Class AB Amplifier Circuit With Dynamic Current Gain Boost

The patent applies the dynamics principle by replacing constant current sources with dynamic current sources in the current sum branch. These dynamic current sources automatically adjust their current output based on the operating state: during steady state they maintain low current consumption, while during transitions they provide high current amplification (25 or higher). This dynamic adaptation resolves the contradiction between low steady-state current and high transition current amplification without requiring separate circuit configurations.

The patent applies parameter changes by dynamically adjusting the current output parameter of the current sources based on the amplifier's operating state. During steady state, the current sources operate at low current parameters to minimize power consumption. During transitions, the same current sources switch to high current parameters to achieve current amplification of 25 or higher. This parameter adaptation allows high current amplification without requiring a continuously high power supply, thus avoiding increased steady-state power consumption.

The patent applies the self-service principle by designing dynamic current sources that automatically detect and respond to the amplifier's operating state without external control signals. The current sources self-adjust their output based on intrinsic circuit conditions, eliminating the need for additional control circuitry or complex management systems. This self-service mechanism achieves high current amplification during transitions while maintaining relatively simple circuit architecture, as the dynamic behavior emerges from the circuit's own operating characteristics rather than external control.