Author Topic: lelon capacitors  (Read 5279 times)

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Offline LaserTazerPhaserTopic starter

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lelon capacitors
« on: January 27, 2019, 08:52:08 am »
Recently received Meanwell 12v supply from mouser and it has 2 large Lelon caps and the rest of the ~9 electrolytics are Rubycon. Is this indicative Lelon makes decent capacitors?
 

Offline oPossum

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Re: lelon capacitors
« Reply #1 on: January 27, 2019, 09:17:38 am »
Low quality caps on the primary side are much less of a problem than on the secondary side. The 400V primary side caps don't fail very often.
 

Offline Doctorandus_P

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Re: lelon capacitors
« Reply #2 on: January 27, 2019, 09:26:46 am »
Owtch, now you've got me thinking about Bjork, Post,  track 8.
oPossum's reply made me think some more.

Meanwell is not famous because it makes the best power supplies ever, but because they make a very reasonable quality power supplies for a very competitive price.

Ripple currents on the primary side are 20x lower then on the secondary side, (for 240V -> 12V) which means that internal heating by ESR currents is 400x lower, physical size of high voltage caps is probably larger, so more cooling for the Elco, and I think higher voltage Elco's also tend to have a lower ESR.
[Edit]
Confirmed by the ESR tables in this thread:
https://www.eevblog.com/forum/beginners/esr-values-for-electrolytic-caps/
[/Edit]

So it looks like Meanwell knows where they can save money.
I dunno about Lelon, but my hat of for Meanwell.
« Last Edit: January 27, 2019, 09:59:16 am by Doctorandus_P »
 

Offline mvs

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Re: lelon capacitors
« Reply #3 on: January 27, 2019, 10:06:18 am »
Recently received Meanwell 12v supply from mouser and it has 2 large Lelon caps and the rest of the ~9 electrolytics are Rubycon. Is this indicative Lelon makes decent capacitors?
Lelon is a large manufacturer of electrolytic capacitors. I would asume, that they build their products to the specs they claim.
 

Offline Doctorandus_P

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Re: lelon capacitors
« Reply #4 on: January 27, 2019, 10:16:24 am »
Lelon also makes a wide variety of capacitors.
I would not be surprised if the best Lelon has better spec's and endurance than the cheapest rubycon/ panasonic / other brand.

http://www.lelon.com.tw/en/product.php#5
 

Offline LaserTazerPhaserTopic starter

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Re: lelon capacitors
« Reply #5 on: January 27, 2019, 11:47:11 am »
Meanwell supplies are very small and compact for the power rating unlike the similar form factor Chinese supplies available on ebay and other retailers.
 


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