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Old 11th December 2010, 04:11 PM   #431
emmi is offline emmi  India
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does this amp work for continues program that is for listening songs ultimately
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Old 11th December 2010, 07:23 PM   #432
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Quote:
Originally Posted by emmi View Post
does this amp work for continues program that is for listening songs ultimately
I don't understand this question.
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Old 12th December 2010, 03:55 AM   #433
emmi is offline emmi  India
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I don't understand this question.
does this amp work for PA applications?
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Old 12th December 2010, 11:33 AM   #434
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does this amp work for PA applications?
This is amp for 'Home Audio', but can be use for PA applications with short circuit protection from 'DC Servo Mosfet Amp' PSU.
Regards
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Old 13th December 2010, 12:52 PM   #435
emmi is offline emmi  India
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what will be the maximum output power if the rail voltage is +/-75 and how much load can i put on it
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Old 13th December 2010, 01:14 PM   #436
AndrewT is offline AndrewT  Scotland
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expect a +-75Vdc supply to sag between 5V and 10V depending on how you build the PSU.
Expect the amplifier to drop/lose another 5V before it feeds the output.
Combining these two losses, expect ~60Vpk at the output.

P = Vpk^2 / Rload / 2

225W into 8r0, 450W into 4r0.
Work all the other impedances out from this model.

If you want 225W into 8r0 from it, then expect to provide 900W of mosFET output stage or 1200W of BJT output stage.
If you want/need to drive 4ohms speaker then double the wattage of the output stage.
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Last edited by AndrewT; 13th December 2010 at 01:17 PM.
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Old 13th December 2010, 02:36 PM   #437
emmi is offline emmi  India
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Quote:
Originally Posted by AndrewT View Post
expect a +-75Vdc supply to sag between 5V and 10V depending on how you build the PSU.
Expect the amplifier to drop/lose another 5V before it feeds the output.
Combining these two losses, expect ~60Vpk at the output.

P = Vpk^2 / Rload / 2

225W into 8r0, 450W into 4r0.
Work all the other impedances out from this model.

If you want 225W into 8r0 from it, then expect to provide 900W of mosFET output stage or 1200W of BJT output stage.
If you want/need to drive 4ohms speaker then double the wattage of the output stage.
why do we need 900watt of mosfet output stage for 225watt into 8 ohms

i didn't understand your answer
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Old 13th December 2010, 04:24 PM   #438
AndrewT is offline AndrewT  Scotland
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I think you understand my statement.
I also think you don't like my statement.
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regards Andrew T.
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Old 13th December 2010, 05:24 PM   #439
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Hello
how do I print the pcb layout correctly formatted
sincerely
svsommer
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Old 14th December 2010, 01:14 PM   #440
emmi is offline emmi  India
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Quote:
Originally Posted by AndrewT View Post
I think you understand my statement.
I also think you don't like my statement.
why do you think so
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