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Old 28th February 2013, 10:55 PM   #391
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Quote:
Originally Posted by apexaudio View Post
This D200 work at +/-80V rail, only 2k2/2W and TIP31C are hot.
It start at very low input signal without any audable noise.
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why twist the coil so little? it's not a T106-2...

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Old 28th February 2013, 11:04 PM   #392
krakow is offline krakow  France
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Originally Posted by suryadi5417 View Post
why twist the coil so little? it's not a T106-2...

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I think that coil come from Behringer.
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Old 1st March 2013, 08:39 AM   #393
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Originally Posted by PetruV View Post
I seen the d500 but its too complex i want something like d200 but 500-700w
You have no expirience in meaking amplifiers, I suggest you to build D200 as your first amplifier and if work...
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Old 1st March 2013, 08:43 AM   #394
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Originally Posted by suryadi5417 View Post
why twist the coil so little? it's not a T106-2...

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It's ferite core with gap from Behringer class D amplifier. Many ferite cores with gap can be use instead T106-2 but with 15-20 turns for 30uH.
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Old 1st March 2013, 10:45 AM   #395
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It's ferite core with gap from Behringer class D amplifier. Many ferite cores with gap can be use instead T106-2 but with 15-20 turns for 30uH.
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Thank You for the explanition sir, i will try using ferite with gap next day.

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Old 1st March 2013, 10:58 AM   #396
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try using IRFP240 to compare with IRF640 with same voltage and coil 51 turns. BTW can BAT 86 instead BAT 85, sir ?
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Old 1st March 2013, 02:32 PM   #397
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Originally Posted by suryadi5417 View Post
try using IRFP240 to compare with IRF640 with same voltage and coil 51 turns. BTW can BAT 86 instead BAT 85, sir ?
Use 1N4148 instead BAT85.
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Old 2nd March 2013, 01:43 PM   #398
PetruV is offline PetruV  Romania
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IRFB4227 be used for 500w in d200?,anything else for even more power?,will they be ok for 2 ohms

Last edited by PetruV; 2nd March 2013 at 01:51 PM.
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Old 2nd March 2013, 03:04 PM   #399
PetruV is offline PetruV  Romania
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Will irfb4227 at 75v work at 2 ohms,that will get me 800w
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Old 2nd March 2013, 03:49 PM   #400
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Will irfb4227 at 75v work at 2 ohms,that will get me 800w
Use IRFB4229
http://www.irf.com/product-info/data...rfb4229pbf.pdf
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