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Old 19th November 2012, 09:04 AM   #2891
manojtm is offline manojtm  India
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Hi Hadi,

Power AUD600 PCB photo shows, you are fixed a 0.22 ohm 2W x 3Nos. it is 0.1 ohm 2W x 3nos.(=0.04 Ohm)or 0.1 ohm 3W x 2Nos.(=0.05 Ohm)and AUD600 PCB MOSFET you fixed on top it is fixed on bottom for easy mounting on heat-sink.
do not connect 56K resistor near tlo71 ic and 4148 diode and MUR1560 for first setup.connect the power check freq.(@250KHz){with speaker 4/8 Ohm} and DC offset voltage(max. 50mv)
everything working fine then you connect 56K and again check DC Offset voltage.

Regards
Manoj

Last edited by manojtm; 19th November 2012 at 09:19 AM.
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Old 19th November 2012, 04:11 PM   #2892
stewin is offline stewin  Kenya
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Quote:
Originally Posted by manojtm View Post
Hi, stewin,

using 27V supply 6A for 2 ohms 75V supply 16.6A for 2 ohms and 88V supply 19.5A for 2 ohms so you should adj. the sensing components
Over current (I) = 550mv/0.04 Ohm x 1k5+1k/1k = 34A (not for IRFP250 its for IRFB4227)
so you need to adjust resistor value to get 23A for peak current(75V supply) and 27A for 88V supply.
I = 13.75 x 1.5K+2.2K/2.2K = 23A change resistor value 1K to 2.2K to set 23A and 1K to 1.5K to set 27A
and for low supply like 27v only connect resistor 1.5K OC will be @13A

Regards
Manoj
thanks manoj i am using irfp260 i will decide on the voltage once i finish with the pcb. thanks for support .
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Old 19th November 2012, 04:36 PM   #2893
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thanks sir manoj
how can i findout how much is dc offset voltage ?
i do not know how and where i must conect the voltmeter for findout amount DC offset.
i am wating for 1K 1% resistor
this amp is for test now
i must change your pcb beacuse my ETD29 is sleeping form not standing and i will want to munting mosfet in top and conect a heatsink to them.
near TL071 we have 2 number off 4148. you mean i must disconect them from board befor test the amp ?
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Old 19th November 2012, 10:57 PM   #2894
stewin is offline stewin  Kenya
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hi manoj thanks for replies . i was just wondering are these lay files correct for the new amp aud600??

ucd 25 watts to 1200 watts using 2 mosfets

http://www.diyaudio.com/forums/attac...ets-aud600.zip

Last edited by stewin; 19th November 2012 at 11:02 PM.
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Old 20th November 2012, 03:37 AM   #2895
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Default irs1500 problem

hi every one,
Greetings,
irs1500 problem i check with out speaker connection signal led is glowing when signal is give, then i will connect the speaker the signal led is glow all time and no output what is the problem?
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Old 20th November 2012, 05:21 AM   #2896
manojtm is offline manojtm  India
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Quote:
near TL071 we have 2 number off 4148. you mean i must disconect them from board befor test the amp ?
Hi Hadi,

only 56K resistor and MUR1560

connect SPK and GND for measure the DC offset voltage

regards
MANOJ

Last edited by manojtm; 20th November 2012 at 05:27 AM.
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Old 20th November 2012, 05:25 AM   #2897
manojtm is offline manojtm  India
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Quote:
hi manoj thanks for replies . i was just wondering are these lay files correct for the new amp aud600??

ucd 25 watts to 1200 watts using 2 mosfets

http://www.diyaudio.com/forums/attac...ets-aud600.zip
Hi Stewin,

yes but some components and tracks are changed you can edit/compare with new aud600

regards
MANOJ
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Old 20th November 2012, 06:53 AM   #2898
manojtm is offline manojtm  India
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Hi all

FDP51N25 450KHz switching support replace IRFP260 with this.

Regards
MANOJ
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Old 20th November 2012, 07:26 AM   #2899
akraj is offline akraj  Bangladesh
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Thumbs up AUD 600 1.2

Hi Monoj:

Can you please share your Latest version of AUD600 AMP files? I would like to make one for me

Thanks in advance for your contribution.

Raj
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Old 20th November 2012, 07:30 AM   #2900
manojtm is offline manojtm  India
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Quote:
Can you please share your Latest version of AUD600 AMP files? I would like to make one for me
Hi Raj,

Pls wait, i will do for all diys

Regards
MANOJ
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