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Old 15th August 2012, 06:35 AM   #2271
paskal9 is offline paskal9  Malaysia
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Quote:
Originally Posted by sweetperfume View Post
is the resistor error only prob with this pcb or something else also...and can i replace cd4049 with 4050????
the only way of knowing is for someone with better experience with class d to etch the pcb, build and test the amp.

the irs2000/3000d pcb didn't even come with a proper schematic so probably it would be even more helpful if someone would be good enough to trace the pcb and make a schematic out of it. that would allow people with better experience to browse and check for errors as it's quite hard to check for design error just by looking at the pcb traces.

and no you cannot replace it with cd4050 as you need an inverter.
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Old 15th August 2012, 06:54 AM   #2272
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I have made rs900. now it has a problem. one the Mosfets isn't driven and it's working by just one of these mosfets. both of them are ok. what to do?
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Old 15th August 2012, 06:57 AM   #2273
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• CD4049UB Inverting
• CD4050B Non-Inverting
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Old 15th August 2012, 07:35 AM   #2274
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Originally Posted by ionutzxpo View Post
• CD4049UB Inverting
• CD4050B Non-Inverting
then can it be used for this amp(cd4050)
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Old 15th August 2012, 07:38 AM   #2275
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Originally Posted by irvynejay View Post

plz dude post your schematics...need to know the reasons why i'm not getting the things worked up with my pcd
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Old 15th August 2012, 07:45 AM   #2276
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Default DETEX AUDIO DC PROTECT

Hi Nano
greetings i made this DETEX dc protector same one you use can you please check if its ok MPSA13 darlington transistor any substitute for it
warm regards
andrew lebon
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Old 15th August 2012, 09:02 AM   #2277
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i had almost connected every part i guess so with irs3000d.....i would be powering it with +/-40volts.....plz give any suggestions if i would have to check out with anything serious with this pcb and schematic
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Old 15th August 2012, 11:19 AM   #2278
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Quote:
Originally Posted by sweetperfume View Post
is the resistor error only prob with this pcb or something else also...and can i replace cd4049 with 4050????
No , CD4050 is Non-inverting , CD4049 is Inverting Buffer .
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Old 15th August 2012, 11:22 AM   #2279
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Originally Posted by thienchay View Post
No , CD4050 is Non-inverting , CD4049 is Inverting Buffer .
is there any substitute for cd4049 as i dont have it at my place...any perfect one with same pin out plz help me out...i need to test the design today itself...
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Old 15th August 2012, 11:24 AM   #2280
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Quote:
Originally Posted by sweetperfume View Post
plz dude post your schematics...need to know the reasons why i'm not getting the things worked up with my pcd

i already posted i don't have schematic,, that's the only file i have i made the amp with out schematic
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