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Old 18th December 2008, 05:19 PM   #1
Stee is offline Stee  Italy
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Default bVAS - just an idea



from NICO design
an idea to have perfect balanced VAS rails

need an output stage
it's coming from my lab a
modern CFP with mosfet driver
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Old 18th December 2008, 06:24 PM   #2
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Default Re: bVAS - just an idea

Quote:
Originally posted by Stee


from NICO design
an idea to have perfect balanced VAS rails

need an output stage
it's coming from my lab a
modern CFP with mosfet driver
I am eager to see your output stage Steve

Kind regards

Nico
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Old 18th December 2008, 07:36 PM   #3
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Default Your circuits use to be very simetrical fratello


Questo va molto benne!

This is something we all like.

Scientists studying genetics and human behavior have discovered the base of beauty is simetry...not the perfect simetry, but the non hardly assimetrical faces.

Seems stable...ballanced... simetrical things, if we put them to float into the ocean, it will not sink...front part will not be heavier than the opposite part... ballanced.

Unfortunattely, i have found those last long decades building amplifiers, that is very hard to find PNP and NPN matched devices... this result those designs are applied into chip amplifiers, they have technology to ballance the units inside the same metal waffer.

Beautifull, has sex appeal, seduction, looks nice...your amplifiers are very interesting fratello.

arrivederci

Carlo
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Old 19th December 2008, 02:52 PM   #4
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hi nico
can you redesign this schematic with 2sk1058
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Old 19th December 2008, 03:49 PM   #5
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Quote:
Originally posted by zerohead_ak47
hi nico
can you redesign this schematic with 2sk1058
Hi Zerohead,

what you have done will work. Gate resistors 470 ohms. Keeping in mind that it will be class A so start with small supply so you first get the feel for heat.

But let us wait for Steve, I think he is going to make something special. I hope he turns this into a project.

Hi Carlos,

thanks for the compliment. This is a working amplifier. I am not such a perfectionism as you and I seldom worry about matching device gains. This amp works extremely well with even simple transistors.

Kindest regards

Nico
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Old 19th December 2008, 04:24 PM   #6
Stee is offline Stee  Italy
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Default leading colleagues

Thank you very much Brothers
I hope this research can produce great satisfaction

indeed difficult to find complementary
in the world of human

for example i have match 2SA1302 with 2SC5200 (!)

2SK216 and 2SJ79 it's possible find togheter on ebay
also for NTE 36/37 12A 100W

this important experiment can produce an excellent result
only if you use true similar copule (10%)

see the CMP
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