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Old 9th March 2009, 01:02 AM   #1
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Rafael L's Avatar
 
Join Date: Nov 2008
Location: Brazil
Default Design high-End of brazil

Hello to All

There is a page in portuguese with interesting projects, the scheme you will understand, to text use Google Translade.

I will show some projects:

Power amplifier 25W/8 ohms
SCH
http://www.geocities.com/fabiomauriciotimi/fm2208.png

http://www.geocities.com/fabiomauriciotimi/2208ps.png

http://www.geocities.com/fabiomauriciotimi/2208_chp.png

PCB
http://www.geocities.com/fabiomauriciotimi/2208pcb.png

High-End Power amplifier 30W/8 ohms, negative feedback 15 dB, open loop > 300KHz -3dB, distortion < 0,02%
http://www.geocities.com/fabiomauriciotimi/fm1455.png
the designer published amplifier this another site , can see some numbers. That has 100W
http://sites.mpc.com.br/albuquerque/...450/fm1450.htm

Preamplifier
http://www.geocities.com/fabiomauriciotimi/cm205.png

Discrete preamplifier
http://www.geocities.com/fabiomauriciotimi/cm227.png

Headphones amplifier Class A:

http://www.geocities.com/fabiomauriciotimi/hp707.gif

Three-way active crossover
http://www.geocities.com/fabiomauriciotimi/df4.png

All projects are here (click "Diagrama Elétrico" to see the SCH)

http://www.geocities.com/fabiomauriciotimi/projetos.htm

Bye
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