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Old 29th December 2010, 01:53 PM   #631
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Quote:
Originally Posted by Russellc View Post
Peter, I thought I would pick up another set of F-5 boards. Do we use the info and pricing on page 1 still? seems like I remember an increase for shipping or something? Same pay pal address on the audiosector site?
Same address, current pricing was posted here: F5 pcb group buy...
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Old 29th December 2010, 02:08 PM   #632
Kilroy is offline Kilroy  United States
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Originally Posted by regiregi22 View Post
Thanks, quite recomforting


Kilroy, you must choose capacitor rating to be AT LEAST higher than the applied voltage. So, for a 24v supply, 25v rating would be enough. They won't explode if you apply 26v or even 28, but that will shorten their life.
Personally, I would use 35v for a 24v supply. Going higher only increases size and cost.

Regards,
Regi
Great, thanks!
That's what I thought, but I just wanted to make sure there wasn't some kind of magic I was missing.

-Phil
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Old 29th December 2010, 02:49 PM   #633
Kilroy is offline Kilroy  United States
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Originally Posted by tinitus View Post
I bet they are with good ripple ratings (current)
In the F5 manual he mentions 22000uF, 25V, 70mV ripple...

Is 70mV low?
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Old 29th December 2010, 03:32 PM   #634
AndrewT is offline AndrewT  Scotland
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Quote:
Originally Posted by Kilroy View Post
In the F5 manual he mentions 22000uF, 25V, 70mV ripple...

Is 70mV low?
that's the ripple voltage at the output of the PSU.
What he referred to was ripple current through the capacitor.
The operational ripple current must be less than the ripple current rating of the capacitor/s
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Old 30th December 2010, 09:00 PM   #635
potepuh is offline potepuh  Slovenia
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payment send
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Old 12th January 2011, 04:22 PM   #636
sugden is online now sugden  Singapore
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Hi Peter,
I have received the F5 PCBs you sent, thanks.

Regards
MartinTie
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Old 12th January 2011, 04:32 PM   #637
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Hi Martin,

How long did the boards take to reach you ?
I can probably estimate when it will reach JB, Malaysia.
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Old 13th January 2011, 01:45 AM   #638
sugden is online now sugden  Singapore
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It take nearly 3 weeks.


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Originally Posted by chlorofille View Post
Hi Martin,

How long did the boards take to reach you ?
I can probably estimate when it will reach JB, Malaysia.
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Old 18th January 2011, 08:01 AM   #639
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Hi Peter. Ordered F5 pcb's + PS pcb today (Paypal). Thanks already

Greetings, Joffrey
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Old 18th January 2011, 12:00 PM   #640
h_a is offline h_a  Europe
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Quote:
Is 70mV low?
Sure; but that's most of the time nothing to worry about, PSRR of the circuit (its ripple rejection) reduces this further to usually meaningless values

Hannes
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