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ERIC Number: EJ1001304
Record Type: Journal
Publication Date: 2012-Jul
Pages: 5
Abstractor: As Provided
Reference Count: 10
ISSN: ISSN-0031-9120
The Internal Resistance of Supercapacitors
Costa, G. G. G.; Pietronero, R. C.; Catunda, T.
Physics Education, v47 n4 p439-443 Jul 2012
In this paper we study the transient behaviour of RC circuits with supercapacitors, varying R between 1 and 100 [omega]. We demonstrate that supercapacitors behave as ideal capacitors in series with an internal resistance (r [similar to] 8 [omega] for C = 0.2 F, 5.5 V). This result is important to optimize the demonstration of RC circuits using a supercapacitor in series with a light bulb, because the "r" value is comparable with the effective resistance of the bulb. This means that the bulb brightness is significantly decreased by "r". (Contains 6 figures.)
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A