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how to find to the power dissipation in the transistor of a Class-A amplifier

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elvis0206

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I always get confused in finding the average power maximum power and the maximum instantaneous power dissipated in the transistor, which is an Emitter-Follower device ,for different cases.

case1: Iq=[Vcc-Vce(sat)]/R
case2: Iq<[Vcc-Vce(sat)]/R
case3: Iq>[Vcc-Vce(sat)]/R

It is great for you to give detailed explanation for it!!!
and thanks a lot for you
 

Max average power = iq rms x Re + ic rms x Rc

Max instantaneous power is also known as peak power = iq peak x Re + ic peak x Rc
 

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