Amasekhethi esikhulisi samandla adlala indima ebalulekile ezinsizakalweni ze-elekthronikhi ezingenakubalwa, kusukela kuzikhulisa-msindo kuye kuzithumeli.Ukuqonda izici zabo nemisebenzi eyinhloko kubalulekile kunoma iyiphi i-electronic hobbyist noma uchwepheshe.Kule bhulogi, sizohlola umhlaba othakazelisayo wamasekhethi esikhulisi samandla, sihlole izici zawo eziyinhloko, izimiso zokusebenza, kanye nezinhlelo zokusebenza.Ngakho-ke kungakhathaliseki ukuthi ungumfundi othanda ukwazi noma unjiniyela osafufusa, bopha ibhande njengoba siqala lolu hambo olubonisa ukuqonda.
Iyini isekethe yeamplifier yamandla?
Ngaphambi kokuthi sihlole izici zabo, ake siqale sichaze ukuthi sisho ukuthini ngesekhethi yeamplifier yamandla.Kalula nje, isekethe ye-amplifier yamandla iyisekhethi ye-elekthronikhi ekhulisa amasignali kagesi ezingeni eliphezulu lamandla elifanele ukushayela umthwalo, njengesipikha noma i-antenna.Ngokuvamile, amasekhethi esikhulisi samandla athatha isignali yokufaka yomsindo wezinga eliphansi noma ifrikhwensi yomsakazo futhi ayikhulise ngokuphawulekayo ukuze inikeze amandla adingekayo wohlelo oluhlosiwe.
Izici zesekethe ye-amplifier yamandla
1. Amandla okuphatha amandla: Amasekhethi esikhulisi samandla aklanyelwe ukuphatha amazinga aphezulu wamandla uma kuqhathaniswa nezinye izinhlobo zama-amplifier.Ikhono labo lokuletha amandla abalulekile libenza bakwazi ukushayela imithwalo enzima ngendlela efanele nangokwethembeka.
2. I-Linearity: Izikhulisamandla zilwela ukulondoloza ngokunembile umumo nemininingwane yesiginali yokufaka.I-Linearity ibalulekile ekunciphiseni ukuhlanekezela kanye nokuqinisekisa ukukhiqizwa kabusha okuthembekile kwesiginali yoqobo.
3. Ukusebenza kahle: Ukusebenza kahle kuwukucatshangelwa okuyinhloko kumasekhethi esikhulisi samandla ngoba kunquma ukuguqulwa kwamandla kagesi abe amandla okukhiphayo awusizo.Izikhulisamandla ezisebenza kahle kakhulu zinciphisa ukumosheka kwamandla, ngaleyo ndlela zehlise ukusetshenziswa kwebhethri nokukhishwa kokushisa.
4. Umkhawulokudonsa: Umkhawulokudonsa wesekethe yesikhulisi samandla ubhekisela kububanzi befrikhwensi engakwazi ukukhuliswa ngokwethembeka.Ngokuya ngohlelo lokusebenza, izikhulisamandla zingahlukaniswa njengezikhulisi zamandla omsindo ezisebenza ebangeni lomsindo, noma izikhulisamandla zefrikhwensi yomsakazo ezisetshenziswa ezinhlelweni zokuxhumana ezingenantambo.
Imisebenzi esemqoka yesekethe ye-amplifier yamandla
1. Ukukhulisa isignali: Umsebenzi oyinhloko wesifunda sesikhulisi samandla ukukhulisa isignali ezingeni eliphezulu lamandla ukuze ikwazi ukunqoba ukuthintana komthwalo, njengesipikha noma i-antenna.Izikhulisamandla zamandla zigcina ukuthembeka kanye nekhwalithi yesiginali yokufaka ngenkathi zinikeza amandla anele okushayela umthwalo.
2. Ukumatanisa kokuphazamiseka: Amasekhethi esikhulisi samandla ajwayele ukuhlonywa inethiwekhi ehambisana ne-impedance ukuze kuthuthukiswe ukudluliswa kwamandla phakathi kwe-amplifier nomthwalo.Lokhu kuqinisekisa ukuthi amandla amakhulu adluliswa, kunciphisa ukubonakaliswa nokulahlekelwa kwesignali.
3. Isimo Sesiginali: Izikhulisamandla zingaqukatha izigaba zesignali zokuthuthukisa ikhwalithi yesiginali yokufaka, zisuse umsindo, noma zisebenzise ukuhlunga okuthile ukuze zenze okukhiphayo kuhlelo oluthile.Lezi zigaba zingabandakanya ama-preamplifiers, izilinganisi, noma izihlungi.
4. Isekhethi yokuvikela: Amasekhethi esikhulisi samandla avame ukuba nesekhethi yokuvikela eyakhelwe ngaphakathi ukuze avimbele ukulimala okungaba khona okubangelwa i-voltage eyeqile, yamanje, noma ukushisa.Lezi zindlela zokuvikela zisiza ukwelula impilo ye-amplifier ngenkathi iqinisekisa ukusebenza okuphephile.
Isiphetho
Ukufingqa, amasekhethi esikhulisi samandla ayizingxenye ezibalulekile ezinhlobonhlobo zezinhlelo zokusebenza zomsindo ne-RF.Izici zabo, njengokuphatha amandla, umugqa, ukusebenza kahle, kanye nomkhawulokudonsa, zichaza amandla abo okusebenza.Ukuqonda imisebenzi eyinhloko yezikhulisi zamandla, okuhlanganisa ukukhulisa isignali, ukufaniswa kwe-impedance, isimo sesignali nokuvikela, kusivumela ukuba siqonde ukubaluleka kwazo ekushayeleni izikhulumi, ukudlulisa amasignali kanye nokuhlinzeka ngomuzwa womsindo wekhwalithi ephezulu.Njengoba ubuchwepheshe buthuthuka, izikhulisamandla ziyaqhubeka nokuvela ukuze zinikeze ukusebenza okukhulu, ukusebenza kahle, kanye nokuguquguquka kwezinhlelo eziningi ze-elekthronikhi.
Isikhathi sokuthumela: Sep-20-2023