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Old 10th October 2004, 06:21 PM   #1
kinser is offline kinser  Israel
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Default p68 power supply questions

Hi guys,
I have gust finished my p68 500w amp, and am busy starting the power supply. Here in isreal i cant get 100v caps for the power supply, the max i could find is 63v....
So I put this schematic together...
will it work like this?
Thanks,
Kinser
BTW im only 14 years old...
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Old 10th October 2004, 06:51 PM   #2
mikeks is offline mikeks  United Kingdom
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Hello Young man....

Good to see young talent here

Keep up the good work...
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Old 10th October 2004, 06:59 PM   #3
kinser is offline kinser  Israel
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Thanks mikeks,
But is this circuit ok? i mean by connecting the caps in series?
am I right if by connecting two 63v capacitors on each rail in series will make a total of 126v on each rail? and will be more than enough for each rail?

Thanks agian
Kinser
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Old 10th October 2004, 07:00 PM   #4
Jean is offline Jean  United States
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Yep you can wire up your capacitors in series like you want to increase voltage rating. But you have C3 and C4 upside down ?
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Old 10th October 2004, 07:05 PM   #5
kinser is offline kinser  Israel
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oppss.....
i was in a hurry to post the image....
they will be the oppiset next time....
i will fix it, thanks any way
Kinser
p.s.
sorry for bad spelling.... im am from south africa, but moved to israel 9 years ago!
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Old 10th October 2004, 09:43 PM   #6
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Just be aware that you are effectively halving the capacitance per rail to 3400uF too

Tony.
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Old 11th October 2004, 06:17 AM   #7
kinser is offline kinser  Israel
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Hi tony,
can i then put four caps per rail (two in series and then parellel both two) caps in parellel? so i will get 6800uf again?
gotta go to school, I will be back in 5 hours
speak to all of you later
bye
Tjanks
Kinser
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Old 11th October 2004, 07:33 AM   #8
AndrewT is offline AndrewT  Scotland
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Hi
try www.eBay.com and search for capacitor & capacitors in business/industrial. You should find some much cheaper than normal retail but you will have to add postage cost.
You are too young to register ask an adult to register on your behalf & they need a credit card.
regards
Andrew T.
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Old 11th October 2004, 11:35 AM   #9
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Hi Kinser,

that will certainly bring it back up to 6,800uF, although it is going start to get expensive. Might be cheaper to get 100V ones shipped from somewhere else.


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Old 11th October 2004, 11:56 AM   #10
kinser is offline kinser  Israel
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Money is a problem for me:

I have found some 4700-8000uF caps on Ebay but the price for one of these caps is 15-30$ times that by two pluse the shipping fee..
it is alot of money for me...
cant i do something like this?(the attached image)
Thanks
Kinser
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