Kungani sisasebenzisa amashubhu e-vacuum kuma-amplifier esimanje kagesi?
Ishubhu ye-vacuum, ishubhu ye-electron, i-valve yeshubhu nje ubuchwepheshe obuthuthukiswe ekuqaleni kuka-1900. Injongo yayo eyinhloko kwakuwukufeza imisebenzi eyisisekelo ye-elekthronikhi njengokuqiniswa kwesiginali nokulungiswa kwamanje. Ukusungulwa kwe-transistor, umshini we-semiconductor, ngawo-1940 kwaveza enye indlela engcono, ephephile, encane futhi ephumelela kakhudlwana kuneshubhu ye-vacuum. I-transistor futhi inezinzuzo zokuba ithembeke kakhulu kuneshubhu ye-vacuum. Naphezu kokungakhululeki kwayo, i-tube isathandwa abantu abaningi abathanda umculo nabaculi. Ekukhuliseni isiginci sikagesi, ishubhu likhiqiza ama-harmonic ajabulisayo lapho licindezelwa ukuba ligcwale. Umbhobho ngokuvamile unikeza izici zokusika ezithambile uma kuqhathaniswa ne-bipolar transistor lapho inzuzo yokukhulisa icindezelwe. Kuyaziwa futhi ukuthi isabela kahle kakhulu kumdlali wesiginci oshukumisayo osukela ngomsindo ohlanzekile, lapho uthinta izintambo zesiginci, kuya ekuqhekekeni nasekuhlanekezelweni lapho ungena ekugcwaliseni.