BJT Explained in Nepali | Full Unit Physics / Electronics NPN & PNP, CE/CB/CC, | MrNiriTeach” NEB скачать в хорошем качестве

BJT Explained in Nepali | Full Unit Physics / Electronics NPN & PNP, CE/CB/CC, | MrNiriTeach” NEB

नमस्ते साथीहरू! आजको भिडियोमा हामी BJT (Bipolar Junction Transistor) को पुरा unit line-to-line नेपालीमा बुझ्नेछौं। BJT एकदमै महत्वपूर्ण electronic device हो जसले small signal amplification र switching दुबै काम गर्छ। यस भिडियोमा हामी सिक्नेछौं: BJT को Definition – Bipolar Junction Transistor के हो र किन यसलाई Bipolar Junction Transistor भनिन्छ। BJT को Types – NPN र PNP structure, arrow direction, majority carrier difference, real-life examples। Advantages of BJT – High current gain, voltage gain, low cost, fast switching, reliability। BJT Working Principle – Biasing condition, Emitter–Base junction forward bias, Collector–Base junction reverse bias, electron flow, hole flow, real-life amplification example। Common Configurations – CE, CB, CC। Common Emitter (CE) – High voltage & current gain, 180° phase shift, derivation of IC, IB, IE relation, VCE formula, real-life audio amplifier example। Common Base (CB) – High voltage gain, low current gain, input/output resistance, derivation α = IC / IE, real-life RF amplifier example। Common Collector (CC) – Voltage gain ~1, current gain high, in-phase output, buffer/impedance matching example। BJT as a Switching Device – Cut-off (OFF), Saturation (ON), input/output conditions, LED, motor, relay control example। Transistor Characteristics – Input characteristics (IB–VBE), Output characteristics (IC–VCE), Regions (Cut-off, Active, Saturation), practical application in amplifier design। DC Load Line – Definition, intercepts (IC max = VCC/RC, VCE max = VCC), Q-point explanation, step-by-step plotting, real-life amplifier design relevance। Derivations & Formulae – Line-to-line Nepali explanation: IC = β IB, IE = IC + IB α = IC / IE, IC ≈ α IE VCE = VCC – IC RC Real-Life Examples & Applications – Mobile phone amplifier LED switch circuits Radio & TV amplifier Motor driver circuits RF amplifier (CB configuration) Exam Tips & Important Notes – Key points, Q-point selection, current gain, voltage gain, phase difference, common mistakes students make। Visuals & Diagrams – Each concept with CE/CB/CC diagram, DC Load Line, switching circuit illustration, transistor symbol (NPN/PNP), current arrows (IC, IB, IE) for easy understanding। Summary Table – Types, configurations, advantages, regions, gain, phase difference, input/output resistance। यस भिडियोले तपाईंलाई BJT को पुरा unit line-to-line नेपालीमा बुझाउनेछ, real-life examples, derivation, diagrams, exam tips र practical applications सहित। यदि तपाईं CSIT, Class 12 Physics वा entrance exam को तयारी गरिरहनु भएको छ भने, यो भिडियो एकदमै उपयोगी छ। Subscribe गर्नुहोस् MrNiriTeach मा, र notification ON गर्नुहोस्, ताकि तपाईंले सबै physics र electronics tutorials सजिलै पाउन सक्नुहुनेछ। #BJT #BipolarJunctionTransistor #NPN #PNP #CE #CB #CC #Transistor #DCLoadLine #PhysicsNepali #CSIT #Class12Physics #NepaliPhysics #Electronics #Amplifier #SwitchingCircuit #MrNiriTeach #PhysicsTutorial #ExamPreparation #NepaliEducation #NEB #coding