A zamanin yau, PLC na iya karɓar alamu da siginar firikwensin ba tare da amplifier ba, don haka menene nishaɗar "tushe" da "magudana"? Kawai fitowar PLC kawai zai sami dabarun "tushen" da "lalacewa".

A zahiri, ban da ga gilashin Japanesese na Jafananci, ba lallai ba ne ga wasu plcs don amfani da taƙaitaccen samfurori kamar "magudana" da "magudana" da NPN kai tsaye.

Pnp layin ɗan jama'a ne, kuma NPN shine babban layin jama'a. Muddin wannan haɗin daidai ne, da alama ba matsala idan tsinkayen "tushe" da "magudana" an juya su. Koyaya, wani ra'ayi "tabbatacce dabaru da mummunan dabaru" shima ba daidai ba ne, wanda zai sa siginar da za a juya.

Tabbatacce dabaru da mara kyau

A cikin nau'in da'irar PNP, tashar gama gari ta wadataccen wutar lantarki da siginar ta gama gari tana kan ƙaramin matakin 0V. Lokacin da shigarwar take a matakin karancin mataki, babu bambanci da wutar lantarki tare da tashar gama gari, don haka babu isasshen fitarwa na sigina (adadi na dijital yana 0). Sai kawai lokacin da shigarwar take a babban mataki, akwai bambanci na wutar lantarki tare da tashar gama gari da siginar sauya siginar saiti ne a babban matakin. Wannan yanayin dijital (adadi na dijital shine 1) wanda ke da tasiri lokacin da siginar ke da babban matsayi ana kiranta PNP tabbatacce dabaru.

A cikin kewayawa na NPN, kalmar gama gari na wutar lantarki kuma siginar tana kan babban matsayi (halayen wannan da'irar wannan replifier). Lokacin da shigarwar take a babban matakin, babu bambanci tsakanin shigarwar da fitarwa, don haka babu wani fitarwa na sigina (adadi dijital ne 0). Sai lokacin da shigarwar take a wani karamin matakin (forming wani farin ciki), akwai wani siginar siginar siginar, wanda ake kira mahaɗan dijital.