low CAp Values on P.S. HI-voltage? - diyAudio
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Old 10th April 2012, 12:01 AM   #1
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Default low CAp Values on P.S. HI-voltage?

Just wondering if its safe to change out the Fiter caps on the Power supply for more uF's. On my Sony cdp-s7700 It has two 250v 560uf slimics in parralel so hardly nothing but Voltage. wondering if i should add some UF ? i Got some 2200uf 63v nichicon Fw's, I didin't know if the voltage was the safer way to go. it seems every P.S. i look at is the same Low capacitance, High Voltage? is this good ? It seems they all lack transfrormer so I thought they were getting an over rated Capacitor to deal with the Voltage, they all seem to be set up with a weak inductor,then some box Y-type capactiors I don't know the name,they always look look like a relay to me. So is there any problem adding More Uf's to the supply filtering? The sony's got two power supply. Best i've delt with, ones a U core!
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Old 10th April 2012, 09:48 AM   #2
AndrewT is offline AndrewT  Scotland
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250V (ac or dc), 560uF is a big capacitor.

Are you sure you have read and typed the values correctly?
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Old 10th April 2012, 10:38 AM   #3
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Looks like it is an smps. Beware

Gajanan Phadte
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Old 11th April 2012, 11:02 AM   #4
DF96 is offline DF96  England
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Strange as it might seem, power supplies have to be designed. Some circuits can cope with extra capacitance being simply slapped on, some cannot. Even when the circuit can cope, extra capacitance may or may not improve things.
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Old 12th April 2012, 12:53 AM   #5
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So should i Just leave it alone I was slaping on a Elna 10,000uf in place of one of them. So is there a need for theser to be high voltage caps, is this better than the Opposite way of Lager Capacitance, lower voltage. This is the powee suppy using the R-core transformer, the other P.S. is a switchig, It has two indivdual supplys, that split from the A/C input. I mean on my outboard dac. I got a 63v 2,200uf on each line off of an R-core for a total of three. I just want it right. Thanks for any suggestions.
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Old 12th April 2012, 01:05 AM   #6
godfrey is offline godfrey  South Africa
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Quote:
Originally Posted by swanny50 View Post
So should i Just leave it alone
Yes!!! You're heading for a Darwin award here.

I wouldn't want to be in the same room as you if you swap a 250V capacitor for a 63V electrolytic. Actually I wouldn't even want to be in the same house.
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Old 12th April 2012, 09:47 AM   #7
AndrewT is offline AndrewT  Scotland
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Some folk know so little, that they cannot recognise when or if they put themselves in danger.
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Old 12th April 2012, 09:57 AM   #8
DF96 is offline DF96  England
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Ah, the bliss of ignorance!!
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Old 12th April 2012, 09:59 AM   #9
AndrewT is offline AndrewT  Scotland
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The bliss of recognising our limitations. That way we survive.
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Old 13th April 2012, 10:44 AM   #10
Simon B is offline Simon B  United Kingdom
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Originally Posted by DF96 View Post
Ah, the bliss of ignorance!!


More like the blisters of ignorance.

At the very least.

Here in the UK, we mostly let off fireworks on November the 5th........

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