I got an idea that i can´t get loose.
What if we apply current dumping to reduce crossover distortion in an ordinary amplifier.
With an internal feedback of 850 ohms it puts some considerations of the input stage but that can be a later discussion.
Has someone seen a similar idea?
What if we apply current dumping to reduce crossover distortion in an ordinary amplifier.
With an internal feedback of 850 ohms it puts some considerations of the input stage but that can be a later discussion.
Has someone seen a similar idea?
It is just thought as a part of an amplifier.The OP as a tiny picture of a VAS stage and the transistors as in usual amplifiers. Here 20 and R21 + L1 + 47pF + R17 makes the current dumping .
So the question should have been:
Has anyone seen the current dumping principle used with any form of bias for the output transistors?
It must not look like this. Any other topology is just as interesting.
So the question should have been:
Has anyone seen the current dumping principle used with any form of bias for the output transistors?
It must not look like this. Any other topology is just as interesting.
I know that with the 405-2, QUAD added a very small bias to the current dumpers with a single diode.
In your circuit the diode would replace the T5 circuit.
This helped to decrease any xover spikes from high frequency signals where the basic circuit would work less well due to limitations in the class A amp, for example.
With modern, high-speed opamps it probably would make less difference.
Jan
In your circuit the diode would replace the T5 circuit.
This helped to decrease any xover spikes from high frequency signals where the basic circuit would work less well due to limitations in the class A amp, for example.
With modern, high-speed opamps it probably would make less difference.
Jan
You also need to remove C-large so there’s DC feedback to the opamp input; as drawn, there’s no bias at DC.