dannad, Thank you - very interesting. I wasn't expecting that. So my reservation about inductance is unfounded. I would still be a little afraid of lower ESR. If we reduce voltage ripple using larger capacitor (and lower ESR), we have to be sure that this larger capacitor also has higher max ripple current, since shorter charging time requires larger charging current to deliver the same amount of energy (at the same load).
Replacing Amp Caps
I am currently trying to replace the caps in my Bedini 100/100 amp and I am having quite the time trying to find a replacement that will work. I am hoping that someone with more knowledge can give me direction on which way I can go. The amp recently stopped outputting a signal and after all the usual internal checks, with an amp as old as this, cap replacement should be on the list of things to do.
The values and associated numbers on the OEM caps are as follows:
is there a rule of thumb of which direction this value can go? Since it is for an amp, is there a brand/style I should be looking at? I can find little to no information on National Cap, do I assume they are no longer in business and move to another brand?
I have been searching for five days and fully understand I am out of my element and looking for all the help I can getand open to all suggestions.
SteveA
The values and associated numbers on the OEM caps are as follows:
National Cap
85DX
+22000MFD 65VDC
85C USA 8137
Screw Terminals
D=2.5"
H=4.0"
Apparently 65VDC caps are something in the distance pass, of the possible replacement values is either 63V or 70Vis there a rule of thumb of which direction this value can go? Since it is for an amp, is there a brand/style I should be looking at? I can find little to no information on National Cap, do I assume they are no longer in business and move to another brand?
I have been searching for five days and fully understand I am out of my element and looking for all the help I can getand open to all suggestions.
SteveA
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- 35 posts total
- 35 posts total