No. Ferrite cores are not good as the output inductor here. It will heat up like a burning coal. Just try it and have fun
T106-2, T157-2 or any -2 iron powder cores are ideal.
T106-2
regards
Thank's for the reply sir.
Regards
@ IRSound,
Will you be kind enough to share your pcb bottom copper for etching...my acquired film caps does not fit on Sir Miles pcb artwork..
I think we are using the same type of film caps. Your D200 is now working, am I right? Too bad my desktop failed last Sunday..hard disk failure. I can't work on my CAD files 
Regards!
Will you be kind enough to share your pcb bottom copper for etching...my acquired film caps does not fit on Sir Miles pcb artwork..
I think we are using the same type of film caps. Your D200 is now working, am I right? Too bad my desktop failed last Sunday..hard disk failure. I can't work on my CAD files Regards!
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not enough space for those caps, same problem with me....@ IRSound,
Will you be kind enough to share your pcb bottom copper for etching...my acquired film caps does not fit on Sir Miles pcb artwork..
Regards!
Attachments
not enough space for those caps, same problem with me....
Hi! Suryadi,
Yes it is going to be a problem when the only film caps you can find in your place are those bigger film caps (same here..
), mine are rated 275v, polyester types are also available and are rated at 250v but still, the same bigger size as with those 275v film types Sir Mile,
Wimas are hard to find here in my place and if not they are expensive, I guess the only option is to design a new pcb to accomodate these bigger caps we had..
Regards!
IRSound,
That is OK man..no problem!
I am liking your design though...
D
Deleted member 148505
Hi abetir,
I am using this one for my class D amp output filter. 470nf rated at 400V.
When I received it, I doubted if it is really rated for 400V because of its small size
I used 100nf 250V for zobel cap.
https://philippines.rs-online.com/web/p/polyester-film-capacitors/4764180/
I am using this one for my class D amp output filter. 470nf rated at 400V.
When I received it, I doubted if it is really rated for 400V because of its small size
I used 100nf 250V for zobel cap.
https://philippines.rs-online.com/web/p/polyester-film-capacitors/4764180/
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Hi Les,
I'm still stuck..can't work on this amp...there's always a problem on parts size..
I actually wanted to use Litz wire for the inductor, said to be designed to reduce skin effect and proximity losses in conductors. Gerry Morales uses this type of wire on his Class D builds.
Regards!
I'm still stuck..can't work on this amp...there's always a problem on parts size..
I actually wanted to use Litz wire for the inductor, said to be designed to reduce skin effect and proximity losses in conductors. Gerry Morales uses this type of wire on his Class D builds.
Regards!
Attachments
0.05 Ohm in O/C protect fets from over 12A current, with 0.1 Ohm O/C current is only 6A.
Dear Mile,
Nice to see that you are working on the new PCB. But I still see there's no space for a heatsink on outputs.
When I turn off D200, it will give me a funny noise (like a siren going from high to low frequency) until rail caps discharge. Any suggestions please ?
Thanks
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