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Old 24th October 2012, 08:37 AM   #2711
stewin is offline stewin  Kenya
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4k5 guys

hi guys here is the best i could come up with . i hope the author can post the original schema and detailed pcb files but it works.

AMPLIFICADOR DIGITAL IRS 4K5 - YouTube
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Old 24th October 2012, 05:46 PM   #2712
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Hi Stewin
greetings YES it works the pcb with bd139 bd140 is of ht forums thats why no pcb files if you are planning 3 pair fet amp CORE IS VITAL dont try gapped core wont work at high volume core saturation personally i would go for zetex trs in totem maybe this week i finish pcb protection included but totem would be smd devices
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andrew lebon
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Old 24th October 2012, 06:34 PM   #2713
stewin is offline stewin  Kenya
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thanks michelle but i have no option but to use etd cores.
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Old 24th October 2012, 07:04 PM   #2714
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Hello Michelle and Stewin will this type of ee core will work?i'll removed this from an smps,cannot identify it.
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Old 24th October 2012, 07:50 PM   #2715
Pafi is offline Pafi  Hungary
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Quote:
Originally Posted by don2007ksa View Post
Hello Michelle and Stewin will this type of ee core will work?i'll removed this from an smps,cannot identify it.
As what? Push-pull transformer? No. Output filter? Yes. Air-gap!
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Old 24th October 2012, 08:24 PM   #2716
stewin is offline stewin  Kenya
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thanks pafi for answering. why can,t it work in smps?
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Old 25th October 2012, 05:40 AM   #2717
manojtm is offline manojtm  India
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Hi stewin,

for class d filter use ETD29 core with 1mm air gap( supply +75v -75v)

PAFI,

are you recommended this core???

Regards
MANOJ
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Old 25th October 2012, 05:46 AM   #2718
manojtm is offline manojtm  India
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Hi ALL

I am not recommending for MOSFET Paralleled configuration(x3 or above) use with recommended supply voltage with bridge configuration.

Regards
MANOJ
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Old 25th October 2012, 06:39 AM   #2719
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Hi Pafi i'm going to use this for IRS3000 (output inductor) is it possible?thank's
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Old 25th October 2012, 07:03 AM   #2720
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Quote:
Originally Posted by stewin View Post
thanks pafi for answering. why can,t it work in smps?
It depends on the type of SMPS. Push-pull, half-bridge and full bridge dc-dc converters require an ungapped core, whereas a flyback type requires a gapped core.
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