yi-Chesnimages
Types of resistors
Ama-resistors ayingxenye ebalulekile kagesi futhi avamile kangangokuthi ngokuvamile athathwa kalula. Ama-resistors asebenza ngaphansi komgomo woMthetho ka-Ohm osebenzisa umbono wokuthi i-current egijima ku-conductor ukusuka ephuzwini A ukuya endaweni engu-B ilingana ngokuqondile ne-voltage kuwo wonke amaphuzu amabili.
Kalula nje, umthetho ka-Ohm uwumphumela wezibalo ezintathu zezibalo ezibonisa ubuhlobo phakathi kwe-voltage, yamanje, nogesi. Ukusebenzisa lezi zibalo, umuntu angazisebenzisa ndawonye ukuze abonise umehluko, owaziwa nangokuthi ukwehla kwamandla kagesi.
I-resistor yokuqamba iwuhlobo oluvame kakhulu lokumelana. Lezi resistors azibizi futhi zinemisebenzi eminingi. Ukumelana kwakhiwa ngokugxilisa uthuli lwekhabhoni kahle futhi luhlanganiswe ne-graphite ne-powder yobumba engenzi-conductive ihlanganisa konke ndawonye. Yonke ingxube ibunjwe yaba isikhunta esiyicylindrical esinamathisele izintambo zensimbi ekugcineni ngakunye. Lezi zinamathiselo zihlinzeka ngoxhumano lukagesi. Ahlelwe esigabeni samandla aphansi kuya kwamaphakathi, okuwenza abe yikhandidethi elisebenzayo lokusebenzisa imvamisa ephezulu.
Izihlungi zefilimu zenziwe ngefilimu yensimbi, ifilimu ye-carbon kanye nezinhlobo ze-metal oxide film resistor. Ngokuvamile, zenziwa kusetshenziswa izinsimbi ezihlanzekile ezifakwa endongeni ye-ceramic eboshiwe. Lesi resistor sivumela ukumelana nokubekezelelana okuseduze uma usiqhathanisa nesinqamuleli sokwakheka kwekhabhoni esilula kakhulu. Lezi zinto eziphikisayo zinenani eliphakeme le-ohmic kanye nokuzinza okuqinile kwezinga lokushisa uma kuqhathaniswa nozakwabo wekhabhoni. Zikhiqiza umsindo omncane okuzenza zibe inketho ekhangayo yezinhlelo zokusebenza zefrikhwensi ephezulu.
Izinto ezivimbela amanxeba ngocingo zilungiswa ngokusongelwa ngocingo oluncane lwensimbi oluyingxubevange phezu kwe-ceramic yangaphambili ngendlela ezungezayo. Ithi akufane ne-resistor yefilimu njengoba yomibili ihloselwe ukuphatha amaza kagesi aphezulu kunezinye izinhlobo zokuphikisa. Ama-resistors anenxeba afakwa kalula kumapuleti ensimbi nama-heatsink. Lokhu kwandisa amandla azo okubambelela ekushiseni futhi kuzokhulisa amandla azo.