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Old 12th December 2012, 07:42 AM   #1
Shelah is offline Shelah  Zambia
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Default HELP!!!!!!!

can anyone translate this into english for me cause i intend on making this mosfet amplifier!!!
Attached Files
File Type: pdf 250w-bipolar.pdf (699.0 KB, 118 views)
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Old 12th December 2012, 08:59 AM   #2
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Not able to transate but...

Rangkaian 200W MOSFET Amplifier | Audio Circuits

250Watts MOSFET Audio Amplifier Circuit with J162-K1058 – Free Electronic Circuit Schematics
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Old 12th December 2012, 09:38 AM   #3
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Quote:
Originally Posted by Shelah View Post
can anyone translate this into english for me cause i intend on making this mosfet amplifier!!!
Very bad headline. Start a new thread with more exact headline (more exact topic) e.g.:
DIY project power amp from a "???" audio magazin "???" - translating wanted
An other advice:
Modern OCR software like
ABBYY FineReader OCR software for text recognition and document conversion with OCR PDF features
is able to understand all languages in the meantime.
So you can convert this jpg file in an text file. In follow you can try to use the google language tools.

P.S.: is it Thai language ?? Which magazine?
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Old 12th December 2012, 11:38 AM   #4
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The file in post #1 is from a kit from a company in Thailand:
Circuit2005
They have an "800W" version also.
Price list is here:
http://prakito.com/Price_files/ampprice.pdf

Last edited by tommy1000; 12th December 2012 at 11:42 AM.
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Old 13th December 2012, 06:59 AM   #5
Shelah is offline Shelah  Zambia
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thanks bobodioulasso for thyose links. i do not know the language it was printed in but what am interested is the bias current.
tommy1000 thanks for your reply. can you help me translate the notes in the projects?
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Old 13th December 2012, 12:08 PM   #6
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I can' tread thailandese though i can see on your document Vr2...... 60/100.
That is 60 to 100 mA per pair set by Vr2
Which is in the right ballpark for these laterals.
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Old 13th December 2012, 07:10 PM   #7
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Yes, the text says to set bias to 60 - 100 mA. Otherwice it is a generel description of the circuit, output power and transistors used. To mount the components at the correct position etc.
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Old 15th December 2012, 08:46 AM   #8
Shelah is offline Shelah  Zambia
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one other thing i wanted to find out. can i use irfp240/9240 as outputs?
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Old 15th December 2012, 11:21 AM   #9
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Not without schematic modification.
The biasing voltage is different for vertical mosfets (IRFP) and laterals.
The temperature co. also are opposite.
The bias diode string will not work for IRFP. A vbe multiplier will be needed.
You should go with another schematic unless you have the skill to design the mod.
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Old 15th December 2012, 12:30 PM   #10
JMFahey is offline JMFahey  Argentina
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Short answer: if you build it , respect the project and do it "by the book".
Now, if you find the original lateral MosFets very expensive (I think so), just look for *another* project.
I looked at their page and they also offer bipolar kits, which must be more reasonably priced.
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