "nokucisha" kwesekethe elawulwayo, kanye nendlela yokuqhathanisa emaphakathi yokuqhathanisa, ukwahlulela nokuguqula ubukhulu besasasa. Ama-relay asetshenziswa kakhulu ku-remote control, telemetry, ukuxhumana, ukulawula okuzenzakalelayo, i-mechatronics, nobuchwepheshe be-aerospace ukuze ulawule, uvikele, ulawule, futhi udlulise ulwazi.

Ama-relay ngokuvamile anendlela yokungenisa (ingxenye yokokufaka) ebonisa okuguquguqukayo okuthile (njengamanje, i-voltage, amandla, i-impedance, imvamisa, izinga lokushisa, ingcindezi, isivinini, ukukhanya, njll.); i-actuator (ingxenye yokuphumayo) elawula isekethe elawulwayo “evuliwe” futhi “ivaliwe”; kanye nendlela emaphakathi (ingxenye yedrayivu) ebhangqa futhi ihlukanise inani lokufakwayo, icubungule umsebenzi futhi ishayele ingxenye yokukhiphayo phakathi kokokufaka nokukhiphayo. Phakathi kwezingxenye zokufaka nokukhiphayo ze-relay, kukhona indlela emaphakathi (ingxenye yedrayivu) ebhangqa futhi ihlukanise okokufaka, icubungule umsebenzi futhi ishayele okukhiphayo.

Njengesici sokulawula, i-relay inezindima ezimbalwa.

(1) Ukunweba ububanzi bokulawula: Isibonelo, isignali yokulawula ukudluliselwa koxhumana nabo abaningi ifike kunani elithile ingashintshwa, ivulwe futhi ivulwe amasekhethi amaningi ngesikhathi esisodwa ngokuya ngezinhlobo ezihlukene zamaqembu okuxhumana.

(2) Ukukhulisa: Isibonelo, ama-relay azwelayo, ama-relay aphakathi nendawo, njll., ngenani elincane kakhulu lokulawula, ungalawula umjikelezo wamandla aphezulu kakhulu.

(3) Amasignali ahlanganisiwe: Isibonelo, uma amasiginali okulawula amaningi efakwa ku-multi-winding relay ngendlela enqunyiwe, ayaqhathaniswa futhi ahlanganiswe ukuze azuze umphumela wokulawula onqunywe kusengaphambili.

(4) Okuzenzakalelayo, isilawuli kude, ukuqapha: Ngokwesibonelo, amalayidi emishini ezenzakalelayo, kanye nezinye izinto zikagesi, zingakha izintambo zokulawula ezihleliwe, ngaleyo ndlela zivumele ukusebenza okuzenzakalelayo.