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Old 6th June 2010, 04:11 PM   #101
rezamir is offline rezamir  Iran
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hi opor
Voltage Power Supply is how much?
best regards
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Old 6th June 2010, 04:26 PM   #102
opor is offline opor  Thailand
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My supply rail is +-68V . Here is my schematic . I will post some picture ASAP.
Attached Files
File Type: pdf My IR2110UcD update on 6_6_10.pdf (17.0 KB, 2354 views)
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Old 6th June 2010, 06:36 PM   #103
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hi to all!!! at first when i build the amp ,the IR2110 was FAKE! i bought 2 off them both FAKE! after i bought the third IR2110 the amp came to life.....the sound is just amazing...very clear ...i use IRFP260 they are cold ....the output coil is hot..i use a toroid from an old pc power supply ....but even with that the amp works very well and sunds great...(sorry for my english)
http://s957.photobucket.com/albums/a...6062010005.flv

Last edited by ionutzxpo; 6th June 2010 at 06:56 PM.
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Old 7th June 2010, 07:04 AM   #104
rezamir is offline rezamir  Iran
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hi dear
what voltage rails are you using
thanking you
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Old 7th June 2010, 07:14 AM   #105
savu is offline savu  Romania
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Quote:
Originally Posted by rezamir View Post
hi dear
what voltage rails are you using
thanking you
He uses +/- 28Vdc for the moment for tests.

After all is tweaked and the SMPS is ready we will connect it at +/- 95Vdc.

Regards,

Savu Silviu
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Old 7th June 2010, 12:02 PM   #106
qsa is offline qsa  Germany
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Quote:
Originally Posted by savu View Post
He uses +/- 28Vdc for the moment for tests.

After all is tweaked and the SMPS is ready we will connect it at +/- 95Vdc.

Regards,

Savu Silviu

do you have any idea how to add effectice short circuit and overcurrent protection..?

I think this is important thing
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Old 7th June 2010, 12:52 PM   #107
rezamir is offline rezamir  Iran
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hi all
I made this Amplifier
Sound is good
Mosfet is not hot,but the output coil is hot
My supply rail is +-68V
do you have a good idea for this problem?
sorry for my english
best regard
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Old 7th June 2010, 06:53 PM   #108
savu is offline savu  Romania
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Hi Razamir,

Use T 106-2 micormetals iron powder core for the output inductor.

Regards,

Savu Silviu
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Old 7th June 2010, 07:45 PM   #109
ejtagle is offline ejtagle  Argentina
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Just to give you some ideas... Using a 555 monostable, some transistors (or perhaps, a plan comparator, you can easily use the shutdown input of the IR211x to implement an overcurrent/short circuit protection protection
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Old 7th June 2010, 10:33 PM   #110
qsa is offline qsa  Germany
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Quote:
Originally Posted by ejtagle View Post
Just to give you some ideas... Using a 555 monostable, some transistors (or perhaps, a plan comparator, you can easily use the shutdown input of the IR211x to implement an overcurrent/short circuit protection protection
can you offer schematic ?

its new for me ....
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