Hauv kev xyaum thaum lub transistor raug muab "OFF", cov xau me me ntws los ntawm lub transistor thiab thaum tag nrho "ON" cov cuab yeej muaj tus nqi qis ua rau muaj qhov me me saturation voltage (V CE) hla nws. … Thaum lub siab tshaj plaws Collector tam sim no ntws tus transistor tau hais tias yog Saturated.
txhais li cas los ntawm saturation tam sim no hauv transistor?
Saturation ntawm bipolar transistor txhais tau hais tias nce ntxiv hauv lub hauv paus tam sim no tsis tshwm sim (yuav luag) qhov nce ntawm cov khoom tam sim no (emitter hauv hom rov qab). Hom no tsis tuaj yeem hu ua yuam kev. Qee zaum (switching circuit) lossis transistor hauv saturation lossis kaw.
Puas BJT puas yog tam sim no saturation?
Koj nrhiav tsis tau vim tsis muaj "Saturation tam sim no" hauv BJT tiag tiag. Yuav muaj ntau hom kev tsis sib xws hauv Ebers-Moll qauv uas koj yuav nrhiav tsis tau hauv daim ntawv teev cov ntaub ntawv. Tsis tas li ntawd nco ntsoov tias tsis muaj ib qho chaw ruaj khov uas BJT dheev nkag / tawm ntawm qhov saturation.
Dab tsi yog qhov saturation tam sim no hauv NPN transistor?
Ib transistor mus rau hauv saturation thaum ob lub hauv paus-emitter thiab hauv paus-collector junctions yog rau pem hauv ntej biased, yeej. Yog li yog tias cov khoom siv hluav taws xob poob qis hauv qab qhov hluav taws xob, thiab qhov hluav taws xob emitter nyob hauv qab ntawm lub hauv paus voltage, ces lub transistor nyob rau hauv saturation. Xav txog qhov no Common Emitter Amplifier circuit.
Vim li cas VBE 0.7 V?
NyobLub hauv paus emitter junction yog PN kev sib tshuam lossis koj tuaj yeem xav tias yog diode. Thiab voltage poob hla lub silicon diode thaum pem hauv ntej biased yog ~ 0.7V. Tias yog vim li cas feem ntau ntawm cov phau ntawv sau VBE=0.7V, rau NPN silicon transistor nrog rau pem hauv ntej biased emitter hlws ris ntawm chav tsev kub.
