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Old 9th June 2012, 04:10 PM   #1981
CPX is offline CPX  Romania
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manojtm:
Yellow/white cores are for dc,are not good for class D. I do not remember your pcb and why i said it is bad,but thd measurments are a must especialy if you do not have a sensitive ear,with music i can not hear alot of distorsions.
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Old 9th June 2012, 04:12 PM   #1982
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no this one has lm311 ne555 and bd136 for faster gate discharge
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andrew lebon
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Old 9th June 2012, 04:16 PM   #1983
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Default triell 3200 watts ucd pcb

well i will post pcb after i make it and test it
warm regards
andrew lebon
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File Type: jpg amplificador digital de 3200 wats.jpg (297.3 KB, 921 views)
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Old 9th June 2012, 04:23 PM   #1984
SNY is offline SNY  Hungary
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Default pcb

Quote:
Originally Posted by andrewlebon View Post
well i will post pcb after i make it and test it
warm regards
andrew lebon
Are you sure the board works well? I see a huge ground loop .....
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File Type: jpg amplificador digital de 3200 wats 08 06 2012.jpg (37.2 KB, 853 views)
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Old 9th June 2012, 04:26 PM   #1985
manojtm is online now manojtm  India
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Quote:
hi manojtm
greetings how does your yellow core not heat just finished my dclass 3 pairs
90n20 have to use 2 cores together sendust coolmu cores yellow cores dont work
hi andrew

i cannot explain in this thread. practically i made like 1.core temp reduced 2.Efficiency increased 3.DC offset locked to below 25mV 4.reduced EMI 5.MOSFET temp. reduced without heatsink it will work perfectly.now i feel 42V supply 3x MOSFET it produced more than 150W louder and it can handle 14A with cool, I tested 1.6E load mosfet temp only 48deg.c for 15min.

RGDS
Manoj
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Old 9th June 2012, 04:27 PM   #1986
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hi sny
greetings well this triell pcb has not been tested but it sells for 400$
well single sided pcb if well designed is not a problem for dclass amps my IR211O
WITH 3 PAIRS mosfets and zetex gate driver transistors i have no noise issues the ucd
amp has noise issues when placed in a cabinet ucd1200
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andrew lebon
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Old 9th June 2012, 04:50 PM   #1987
manojtm is online now manojtm  India
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cpx

i will check THD but it will take time

RGDS
Manoj
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Old 9th June 2012, 06:13 PM   #1988
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how much current does it consume for producing 400watts of real power?????
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Old 11th June 2012, 07:55 AM   #1989
manojtm is online now manojtm  India
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Hi all

I said my amp produced more than(150w)196W on 42V supply (84/3)^2/4ohm =196W
Half side current draw is 4.6A,{196x3=588W so current 14A}

RGDS
MANOJ
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Old 11th June 2012, 12:06 PM   #1990
CPX is offline CPX  Romania
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Quote:
Originally Posted by manojtm View Post
cpx

i will check THD but it will take time

RGDS
Manoj
Ok..tell me if you need help in doing them so i can guide you.
I think what you have there are yellow cores without white,probably material 6 .
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