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Old 16th March 2005, 10:36 PM   #1
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Default A good Brazilian Amplifier, class A switching to AB in hi power

Made in the eighties by Gradiente, started with hi speed transistors.

The first one to use those "hi speed" devices here.

Now a days it is already searched by native audiophiles.

Produce a warm (a little mufled) sound, with good dinamics and temperature good to keep you coffee hot....just put is over the amplifier...do not forget the dish to protect from coffee leakage to circuit.

You cannot find to sell....the ones that have do not intend to sell..... when you find, people is asking more than 500 dollares.

here is schematic, a friend send me, completely free to you all.

be happy.

Carlos
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Old 16th March 2005, 10:39 PM   #2
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Default If you want a more clear diagram, in PDF, as M_evil in our forum

He has a PDF schematic...but have some name under that must be supressed because this name has legal problems.

Was something that came from another forum.

regards,

Carlos
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Old 16th March 2005, 11:17 PM   #3
rodolfo is offline rodolfo  Mexico
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hi carlos can u send me pdf sch. please
i fanatic gradiente
tks
rodolfo
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Old 17th March 2005, 12:04 AM   #4
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Default Rodolpho, nice to meet you. Please, send your personal

Adress, your mail adress to my Email adress:

nanabrother@yahoo.com

So, i will be able to send you the PDF.

That PDF file, has another forum text under...i think not delicated to publish here with that thing there.

So, it is small, less than 20K, and have the Adobe magnificent quality, but i do not want to publish here that file.

Having you adress, with pleasure, imediatelly i will send you.

regards,

Carlos
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Old 17th March 2005, 12:27 AM   #5
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Default The output transistor is a 150W dissipation unit

And it is alike the 5200 famous transistor....160 Volts maximum and 16 amperes maximum current.

To be safe, using 8 ohms loads, better to use the output voltage with plus and minus 35 volts and 40 volts plus and 40 volts minus to power input stages.

regards,

Carlos
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Old 17th March 2005, 01:11 AM   #6
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number 1
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Old 17th March 2005, 01:12 AM   #7
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Old 17th March 2005, 01:13 AM   #8
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Old 17th March 2005, 01:15 AM   #9
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Old 17th March 2005, 01:16 AM   #10
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