Rakesh,
Should be fine. You will have around 40V rails, which is fairly high for a single pair of outputs, the drivers will both be fine but I'd be tempted to use a faster transistor for the voltage amp - again a TO126, something like a BF469 would do nicely.
Cheers,
Hugh
Should be fine. You will have around 40V rails, which is fairly high for a single pair of outputs, the drivers will both be fine but I'd be tempted to use a faster transistor for the voltage amp - again a TO126, something like a BF469 would do nicely.
Cheers,
Hugh
Hello Rakesh, as Hugh says, good work, however......
I would shift the speaker return to 5mm above the Com connection and put the 0.1 decoupling caps just above the diodes.
Ditch the led's and make the earth land wider so that the input ground and the C1 10uF/63V cap can have their individual earth connections - the ground for that NFB shunt cap is critical and should not be tangled with any other earth currents.
Also the input is shorted to ground !.
Also shift the output connection up to the middle of the land, and the R5 connection down.
Keep up the good work,
Eric.
I would shift the speaker return to 5mm above the Com connection and put the 0.1 decoupling caps just above the diodes.
Ditch the led's and make the earth land wider so that the input ground and the C1 10uF/63V cap can have their individual earth connections - the ground for that NFB shunt cap is critical and should not be tangled with any other earth currents.
Also the input is shorted to ground !.
Also shift the output connection up to the middle of the land, and the R5 connection down.
Keep up the good work,
Eric.
Many thanks ..
As per transistor for the voltage amp, initially start with BD139 and will replace it with BF469.
will update layout soon..
Rakesh Sharma
As per transistor for the voltage amp, initially start with BD139 and will replace it with BF469.
will update layout soon..
Rakesh Sharma
hi,
Can i use this with my 2x24vac 15 amps transformer?
How many digi-125 amplifier can be connected?
i have 10 pairs of 4700 uf/50v
Do i need to put a dc protect in each amp?
I planning to make a multi channel system..
thanks.
Can i use this with my 2x24vac 15 amps transformer?
How many digi-125 amplifier can be connected?
i have 10 pairs of 4700 uf/50v
Do i need to put a dc protect in each amp?
I planning to make a multi channel system..
thanks.
Thank you very much Sir.
All parts are in, now first will make one amp and test it .. then make five more for my 6 Channal amp build.
All parts are in, now first will make one amp and test it .. then make five more for my 6 Channal amp build.
thanks rakesh... i will try to build one too.
maybe my 15 amps transformer will be alright.. with 5 channels
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Nice to hear that Sir,,
Are you planning to use single or multiple PSU ..
I am using one PSU per AMP.... made on same PCB..
Are you planning to use single or multiple PSU ..
I am using one PSU per AMP.... made on same PCB..
sir i'm planning to use 1 psu for all the amps. but is it ok with same transformer?
sir what is the size of your pcb?
I think its ok to power all amp with one single transformer and multipal PSU Circuit.. Until and unless tranformer have that much juice..
PCB Size = 7cm x 5.5cm
Work under progress
Attachments
Tested the amp..
Audio source.. PC -Asus Xoner DX2 sound card...
Very nice and rich sound quality ... I was missing this type of musical sound...
Thanks for sharing a simple and quality amp...
Rakesh Sharma
Audio source.. PC -Asus Xoner DX2 sound card...
Very nice and rich sound quality ... I was missing this type of musical sound...
Thanks for sharing a simple and quality amp...
Rakesh Sharma
