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Old 2nd September 2004, 10:50 PM   #1
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Default A power amplifier very (too much) simple.

Hi averybody.
I am planning a power amplifier to couple on the bass section of mine 3 ways loadspeaker.
On the mid-high section Zen V4 works one. Because I have a trafo from 46V 11A, I have thought to an outline very simple one, with the first stage formed from a BOSOZ that directly drives an
array of mosfet in push-pull.
Because I am not expert to make projects, I am asking to you with more experience if this project can work, or if are there some errors.
The amplifier should have approximately 50W with the first 5 in A class, and would work very well under low impedences load.
Any comments?
Thanks to averybody.
Ciao.
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Old 3rd September 2004, 03:35 PM   #2
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Hey, out there.........
No one have to do some comments?
Ciao
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Old 3rd September 2004, 03:39 PM   #3
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Is your transformer 46 Volts AC with a center tap? If so,
it will give you maybe +/-30 volts to work with, which is
just great. If it's not center tapped, we have to consider
other alternatives.
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Old 3rd September 2004, 03:48 PM   #4
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Hi Mr Pass.
The 46V is without center tap.
For the input stage I would use a second power supply 55-0-55 80VA.
Ciao.
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Old 3rd September 2004, 07:29 PM   #5
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So now you have maybe 60 volts under load. It's probably
easier to select a different amplifier for the transformer or
a different transformer for the amplifier.

Or you could use that 60+ volts to drive BOSOZ.
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Old 3rd September 2004, 07:44 PM   #6
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Because I have already got the transformer, it can be better to change tha amplifier.
But doesn't the BOSOZ works at +-60V?
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Old 15th September 2004, 03:59 PM   #7
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And could this one be better?
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Old 17th September 2004, 02:12 PM   #8
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Default iffy pics!

the second picture was a bit blurred, any chance of posting a better pic? and can someone please clarify what the power rail conections are, coz im new at designing these things and just follow the drawing. thanks guys, steve.. ..
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