Wani PNP Transistor?

Mai shi ne PNP Transistor?

Bayanin PNP Transistor

PNP Transistor yana nufin transistor da kungiyar junta biyu da N-type semiconductor tafi kan duwatsu P-type semiconductors.

Alamomin PNP Transistor

Alamomin ya samu tsirriwar Emitter wanda ya nuna hukuma na fayiladduka.

Hukuma na Fayiladduka

A cikin PNP Transistor, fayiladduka ta haɗa daga Emitter zuwa Collector.

Siffar Tattalin Aiki

Karamin voltage (VEB) ta haɗa da Emitter (P-type) kuma karamin minus ta haɗa da Base terminal (N-type). Saboda haka, Emitter-Base junction ta haɗa a cikin forward bias.

Kuma karamin voltage (VCB) ta haɗa da Base terminal (N-type) kuma karamin minus ta haɗa da Collector terminal (P-type). Saboda haka, Collector-Base junction ta haɗa a cikin reverse bias.

Saboda wannan bias, depletion region a Emitter-Base junction ta fiya saboda ta haɗa a cikin forward bias. Kuma Collector-Base junction ta haɗa a cikin reverse bias kuma depletion region a Collector-Base junction ta kadan.

Emitter-Base junction ta haɗa a cikin forward bias, tare da many holes daga Emitter suka gama zuwa Base. Daga baya, mutum electrons daga Base suka gama zuwa Emitter kuma suka recombine da holes.

Kasan holes a Emitter ta fi karin electrons da ke Base layer. Amma karin electrons a Base ta kadan saboda ita ce kungiyar mai girma da kuma layi. Saboda haka, duk holes daga Emitter zai gama zuwa Base layer.

Saboda haruffa holes, fayiladduka zai haɗa a cikin Emitter-Base junction. Wannan fayiladduka yana nufin Emitter current (IE). Holes suna da muhimmanci a cikin fayiladduka ta Emitter.

Holes da ba su recombine da electrons a Base, za su gama zuwa Collector. Collector current (IC) zai haɗa a cikin Collector-Base region saboda holes.

PNP Transistor Circuit

Circuit of PNP transistor yana nuna a cikin wannan takarda.

Idan a duba circuit of PNP transistor da NPN transistor, a nan polarity da hukuma na fayiladduka suka gaba.

Idan PNP transistor ta haɗa da voltage sources kamar yadda ake nuna a cikin wannan takarda, base current zai haɗa a cikin transistor. Mutum base current ya kontrola fayiladduka mai girma daga Emitter zuwa Collector idan Base voltage ya fiya Emitter voltage.

Idan Base voltage ba fiya Emitter voltage, fayiladduka ba zai iya haɗa. Saboda haka, ita ce buƙata a bayyana voltage source da ya fi 0.7 V a cikin reverse bias.

Biyu resistors RL da RB an haɗa a cikin circuit don kunshi fayiladduka mai girma a cikin transistor.

Idan a yi Kirchhoff’s current law (KCL), Emitter current yana nuna jumla na base current da collector current.

PNP Transistor Switch

Gaskiya, idan switch ta OFF, fayiladduka ba zai iya haɗa, tare da open circuit. Idan switch ta ON, fayiladduka zai haɗa a cikin circuit, tare da closed circuit.

Transistor ba shi ne power electronics switch wanda zai iya aiki kamar switches masu gida. Abubuwan da ake magana shine yadda ake amfani da PNP transistor a cikin switch?

Kamar yadda ake nuna a cikin aiki na PNP transistor, idan Base voltage ba fiya Emitter voltage, fayiladduka ba zai iya haɗa. Saboda haka, Base voltage yana buƙata 0.7 V a cikin reverse bias don transistor ya haɗa. Yana nufin, idan Base voltage ta zero ko kadan da 0.7 V, fayiladduka ba zai iya haɗa kuma zai tare da open circuit.

Don turn ON transistor, Base voltage yana buƙata fiye da 0.7 V. A cikin wannan halin, transistor zai tare da close switch.