Determine Maximum Circuit Efficiency of a Class B Amplifier
For a class B amplifier with Vcc 25V driving an 80 load, determine i) maximum I/P power. ii) maximum O/P power. iii) maximum circuit efficiency.
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maximum circuit efficiency of a class B amplifier = pi/4 * 100 = 78.5%
RMS value of voltage = 25V/ sqrt(2)
output power max = 25^2 / (2*80) = 625/160 = 3.88 W
Input power max = 25^2/80 * 2/π W = 4.973 W
max efficiency = 3.88/4.973 = 78.5%
RMS value of voltage = 25V/ sqrt(2)
output power max = 25^2 / (2*80) = 625/160 = 3.88 W
Input power max = 25^2/80 * 2/π W = 4.973 W
max efficiency = 3.88/4.973 = 78.5%
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