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Chip Amps Amplifiers based on integrated circuits

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Old 16th October 2011, 11:52 PM   #1
srinath is offline srinath  United States
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Default Is there a chip amp tha twill run @ 110v

I am looking to build something like a 2000 watt subwoofer amp pushing 2 15's in a home made cabinet.
The hardest part seems to be to find a transformer that will supply 2000w at the 40-60v the chip amp needs.
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I am wondering if there is a chip amp kit where I can use the 110 straight on.

I am using an equipment power/conditioner supply that currently is a 10000w capacity, and I may get a second one if its full to capacity as well as put fuses etc to prevent big blow up's with lightining strikes etc.

Thanks.
Srinath.
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Old 17th October 2011, 12:06 AM   #2
jcx is offline jcx  United States
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any discussion of direct power line use is Prohibited here - it is simply UNSAFE

get a transformer - then there are chip amps that can be paralleled and bridged for 200 W output

even then the highest supply V cheap option - the TDA7293 can only take 100 V between Vsupply pins
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Old 17th October 2011, 12:29 AM   #3
N-Brock is offline N-Brock  United States
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Antek has several 1500VA transformers in that voltage range and 1500w pre-made power supplies.
Antek - Your reliable source of transformers, power supplies, and more.

Good luck,
Nelson
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Old 17th October 2011, 02:18 AM   #4
srinath is offline srinath  United States
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Default 200 va

Quote:
Originally Posted by jcx View Post
any discussion of direct power line use is Prohibited here - it is simply UNSAFE

get a transformer - then there are chip amps that can be paralleled and bridged for 200 W output

even then the highest supply V cheap option - the TDA7293 can only take 100 V between Vsupply pins
Not 200w, 2000w. I'll look at that tda 7293.
Cool.
Srinath
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Old 17th October 2011, 06:06 AM   #5
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2kW from a chipamp is impossible unless you run many of them in parallel - and even then that power will only be achievable on a very low impedance load (certainly lower than 2 ohms). You need a discrete design.
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Old 17th October 2011, 06:22 AM   #6
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I think the only devices even close to being a "chipamp" that will get you to that power level would be something like the LME49830/LME49811/LME49810.
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Old 17th October 2011, 07:14 AM   #7
UrSv is offline UrSv  Sweden
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Why not a Cirrus PA52. It does 200 V with 40 A continous out (80 A peak). Could be a good candidate?
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Old 17th October 2011, 07:36 AM   #8
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Why not a Cirrus PA52. It does 200 V with 40 A continous out (80 A peak). Could be a good candidate?
Yeah, that's practical. A chipamp made out of a >$800 power op-amp? And that would only be one channel!
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Old 17th October 2011, 08:19 AM   #9
UrSv is offline UrSv  Sweden
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Yeah, that's practical. A chipamp made out of a >$800 power op-amp? And that would only be one channel!
Price was not part of the original question
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Old 17th October 2011, 09:11 AM   #10
Atilla is offline Atilla  Norway
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Sounds like a job for a Class-D powerhouse to me, rather than a chipamp.
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