Hello, I want to design and build an hi-fi amplifier made exclusively by parallel bipolar opamp (with a small output resistor each).
The idea is to put in parallel 40 dual opamps unity gain stable (which I like the sound, like LT1364 or AD826 or a mix between the two) and bias each of them in class A with FETs (a switch can exclude them to allow more current in class AB)
Each of them can issue 50 ma (in class AB) max.
I should get enough current to pilot 8 ohm at 10 Watt, dual channel.
Idea is crazy, but i want to go.
What do you think (please only technical comment/suggestion)....
The idea is to put in parallel 40 dual opamps unity gain stable (which I like the sound, like LT1364 or AD826 or a mix between the two) and bias each of them in class A with FETs (a switch can exclude them to allow more current in class AB)
Each of them can issue 50 ma (in class AB) max.
I should get enough current to pilot 8 ohm at 10 Watt, dual channel.
Idea is crazy, but i want to go.
What do you think (please only technical comment/suggestion)....
Here's the first part of Doug Self's Design Article
This links to a copy of the article...
https://www.google.com/url?sa=t&rct...d=1308673533&usg=AOvVaw3z5d_ABaxOCv8mdy7wMACG
This links to a copy of the article...
https://www.google.com/url?sa=t&rct...d=1308673533&usg=AOvVaw3z5d_ABaxOCv8mdy7wMACG
Hello
a) Is better to parallel many amp at unity gain without feedback resistor (just a wire), or many amp at gain two like the datasheet shows by using 1K feedback resistor and 1K to ground from the negative input?
b) Is better to have some global feedback or set parallel colums with local feedback each? Or no feedback at all?
c) 5 ohm resistor is ok at the output of each opamp?
a) Is better to parallel many amp at unity gain without feedback resistor (just a wire), or many amp at gain two like the datasheet shows by using 1K feedback resistor and 1K to ground from the negative input?
b) Is better to have some global feedback or set parallel colums with local feedback each? Or no feedback at all?
c) 5 ohm resistor is ok at the output of each opamp?
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