load and quiescent currents of class AB amp

[yxo]

What dependence between quiescent current and maximum load current for class AB output amplifier. For example, may I say: if quiescent current "X", hence maximum output current is "Y"?

 

[naalald]

Hi,
Generally not. As you can see in the graph Iq is the quiescent current and Imax is the maximum load current. In class A amplifiers we design for these values to be the same in order to maximize the efficiency of the amplifier. But here in class AB amplifiers there is no relation between these two values.