ट्रान्झिस्टरचा उत्सर्जक प्रवाह 1 mA आहे. जर उत्सर्जित प्रवाह वाहकांपैकी 1% बेस रीकॉम्बिनेशनमध्ये गमावले तर β ची किंमत काय आहे? दिलेल्या पर्यायांमधून योग्य उत्तर ओळखा.

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ALP CBT 2 Electronic Mechanic Previous Paper: Held on 21 Jan 2019 Shift 1
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  1. 1
  2. 199
  3. 99
  4. 0.1

Answer (Detailed Solution Below)

Option 3 : 99
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संकल्पना:

ट्रान्झिस्टरसाठी, बेस करंट, एमिटर करंट आणि कलेक्टर करंट असे संबंधित आहेत:

IE = IB + IC

जेथे IC = βdc IB

βdc = ट्रान्झिस्टरचा प्रवाह प्रवर्धनांक ज्याची व्याख्या खालीलप्रमाणे आहे:

\(β=\frac{I_C}{I_B}\)

β हा संग्राहक बाजूकडे उत्सर्जित प्रवाहाचा अंश आहे.

गणना:

समजा एमिटर करंट IE आहे.

उत्सर्जित प्रवाह वाहकांपैकी 1% बेस रीकॉम्बिनेशनमध्ये गमावले असल्याने, कलेक्टर करंट एमिटर करंटच्या 99% असेल, म्हणजे,

IC = 0.99 IE

आणि बेस करंट 1% असेल, म्हणजे 0.01 IE

∴ β असेल:

\(β=\frac{I_C}{I_B}=\frac{0.99I_E}{0.01I_E}\)

β = 99

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