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Old 10th January 2013, 05:25 AM   #41
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Isn't 1-3 ohm a more correct value if you want to remove the parallel resonance?
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Old 10th January 2013, 05:32 AM   #42
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Thanks, I have been using 10 ohms plus a 100nf cap for the longest time but if seems your studies show better performance with 1 ohm resistor.
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Old 10th January 2013, 07:34 AM   #43
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Quote:
Originally Posted by JohnGeneva View Post
I have only 10000 uf caps at 30 mm, can I place four larger caps under the board upside down . is there room to solder them in place as a way to increasing capitance?
I was thinking to do the same thing but the body of the caps is really close to the soldering pads. It might be dangerous for the caps, especially since we need to keep the iron there enough time to heat the pads.
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Old 10th January 2013, 07:43 AM   #44
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Originally Posted by dimkasta View Post
I built a couple of boards for my F5 a few months back.
I have no big problem, except that they were not really designed to be used with heatsinks (as it was suggested as an option).

The holes for the secondaries and the jumpers are very close to the diode holes, so if you attach heatsinks it is really a PITA to fit the cables in there. And in some cases (like the jumper holes) the heatsinks sit right on top of them, creating mechanical problems and possible shorting issues

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It is now clear that space for heatsinks to-220 diodes packages must be considered. Thank you for the feedback, we will consider your inputs in the next revision.
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Old 10th January 2013, 02:29 PM   #45
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perhaps I will try to add wires from the solder pads to some additional caps.
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Old 12th February 2013, 10:31 PM   #46
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Default Using screw terminal caps off the board

I have the opportunity to get some 22000uf Kendeils at a discount but they are with screw terminals K61 TYPE. These will obviously not fit on the board, so does it matter if I just have leads running from the board to the capacitors mounted on the side of the enclosure? Anything to worry about?
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Old 13th February 2013, 08:50 PM   #47
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Originally Posted by ncg2013 View Post
I have the opportunity to get some 22000uf Kendeils at a discount but they are with screw terminals K61 TYPE. These will obviously not fit on the board, so does it matter if I just have leads running from the board to the capacitors mounted on the side of the enclosure? Anything to worry about?
Then why use the boards??
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Old 13th February 2013, 09:15 PM   #48
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Well, there are other components on the board, I do not have the experience to wire up without a board.
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Old 14th February 2013, 02:04 PM   #49
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Anyone else got a view? Anything to watch out for when wiring up capacitors of the board??
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Old 14th February 2013, 02:22 PM   #50
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I agree there is no reason to use the entire boards if you plan to wire the caps somewhere else. You will just lose chassis real estate and run unnecessary lengths of wire.
Just snap and use only the rectifier parts. The resistors can easily be soldered or screwed straight on the caps
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