Unbranded 100F capacitor - Page 1
Forum section: electronics / general

author: MatthewMorgan
author_rank: Regular Contributor
timestamp: June 28, 2016, 11:15:04 am
content: I just ordered a 2.7V100F ultra capacitor and just thinking of ideas it could be used for.Some ideas i am thinking of:Flash lightArduino RF ProjectCB transmitter.Witch of thoes ideas would you like to see?

author: Kilrah
author_rank: Unknown
timestamp: June 28, 2016, 11:18:27 am
content: What kind of ultracap? What specs?Some ultracaps are made for things like RTC backup and have internal resistances so high they won't even power a flashlight...

author: MatthewMorgan
author_rank: Regular Contributor
timestamp: June 28, 2016, 11:23:32 am
content: Quote from: Kilrah on June 28, 2016, 11:18:27 amWhat kind of ultracap? No brand on listing but most lickly samwha ELECTRIC DOUBLE LAYER CAPACITORWhat specs? 100F 2.7VI saw a youtube video but he got another brand one.

author: ZeTeX
author_rank: Frequent Contributor
timestamp: June 28, 2016, 07:38:52 pm
content: Quote from: MatthewMorgan on June 28, 2016, 11:23:32 amWas it from aliexpress?

author: bitseeker
author_rank: Super Contributor
timestamp: June 29, 2016, 12:15:19 am
content: If they can hold their charge for long periods of time, I'd use them for a general-purpose power pack to drive portable/floating test equipment with low duty cycles (short run times, long down times). Might need a buck/boost converter to adapt to different devices.Of course, even if they can't hold a charge for too long, they'd still be useful since they can charge up more quickly than rechargeable batteries.

author: MatthewMorgan
author_rank: Regular Contributor
timestamp: June 29, 2016, 04:44:28 am
content: Quote from: ZeTeX on June 28, 2016, 07:38:52 pmeBay

author: JoeN
author_rank: Frequent Contributor
timestamp: June 29, 2016, 04:49:07 am
content: I think you got the whole Choose Application, Order Parts thing backwards.

author: MatthewMorgan
author_rank: Regular Contributor
timestamp: June 29, 2016, 04:55:51 am
content: Quote from: JoeN on June 29, 2016, 04:49:07 amParts are so cheap due to china so i end up ordering things due to videos on them.

author: bitseeker
author_rank: Super Contributor
timestamp: June 29, 2016, 05:13:24 am
content: One can draw inspiration from parts rather than problems. "Hmm, what can I make this do?" It's not so good for developing commercial products, but fine for projects. Whatever gets you motivated.

author: karoru
author_rank: Regular Contributor
timestamp: June 29, 2016, 05:19:19 am
content: Quote from: JoeN on June 29, 2016, 04:49:07 amSometimes you feel alone, lurking through aliexpress electronic parts at night, and all these Wang Hung Low beautiful things will just sing to you "I'm cheap, cool and my owner offers free postage for honorable customers" and you just can't say "no".Then you get buried with 5 reels of general purpose PNP transistors, few ultracaps, strip of UV LEDs and microwave adjustable attenuator.

author: bitseeker
author_rank: Super Contributor
timestamp: June 29, 2016, 05:29:57 am
content: Shhh! Don't say stuff like that. It's contagious, you know. If you can't sleep, read a User Guide or something.(But use an e-reader for those PDF manuals. Backlit screens keep you awake, or so "they" say.)

author: MatthewMorgan
author_rank: Regular Contributor
timestamp: June 29, 2016, 06:01:50 am
content: Quote from: karoru on June 29, 2016, 05:19:19 amOr end up with $2 50 packs of NE555and about 800 resistors or 400 disk capacitors. or even £1.60 low voltage to high voltage converters and that is just eBay.

author: MatthewMorgan
author_rank: Regular Contributor
timestamp: June 30, 2016, 12:31:11 pm
content: This is the listing im getting it from:http://www.ebay.co.uk/itm/1Pcs-NEW-Super-capacitor-2-7V100F-ultra-capacitor-farad-capacitor-2-7V-100F-/191893085132

author: ZeTeX
author_rank: Frequent Contributor
timestamp: June 30, 2016, 01:46:16 pm
content: Quote from: MatthewMorgan on June 30, 2016, 12:31:11 pmFake :\I have the exact same capacitors same series but 500F - which is bullshit because SAMWHA does not mention any 500F capacitors in their "Green-Cap" series.

author: MatthewMorgan
author_rank: Regular Contributor
timestamp: June 30, 2016, 02:22:06 pm
content: Quote from: ZeTeX on June 30, 2016, 01:46:16 pm100F is listed but 500F is not.400F is the max listed but it would be interesting to see how good of a cap gets delivered.I watched videos of cheap high fared caps from china and i would say they where not small caps at all.I know chinese caps are not bad as they used to be.

author: bitseeker
author_rank: Super Contributor
timestamp: June 30, 2016, 05:38:15 pm
content: Sounds like super cap specification analysis will be the first project (i.e., what are its true characteristics?).

author: MatthewMorgan
author_rank: Regular Contributor
timestamp: June 30, 2016, 06:08:31 pm
content: Quote from: bitseeker on June 30, 2016, 05:38:15 pm2 NMHI = 2.4v so for 100F would be 66.667 mAh to chargeSo it would be a Mah meter to calculate the capacity.