Comments on: Ultracapacitor Flashlight Recharges In 90 Seconds http://www.ohgizmo.com/2008/11/10/ultracapacitor-flashlight-recharges-in-90-seconds/ Deliciously Geeky... Tue, 24 Nov 2009 20:33:34 -0600 http://wordpress.org/?v=2.8.4 hourly 1 By: r4nd0mn4me http://www.ohgizmo.com/2008/11/10/ultracapacitor-flashlight-recharges-in-90-seconds/comment-page-1/#comment-396223 r4nd0mn4me Sun, 03 May 2009 15:16:55 +0000 http://www.ohgizmo.com/?p=16023#comment-396223 My avast antivirus has detected a Trojan horse in the file <a href="http://www.ohgizmo.com/2008/11/10/ultracapacitor-flashlight-recharges-in-90-seconds/?fbc_receiver=1" rel="nofollow">http://www.ohgizmo.com/2008/11/10/ultracapacito...</a> called JS:ScriptPE-inf [Trj] ...has anyone else got this warning from this site or is it just a false positive? My avast antivirus has detected a Trojan horse in the file http://www.ohgizmo.com/2008/11/10/ultracapacito... called JS:ScriptPE-inf [Trj] …has anyone else got this warning from this site or is it just a false positive?

]]> By: Evan Ackerman http://www.ohgizmo.com/2008/11/10/ultracapacitor-flashlight-recharges-in-90-seconds/comment-page-1/#comment-392100 Evan Ackerman Mon, 10 Nov 2008 23:20:27 +0000 http://www.ohgizmo.com/?p=16023#comment-392100 Yeah, there are certainly downsides, which is why (despite the obvious advantages) we're not seeing them in more places. But, as with any other emerging tech, I'm optimistic that they'll be getting faster + better +smaller + cheaper in accordance with Moore's law :) Yeah, there are certainly downsides, which is why (despite the obvious advantages) we're not seeing them in more places. But, as with any other emerging tech, I'm optimistic that they'll be getting faster + better +smaller + cheaper in accordance with Moore's law :)

]]> By: Evan Ackerman http://www.ohgizmo.com/2008/11/10/ultracapacitor-flashlight-recharges-in-90-seconds/comment-page-1/#comment-389467 Evan Ackerman Mon, 10 Nov 2008 22:20:27 +0000 http://www.ohgizmo.com/?p=16023#comment-389467 Yeah, there are certainly downsides, which is why (despite the obvious advantages) we're not seeing them in more places. But, as with any other emerging tech, I'm optimistic that they'll be getting faster + better +smaller + cheaper in accordance with Moore's law :) Yeah, there are certainly downsides, which is why (despite the obvious advantages) we're not seeing them in more places. But, as with any other emerging tech, I'm optimistic that they'll be getting faster + better +smaller + cheaper in accordance with Moore's law :)

]]> By: Andy http://www.ohgizmo.com/2008/11/10/ultracapacitor-flashlight-recharges-in-90-seconds/comment-page-1/#comment-389459 Andy Mon, 10 Nov 2008 13:41:33 +0000 http://www.ohgizmo.com/?p=16023#comment-389459 Capacitors have far less, well, capacity than batteries. Here's the math: A typical AAA NiMH rechargable has 850 mAH (milliamp hours), so that means it can put out about 1 amp of current for 1 hour at 1.5 volts<br><br>For capacitors, farad = (amp * second ) / volts. Sooo, if you have a 1 farad capacitor, charged to 1 volt, that means you can put out 1 amp for 1 second. It would take 3,600 of those to do 1 AH. Capacitors have far less, well, capacity than batteries. Here's the math: A typical AAA NiMH rechargable has 850 mAH (milliamp hours), so that means it can put out about 1 amp of current for 1 hour at 1.5 volts

For capacitors, farad = (amp * second ) / volts. Sooo, if you have a 1 farad capacitor, charged to 1 volt, that means you can put out 1 amp for 1 second. It would take 3,600 of those to do 1 AH.

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