Unlike traditional Class AB designs, its bias current does not depend on temperature and no adjustment is required. Diodes D1 and D2 are on when transistors are not conducting so the op-amps are ...

Bias circuits for class AB buffers don't have to ... Figure 4 shows one half of a headphone stereo amplifier with THD . 0.005% ... it is omitted in a practical circuit and diodes D1-D4 can be ...

It is presented in two parts, in pdf file format (no registration required), as follows: Part 1 of this article examines and discusses PIN diodes, PIN-diode bias interface, and the traditional ...