what circuits, networks or stages need components to stabilize them. Designers put diodes to stabilize the bias and temperature for transistors. How do you tell when looking at a schematic which components are for stabilizing, stabilizing the bias and stabilizing the temperature to prevent thermal runaway or bias drifting. I have seen complementary power amplifiers use diodes to prevent thermal runaway and bias stabilized. I'm not sure what these stabilizing circuits are called.