B वर्ग प्रवर्धक के लिए, VCC = 30 V के आपूर्ति वोल्टेज का उपयोग करके और 12 Ω का भार चलाते हुए, ट्रांजिस्टर अपव्यय की गणना करें।

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  1. 12 W
  2. 10 W
  3. 5 W
  4. 8 W

Answer (Detailed Solution Below)

Option 4 : 8 W
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संकल्पना:

वर्ग B प्रवर्धक में, प्रत्येक ट्रांजिस्टर द्वारा शक्ति अपव्यय के लिए दिया गया मान है 

Pd = VL × IL

अब, ट्रांजिस्टर द्वारा अधिकतम शक्ति का अपव्यय होता है जब, \({V_L} = \frac{{{V_{cc}}}}{\pi }\)

और \({I_L} = \frac{{{V_{cc}}}}{{\pi \cdot {R_R}}}\)

अब, \({P_d} = \frac{{{V_{cc}}}}{\pi } \times \frac{{{V_{cc}}}}{{\pi \cdot {R_L}}}\) 

\(= \frac{{V_{cc}^2}}{{{\pi ^2}{R_L}}}\)

गणना:

Vcc = 30 V

भार प्रतिरोध, RL = 12 Ω

\(\Rightarrow {P_d} = \frac{{{{30}^2}}}{{{\pi ^2}\; \times \;12}} = 7.68\;W \approx 8\;W\)

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