Transistor da aikataƙi

Takaitaccen Transistor

Transistor yana ne aiki da wasu mai siffofi masu uku (Emitter, Base, da Collector) da kuma duwatsu biyu (Base-Emitter da Base-Collector).

Transistor yana ne aiki da wasu mai siffofi masu uku: Emitter (E), Base (B), da Collector (C). Yana da duwatsu biyu: Base-Emitter (BE) da Base-Collector (BC). Transistors suna yi aiki a tsofuta uku: cutoff (daidai off), active (amplifying), da saturation (daidai on).

A lokacin da transistors sun yi aiki a tsofutan active, suke na yi hankali ga karamin alama baki daya ba. Wannan halaye ya shafi gida da zane-zane. Za ka duba npn bipolar junction transistor (BJT) wanda aka bias don yi aiki a tsofutan active, inda duwatsu BE ya zama forward biased da kuma duwatsu BC ya zama reverse biased.

A cikin transistor npn, Emitter yana da dabbobi mai kyau, Base yana da dabbobi mai tsawo, da Collector yana da dabbobi mai karfe. Base yana da kadan, inda Emitter yana da kadan mai yawa, da Collector yana da kadan mai yawan daidai.

Forward bias wanda yake kan Base da Emitter terminals yana ba da aiki wanda ke yi karamin alama IB da take lura zuwa Base region. Wannan karamin alama yana da muhimmanci a nan mikroampere (μA), saboda VBE yana daidai 0.6 V.

Wannan halaye zai iya haɗa da zane-zane da suka fito zuwa Base region ko holes da suka zama a cikinsu. Holes da suka zama suka ji electrons daga Emitter, wanda ke yin recombination ta holes da electrons.

Amma saboda Base yana da dabbobi mai tsawo idan karshe da Emitter, za a iya samun miliyan electrons masu yawa idan karshe da holes. Don haka, ba a bangare da recombination, za a fi samu miliyan electrons masu yawan daidai. Electrons masu yawan daidai suke lura zuwa Base region da kuma zama zuwa Collector terminal saboda bias wanda yake kan Collector da Base regions.

Wannan yana nufin karamin alama IC wanda ke lura zuwa Collector. Daga wannan zai iya sanar da cewa tare da karamin alama IB, za a iya samun wahala mai yawa a karamin alama IC. Wannan yana nufin amplification, wanda ke yi nasara don cewa npn transistor wanda ke yi aiki a tsofutanta active yana iya yi amplification. Gain da ke faruwa da ita zai iya faruwa da matematika kamar-

A nan za ka duba npn transistor wanda akwai alama da ke lura bayan Base da Emitter terminals, inda output yana lura a cikin load resistor RC, wanda yana kan Collector da Base terminals, kamar yadda aka bayyana a Figure 2.

A nan za ka duba npn transistor wanda akwai alama da ke lura bayan Base da Emitter terminals, inda output yana lura a cikin load resistor RC, wanda yana kan Collector da Base terminals, kamar yadda aka bayyana a Figure 2.

Karin bayani, transistor yana daidai ci gaba da aiki a tsofutanta active tare da amfani da voltage supplies masu daidai, V EE da VBC. A nan yadda small change a input voltage Vin ke canza karamin alama IE daidai saboda resistance da ke kan input circuit yana da tsawo (saboda forward bias condition).

Wannan yana canza karamin alama Collector daidai saboda magnitude da ke kan base current yana da tsawo. Wannan wahala mai yawa a IC yana ba da drop mai yawa a cikin load resistor RC, wanda yana nufin output voltage.

Saboda haka, za a samu version mai yawa daidai a input voltage a cikin output terminals na device, wanda ke yi nasara don cewa circuit yana iya yi amplification. Mathematical expression don gain associated wanda ke faruwa da wannan phenomemon yana nuna

Idan an bayyana cewa explanation provided yana da npn BJT, similar analogy yana daidai da pnp BJTs. Tare da hakan, za a iya bayyana amplifying action ta wasu transistor kamar Field Effect Transistor (FET). Kafin haka, ya kamata a tabbatar da cewa akwai many variations to the amplifier circuit of transistors kamar

First Set: Common Base/Gate Configuration, Common Emitter/Source Configuration, Common Collector/Drain Configuration

Second Set: Class A amplifiers, Class B amplifiers, Class C Amplifiers, Class AB amplifiers

Third Set: Single Stage Amplifiers, Muti-Stage Amplifiers, and so on. Amma basic working principle yana daidai.