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Old 22nd August 2012, 08:54 AM   #2401
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Andrewlebon, Can you please post the schematic of DETEX 1500W PCB??
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Old 22nd August 2012, 10:16 AM   #2402
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Hi Prasanna
greetings there are no schematics just make pcb put components and enjoy
the sound ONLY if you have the proper core make it otherwise
warm regards
andrew lebon
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Old 22nd August 2012, 10:51 AM   #2403
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andrewlebron, you have pcb Class D bridges.
warm greetings.
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Old 22nd August 2012, 12:06 PM   #2404
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Hi Jcoelhogsia
greetings no i dont have bridges pcb already d class is so powerful and
bridges only good for 8 ohms load
warm regards
andrew lebon
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Old 23rd August 2012, 01:07 AM   #2405
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UCD Protection against short circuit at output speaker. - YouTube
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Old 23rd August 2012, 01:53 AM   #2406
CPX is offline CPX  Romania
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Do you use sensing tranformer or resistor?
Do you use di/dt limiting inductor or not?
Have you tested this protection with short on output and then feeding high frequency sinusoidal signal?

Last edited by CPX; 23rd August 2012 at 01:56 AM.
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Old 23rd August 2012, 06:13 AM   #2407
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Default About Core

Sir, I have these core from old Computer SMPS. the size of core u can see, i wanted to know that can i use it with IRS1500D or for irs900D?

Quote:
Originally Posted by andrewlebon View Post
Hi Prasanna
greetings there are no schematics just make pcb put components and enjoy
the sound ONLY if you have the proper core make it otherwise
warm regards
andrew lebon
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File Type: jpg DSC_0099.jpg (127.1 KB, 980 views)
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Old 23rd August 2012, 06:39 AM   #2408
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NO these cores wont work use SENDUST material cores
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Old 23rd August 2012, 07:15 AM   #2409
stewin is offline stewin  Kenya
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Quote:
Originally Posted by sandeep kayarkar View Post
Sir, I have these core from old Computer SMPS. the size of core u can see, i wanted to know that can i use it with IRS1500D or for irs900D?
they will certainly be hot as a soldering gun, but if you have no option, use a hack saw to cut 1mm gap which will atleast help.

the best thing is to use the EE or the EI core from that PC
>>>> coil 24turns,use a piece of old CD to make 1mm gap
refer to previous posts, there're even instructions by other DIYers on how to go about it
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Old 23rd August 2012, 07:28 AM   #2410
stewin is offline stewin  Kenya
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Quote:
Originally Posted by CPX View Post
Do you use sensing tranformer or resistor?
Do you use di/dt limiting inductor or not?
Have you tested this protection with short on output and then feeding high frequency sinusoidal signal?
you can incorporate the OCP protection with any UCD or non UCD class D amps
The schema and the artwork are in the links below:

diysmps

diysmps
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