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Old 26th November 2012, 10:57 AM   #2961
akraj is offline akraj  Bangladesh
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Quote:
Originally Posted by manojtm View Post
Hi Hadi,

Thanks for pointing errors(rev. 1.1) I will re-check the PCB. and get back to you

Yes you can use 106-2. use only single winding.

T106-2 you need 80Turns for @65uH



I think your winding polarity reversed.

Regards
MANOJ
Hi Manoj:

I also given your file (ver 1.1) to make PCB. Should I halt that untill you correct the design- if needed?

Thanks
Raj
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Old 26th November 2012, 12:01 PM   #2962
manojtm is offline manojtm  India
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Hi Hadi,

sorry not 80Turns its 70Turns typing mistake

Regards
MANOJ
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Old 26th November 2012, 12:46 PM   #2963
manojtm is offline manojtm  India
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Hi Hadi,

AUD600-Rev1.1 there is nothing see any error on PCB.cross checked every track,only i changed 2x 47k 0.25W replaced to 1x 100K 1W and 1k 1% changed to 1K trim pot and added temp switch provisions
For this trim pot do not set to zero Ohms (shorted) minimum value is @200 Ohm.And first setup is, trim pot set to 1K value. other wise remove trim pot and fix a 1k 1% resistor.

I think you are done a mistake something has happened may be component value change or track shorted etc... re-check again

Regards
MANOJ
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Old 26th November 2012, 01:21 PM   #2964
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Hi
you change 10uf 100v cap with 1uf 100v too and some chage too near ir ic
PLZ wait for stewin amp
if he have like me error then must chek again
i dont use trimer
i use 1k 1% and 1k 1w
i must send to you my picture
i use 80 turn around T106-2 and conect the filter to board
i dont here like this before and every thing is good and cold.
not heat any things
the sound is so cleare and very good
i must say very very very thanks sir manoj
i like to have your new vertion
can you please send it to my email ?
thanks dear friend
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Old 27th November 2012, 07:33 AM   #2965
manojtm is offline manojtm  India
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Quote:
you change 10uf 100v cap with 1uf 100v too and some chage too near ir ic
HI HADI,

YES I AGREE THAT, BUT NOTHING WILL HAPPEN WHEN YOU CHANGE THE VALUE 10uF/100V TO 1uF/100V THIS IS VB SUPPLY FILTER OF IR2110 FOR USING HIGH SUPPLY ie.+75V OR MORE YOU NEED TO REDUCE THE VALUE THAT IS WHY I REDUCED TO 1uF/100V.

NOW YOU CAN INCREASE THE FREQ. TO 300KHZ AND TEST IT FOR THIS FILTER YOU REDUCE TO 47uH.


REGARDS
MANOJ
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Old 27th November 2012, 11:33 AM   #2966
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Hi sir manoj
IRFP250 work in 250 KHZ
do you want use it for 300 KHZ ?
why ?
how can i creat 47uH with T106-2 ?
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Old 27th November 2012, 01:11 PM   #2967
manojtm is offline manojtm  India
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Hi hadi,

irfp250 you can use up to 330khz

its for only test, and the quality also increase

regards
manoj
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Old 28th November 2012, 03:34 AM   #2968
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how can i creat 47uH filter ?
how much turn aroud the T106-2 with 0.8mm wire ?
what about the resistor value for change the FREQ 300KHZ ?
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Old 28th November 2012, 04:25 AM   #2969
manojtm is offline manojtm  India
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Quote:
how can i creat 47uH filter ?
how much turn aroud the T106-2 with 0.8mm wire ?
what about the resistor value for change the FREQ 300KHZ ?
Hi hadi,

T106-2 winding Calcultion (uH = n^2 x Al /1000) so 47uH = n^2 x 13.5 /1000

59 Turns for 47uH

resistor, i don't know the correct value(don't remember). 820 Ohms or 680 Ohms

Regards
MANOJ
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Old 28th November 2012, 09:28 AM   #2970
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thanks sir manoj
i need a preamp for your amp
do you have any sugestion ?
i need to reduce noise in your amp
thanks
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