Class AB power amplifier from "Electronic Devices" by Thomas L. Floyd
This is my answer to SE EE question Class AB power amplifier from "Electronic Devices" by Thomas L. Floyd . My answer Imagination is more important than knowledge. A. Einstein. How do we visualize the circuit operation? The notion of voltage as height is the most common idea of this electrical quantity (which is why we say "high" and "low" and not "big" and "small" voltage). It originates from the gravitational or "water tower" analogy where the height of a water column is proportional to the potential energy of the water. According to this approach, we can explain this circuit "geometrically" by imagining voltages as vertical segments ( voltage bars ) with a height proportional to the voltage value. It is well known that diodes maintain (approximately) constant voltage at their terminals (see this intuitive explanation ). So, the voltage drops across them can be represented by segments of constant length (0.7 un...