AM संग्राही का IF मान किसके बीच होता है?

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ALP CBT 2 Electronic Mechanic Previous Paper: Held on 21 Jan 2019 Shift 1
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  1. 50 kHz से 250 kHz
  2. 5 kHz से 25 kHz
  3. 50 kHz से 25 kHz
  4. 430 kHz से 25 MHz

Answer (Detailed Solution Below)

Option 4 : 430 kHz से 25 MHz
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Detailed Solution

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AM संग्राही:

  • सुपरहेट्रोडाइन (SHD) संग्राही का प्रयोग AM संग्राही परिपथ में किया जाता है।
  • AM संग्राही के लिए मध्यवर्ती आवृत्ति मान 430 kHz से 25 MHz के बीच होता है।
  • AM के लिए मानक IF, 455 kHz है।

महत्वपूर्ण बिंदु:

AM के लिए SHD संग्राही, स्थानीय दोलक आवृत्ति को निम्न द्वारा ज्ञात किया गया है:

  • निम्न-रूपांतरण के लिए: fL0 = fs - fIF
  • उच्च-रूपांतरण के लिए: fL0 = fs + fIF


जहाँ,

fL0 = स्थानीय दोलक आवृत्ति

fs = संचारित सिग्नल आवृत्ति

fIFमध्यवर्ती आवृत्ति

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