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18th January 2013, 07:10 PM  #2391 
diyAudio Member
Join Date: Jan 2013

please, help!! is it ok transformer 628VA 73Vmax for both stereo chanel ?!
I mean if its not enough power, what can be happen? The deal is that I Have this psu and 700wt petrol electricity generator as a power suply for all that 
18th January 2013, 07:13 PM  #2392 
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Join Date: Dec 2011


18th January 2013, 10:46 PM  #2393 
diyAudio Member
Join Date: Jan 2013

thank you very much ! and what about stereo minimum requirements for PSU (500wt*2) ?
VA,Vmax,A... 
19th January 2013, 06:01 PM  #2394  
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Join Date: Dec 2011

Quote:


19th January 2013, 06:14 PM  #2395  
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Join Date: Dec 2011

Quote:
or go to 3ef and you can bridge mode with 4r load. regards... 

19th January 2013, 09:59 PM  #2396 
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Join Date: Jan 2013

thanks! how about amperes, how much amperes should give PSU, how to calculate it in right way ?

19th January 2013, 10:35 PM  #2397  
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Join Date: Jan 2013

Quote:
for example, how much Vac I need from 1000Wt psu..or 700wt..or 640wt psu... for stereo mode ?! how to calculate it ?! hope to get an answer, thank you in advance !!! Last edited by tranceanddance; 19th January 2013 at 10:45 PM. 

20th January 2013, 07:37 AM  #2398  
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Join Date: Dec 2011

Quote:
hope this will help you. regards. 

20th January 2013, 07:57 AM  #2399 
diyAudio Member
Join Date: Jan 2013

thanks, i know that formules, but still have little misunderstanding..i mean...for example
if I have 1000VA transformer, how can I calculate how much U and I i must have for this amp? I know only one thing  P(W)1000wt(stereo mode), how I can calculate U(volts) and I(amperes) ?! P=UI, so i need to know more or U or I to get almost all I need to build PSU what is algorythm? Last edited by tranceanddance; 20th January 2013 at 08:09 AM. 
20th January 2013, 10:54 AM  #2400  
diyAudio Member
Join Date: Dec 2011

Quote:
(PxR)sqrt=vrms (500x4)sqrt=44,72 P/vrms=I 500/45=11,11 so for real 1kw stereo is 45vrms at 22,22A or PSU spec is 55vac 25A. 

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