Current feedback amplifiers have great potential. I also made my own version of a similar amplifier. In such amplifiers, the output impedance is close to ohmic and to stabilize the operation, a small inductance is enough, and often it is not needed at all.
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What is the role of D7/D8 ?
The effect of dynamic Zener capacitance is used . Bonus a small limit on the maximum current of the output transistors in short circuit mode
Используется эффект динамической емкости стабилитрона . Бонус небольшое ограничение максимального тока выходных транзисторов в режиме короткого замыкания
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- Apex A40 fundamental improvement. (Sandy)