Power Amplifier Solved Problems Pdf. Class b stage the efficiency of a power amplifier may be increased using the following (fig. These large signal amplifiers are called as power amplifiers.
Typical Video Amplifier Circuit
If the turn ratio is 10:1, what is the value of load appearing on the primary? (si bjt with β = 200, v a = 150 v, ignore early effect in bias calculations). An amplifier rated at 40w output is connected to a 10ω speaker.
Typical Video Amplifier Circuit
After several stages of voltage gain, however, the signal becomes large and uses the entire load line. The amplifier has a power gain of 20 db. Using this assumption and kcl at an input node is adequate to solve most any op amp problem. An amplifier feeding a resistive load of 1kω has a voltage gain of 40 db.