It’s always those 10,000 hp motors that give you away. If you’re running a pair of 10,000 horsepower motors I’d think the electricity company would send you a complimentary ham at christmas and just add some caps to balance your out-of-whack power factor for you. Not just a cheap one either - a quality ham, hand reared by naked virgins on the finest corn.
Edit: this assumes you pay your electricity bill!
I’m amazed at how small paper capacitors are these days. Look at the wax ones in 1950’s radios. In the 1970’s I used a lot of the Sprague Orange drops. They were smaller.
Today, paper capacitors are even smaller. A friend of mine restores and sells antique radios. I’m amazed at how component size has shrank. Well, except for the tubes. They are the same.
Thanks for the link, but I haven’t been able to successfully search the first two sites (I don’t have enough info to fill all their search fields – like tolerance and ESR or equivalent series resistance; and the manuf. seems to be Samsung/Sam Yeung, not listed, and the other codes like XC and VDA don’t appear on the lists either). User-friendly or ordinary-consumer-friendly, these sites ain’t!
On to the Newark site, then…
I don’t think anyone even makes paper capacitors anymore. Well, maybe there are a few still in production. Most non-electrolytic capacitors use either a plastic (Mylar, Polypro, Polyester, etc.) or ceramic as their dielectric.
Those aren’t search fields you’re expected to fill in (unless you know) at Digikey, those are filters. What you do is select only the fields you’re interested in, then click the “apply filters” at the bottom. If this narrows the search enough, you’ll go directly to the first page of results. Or you’ll get a new (narrowed) set of fields. You can also start looking at the results, no matter how many, by clicking the ‘view page’ button. The ‘reset’ button will clear all the filters in case you want to back up.
While it may not be perfect, Digikey actually has one of the better parts search sites around.
As a hobbyist, you’ll also need to check the “in stock” checkbox, which will filter out results for items you can’t order and further reduce the number of results. (It’s a good idea anyway, regardless of whether you can special order).
Barely a day goes by that I don’t don’t repair at least one of these sets.
We buy 1000 uf/16V and 2200 uf/16V (105c) capacitors 50-100 at a time to get the price break.
There is one board where the bigger caps are a tight fit but no repeat failures that I know of.
Most of those fields you can ignore. Is there an “M” or a “K” on the part someplace? “M” is 20% tolerance. “K” is 10%. There is a small chance you might see a “J” and that is 5%.
It’s entirely possible that you won’t be able to find the exact manufacturer. Many of the big TV/phone/computer builders buy their parts from smaller companies.
On the Digikey site, here is what I would use to filter:
Aluminum capacitor
pick the “in stock” check box up at the top
capacitance 2200uf
packaging “radial”
temp “-40 +105º” and “-55 +105º”
limit your voltage to 10v and higher
from there, you need to measure what the lead spacing is on your current part.
Most likely, it will be either 5mm or 7.5mm
I know the Nichicon lines best. If I was doing what you are doing, I’d look at maybe the “PW” series. It’s a middle of the line high temp part.