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Author Topic: High power audio amplifier design  (Read 1739 times)
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mr_byte31
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« on: October 16, 2009, 01:15:02 01:15 »

Hi all
I am designing now my audio amplifier my self but need some help and ur idea
I have attached my design
my idea is as follows
the opamp will be used to solve the problem of distortion of the transistors
the transistors will delliver power to the horn
I can add parallel transistors to npn and pnp so the current will be divided on them

my problems
1- I want to know the effect of noise on this circuit?"from supply"
2- does it give high quality?
3- I don't know two identical transistors that can deliver much current to the speaker?
4- should i use mosfet instead of BJT??


I hope to know ur idea and how to solve those problems
« Last Edit: October 16, 2009, 02:41:08 14:41 by mr_byte31 » Logged

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oldvan
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« Reply #1 on: October 16, 2009, 02:52:20 02:52 »

You have the basics there, but still needs a bunch more.
Biasing, current limiting, setting the gain on the opamp so it isn't behaving as a comparator, etc.

For a good start in the right direction, I found this post useful:
http://www.sonsivri.com/forum/index.php?topic=25347.msg85868
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mr_byte31
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« Reply #2 on: October 16, 2009, 02:43:13 14:43 »

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