Ubuninzi kunye nomgangatho we SCR unokugwetywa nge-multimeter yesikhombisi okanye nge-multimeter yedijithali. IYunnan Changhui Instrument Manufacturing Co., Ltd. yazisa ngokwahlukeneyo ukusetyenziswa kwezi milimitha zimbini kwinkqubo yokulinganisa ubungakanani kunye nomgangatho weSCR.

1. Sebenzisa i-multimeter yesikhombisi ukujonga ubungakanani kunye nomgangatho we-SCR

Ngokomgaqo wokudibana kwePN, ukumelana phakathi kweepali ezintathu ze-thyristor kunokulinganiswa nge-ohmic block “R × 10” okanye “R × 100” block ukugweba ukuba kulungile okanye kubi. Kukho ukudibana kwe-PN phakathi kwe-electrode yolawulo kunye ne-cathode K ye-thyristor. Phantsi kweemeko eziqhelekileyo, ukuxhathisa kwayo kuphakathi kwamashumi e-ohms ukuya kumakhulu ee-ohms, kwaye ukuxhathisa okuphikisayo ngokubanzi kukhulu kunokumelana nokuhamba phambili. Ngamanye amaxesha ukuxhathisa umva kokulinganisa kwepali yolawulo kuncinci, oko akuthethi ukuba ipali yokulawula ineempawu ezimbi. Kuxhomekeka ikakhulu ekubeni iyahlangabezana neempawu zesiphambuka sePN.

2. Sebenzisa i-multimeter yedijithali ukujonga ubungakanani kunye nomgangatho we-SCR

Gweba i-electrode yedijithali yemultimeter ye-thyristor kwibloko ye-diode, qhagamshela uvavanyo olubomvu olukhokelela kwi-electrode enye, kunye novavanyo olumnyama olukhokelela ekunxibelelaneni nezinye i-electrode ezimbini ngokwahlukeneyo. Ukuba enye yazo ibonisa ukuba umbane zizishumi ezimbalwa ze-volt, emva koko uvavanyo olubomvu lukhokelwe kulawulo lwe-electrode G, uvavanyo olumnyama luqhagamshelwe kwi-cathode K, kwaye enye i-anode A. ukuba ibonisa ukugcwala omabini la maxesha, oko kuthetha ukuba uvavanyo olubomvu olukhokelayo aluxhunyiwe kwi-electrode yolawulo, kwaye i-electrode kufuneka ithathelwe indawo iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde isetyenziswe kwakhona.

Ukuvavanya amandla okubangela i-thyristor, i-multimeter yedijithali isetelwe kwibhloko ye-PNP. Ngeli xesha, imingxunya emibini ye-E kwisokethi ye-hFE ihlawuliswe ngokuqinisekileyo, kwaye umngxunya we-C uhlawuliswe kakubi, kwaye i-voltage yi-2.8V. Ii-electrode ezintathu ze-thyristor zikhokelwa ngaphandle ngocingo, i-anode A kunye ne-cathode K ekhokelayo ifakwe kwimingxunya E no-C ngokwahlukeneyo, kwaye ulawulo lwe-electrode G lurhoxisiwe. Ngeli xesha, i-thyristor icinyiwe, i-anode yangoku ingu-zero, kwaye i-000 iya kuboniswa.

Faka ipali yolawulo G kwenye i-E hole. Ixabiso elibonisiweyo liya kunyuka ngokukhawuleza ukusuka kwi-000 kude kube luphawu lokugcwala lubonakalisiwe, kwaye kwangoko utshintshe uye kwi-000, emva koko utshintshe ukusuka kwi-000 ukuya kuphuphuma kwakhona, njalo njalo. Le ndlela ingasetyenziselwa ukumisela ukuba ngaba ukwenziwa kwe-thyristor kunokuthenjwa. Nangona kunjalo, ixesha lokuvavanya kufuneka lifinyezwe kangangoko kunokwenzeka ngenxa yangoku enkulu kakhulu kuvavanyo olunjalo. Ukuba kukho imfuneko, isinxibelelanisi sokuxhathisa samakhulu ali-ohms sinokudityaniswa kuthotho kwi-anode ye-SCR.

Ukuba ibhloko ye-NPN isetyenzisiwe, i-anode A ye-thyristor kufuneka iqhagamshelwe kumngxunya C, kunye ne-cathode K ukuya emngxunyeni u-E ukuqinisekisa ukuba umbane osetyenziswayo ngaphambili. Xa ujonga amandla okubangela, sukufaka i-electrode yolawulo kumngxunya we-B, kuba ivolthi yombobo we-B iphantsi, kwaye i-SCR ayinakuvulwa.