Class D Amp with LM566,LM393 and 2XIRF530 - Page 38

suryadi5417 · 22nd February 2013, 06:44 PM

Quote:

Originally Posted by apexaudio

Nice work, coil isn't rewind?

yes sir, the coil is not rewind, i have 1mm wire, how many turn should i wrap the core ofthis kind ? Regards.
( sorry, i,m using google translate to wrote)

apexaudio · 22nd February 2013, 08:11 PM

Quote:

Originally Posted by suryadi5417

at last my D200 is singing.... using coil from computer psu and not hot just warm, i,m HAPPY now... YESSSS

What is rail voltage on your amp?

manojtm · 23rd February 2013, 04:30 AM

Hi mile,

did you check D200 @75V rail??
is it start(oscillate)@very low signal input without noise???
feedback resistor 4k7 hot???

Regards
MANOJ

apexaudio · 06:58 AM

Quote:

Originally Posted by manojtm

Hi mile,

did you check D200 @75V rail??
is it start(oscillate)@very low signal input without noise???
feedback resistor 4k7 hot???

Regards
MANOJ

This D200 work at +/-80V rail, only 2k2/2W and TIP31C are hot.
It start at very low input signal without any audable noise.
Regards

manojtm · 23rd February 2013, 08:10 AM

Hi Mile,

thank you

Regadars
MANOJ

manojtm · 23rd February 2013, 08:34 AM

Hi mile,

actually Mackie SRM450 using 4k7/2W series with 47K/0.25W for feedback and it will HOT little @35 degree.

Regards
MANOJ

apexaudio · 23rd February 2013, 09:41 AM

Quote:

Originally Posted by manojtm

Hi mile,

actually Mackie SRM450 using 4k7/2W series with 47K/0.25W for feedback and it will HOT little @35 degree.

Regards
MANOJ

For me over 60 degree is warm and over 90 degree is hot.
Regards

apexaudio · 23rd February 2013, 02:17 PM

With 3X1k5/1W instead 4k7 and 4k7/2W instead 2k2/2W there will be no heat problem at +/-75V rail

suryadi5417 · 23rd February 2013, 02:37 PM

Quote:

Originally Posted by apexaudio

What is rail voltage on your amp?

just for testing i'm using 42v dc.

suryadi5417 · 23rd February 2013, 02:43 PM

Quote:

Originally Posted by krakow

Hello,

what is the brand of the 0.47µF and 0.22µF capacitors?
Because my seller don't sell WIMA capacitors.

Scuse my Frenchy English

Thanks

my caps 0,47uF and 0,22uF with no brand, i think from china.
Regards

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23rd February 2013, 04:30 AM	#373
manojtm diyAudio Member Join Date: Aug 2008	Hi mile, did you check D200 @75V rail?? is it start(oscillate)@very low signal input without noise??? feedback resistor 4k7 hot??? Regards MANOJ

23rd February 2013, 08:10 AM	#375
manojtm diyAudio Member Join Date: Aug 2008	Hi Mile, thank you Regadars MANOJ

23rd February 2013, 08:34 AM	#376
manojtm diyAudio Member Join Date: Aug 2008	Hi mile, actually Mackie SRM450 using 4k7/2W series with 47K/0.25W for feedback and it will HOT little @35 degree. Regards MANOJ