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Class D Switching Power Amplifiers and Power D/A conversion

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Old 12th May 2010, 01:37 PM   #31
ruferto is offline ruferto  Portugal
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hello, i have an 150va 2x60v transf. is it any good for an class d amp. or should throw way. sorry for the question.
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Old 12th May 2010, 11:33 PM   #32
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Quote:
Originally Posted by ezavalla View Post
It looks like it is based very much around an application note.
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Old 13th May 2010, 01:56 AM   #33
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hi diyers
greetings can someone please translate this so i can register
in this diy forumest de suficienciaHalle RT en Ω, RT = 2.7kΩ || 4050Ω (tips: || = Paralelo, Ingrese solo el valo
want to read pages of this amplifier in this diy forum tried to register many
times but cannot understand this part hoping some one can help out

thanking you
andrew lebon
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Old 13th May 2010, 02:39 AM   #34
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You have to enter the parallel resistance for the answer.

For instance, the answer to 2.7kΩ || 4050Ω is 1620.
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Old 13th May 2010, 04:28 PM   #35
qsa is offline qsa  Germany
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Does somebody idea for Short Circuit - Over Current Protection to design ?

cant find anything

To use this circuit without protection is very dangerous
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Old 13th May 2010, 07:46 PM   #36
Andy F is offline Andy F  Spain
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Hi:

On this pdf you can see an standard overcurrent protect implementation using a current sense resistor on the mosfet drain(R37 for channel1,R38 for channel 2). You must recalculate the value for your design.
http://www.irf.com/technical-info/re.../iraudamp1.pdf
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Old 14th May 2010, 02:32 AM   #37
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hi eduardo tagle
greetings sorry for all the confusion of posting your schematic
is it possible to make this lovely amplifier with schematic posted in full file
1 half watt 1% resistors very difficult to obtain can correct values of normal 5%
resitors be used same is case for 330pf mica have 1000volt ceramic 330pf
will amp work
2 is pcb single or double sided can understand bottom layer of pcb but cannot
understand in file is small ic pads component pads what r they for
hoping you can help to make this amplifier possible
thanking you
andrew lebon
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Old 14th May 2010, 02:29 PM   #38
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Nice amplifier i can tell from the simplicity in the design as well as the component selection.

Its about time someone posted a truly simple DIY self osc amplifier the output power is just what i was looking for my home sub-woofer

honestly i don't have the equipment or the time to gain knowledge designing amplifiers in this category, simulations was the the further est vie came but intuitive non the less

Current limiting is still missing but a good exercise on behave of the person adapting the amplifier for hes or hers application, seriously how lazy can one get unless you ripping someone else work and selling it which i feel is already taking place judging from the silly questions.


i think i can build a new looking smd version of this with even smaller components and a nice pcb for my personal usage

A big thank you to the designer! good principle keeping it simple
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Old 15th May 2010, 03:23 AM   #39
savu is offline savu  Romania
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Quote:
Originally Posted by Reactance View Post
i think i can build a new looking smd version of this with even smaller components and a nice pcb for my personal usage

A big thank you to the designer! good principle keeping it simple
Hello Reactance,

I want to design a SMD version too...
I will post it on this thread as soon as it's done.
please post yours when is donne because I want to see how you aproach this issue.
Class D pcb layouts give me headakes and I want to study others people work to see where I am goin wrong.

Best regards,

Savu Silviu
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Old 15th May 2010, 06:27 AM   #40
rezamir is offline rezamir  Iran
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Hi all
m1 & m2 After a few seconds is too hot
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