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Car Audio Discussion
General Car Audio
Capacitors, their NOT what some people claim..
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<blockquote data-quote="keep_hope_alive" data-source="post: 8283842" data-attributes="member: 576029"><p>the main difference between an ultracap and a standard electrolytic cap - the ultracap uses sheets of carbon which have 3,000 times more surface area than metal foil. that's pretty much it. they exploit the concept of capacitance being a function of surface area and distance. increase surface area and/or decrease distance and you increase capacitance. the carbon sheets just have a voltage limitation, hence the 2.7V rating.</p><p></p><p>the BCAP3000 is rated for 1,000,000 cycles. and since we don't fully cycle a cap in car audio but just modulate over a few volts and never at rated voltage, we are basically "petting" these things. the 1,500 hour rating is when operating at rated voltage and at rated maximum temperature of 150 deg F. since we don't operate at 150 deg. F we are not concerned with longevity.</p><p></p><p><a href="https://www.maxwell.com/products/ultracapacitors/docs/datasheet_k2_series_1015370.pdf" target="_blank">https://www.maxwell.com/products/ultracapacitors/docs/datasheet_k2_series_1015370.pdf</a></p><p></p><p>and a ton of other literature</p><p></p><p><a href="http://www.maxwell.com/products/ultracapacitors/downloads" target="_blank">Maxwell Technologies - Ultracapacitors - Downloads</a></p><p></p><p>the caps i've been buying are used, from solar power energy storage modules. even used they help these vehicles.</p><p></p><p>but to support your original thread, a standard 1F electrolytic cap is useless unless it is inside the amp and at the rail voltage. i've used and installed them and it made no difference.</p><p></p><p>also, since ultracaps are much lighter you save fuel. batteries are heavy. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif</p></blockquote><p></p>
[QUOTE="keep_hope_alive, post: 8283842, member: 576029"] the main difference between an ultracap and a standard electrolytic cap - the ultracap uses sheets of carbon which have 3,000 times more surface area than metal foil. that's pretty much it. they exploit the concept of capacitance being a function of surface area and distance. increase surface area and/or decrease distance and you increase capacitance. the carbon sheets just have a voltage limitation, hence the 2.7V rating. the BCAP3000 is rated for 1,000,000 cycles. and since we don't fully cycle a cap in car audio but just modulate over a few volts and never at rated voltage, we are basically "petting" these things. the 1,500 hour rating is when operating at rated voltage and at rated maximum temperature of 150 deg F. since we don't operate at 150 deg. F we are not concerned with longevity. [URL="https://www.maxwell.com/products/ultracapacitors/docs/datasheet_k2_series_1015370.pdf"]https://www.maxwell.com/products/ultracapacitors/docs/datasheet_k2_series_1015370.pdf[/URL] and a ton of other literature [URL="http://www.maxwell.com/products/ultracapacitors/downloads"]Maxwell Technologies - Ultracapacitors - Downloads[/URL] the caps i've been buying are used, from solar power energy storage modules. even used they help these vehicles. but to support your original thread, a standard 1F electrolytic cap is useless unless it is inside the amp and at the rail voltage. i've used and installed them and it made no difference. also, since ultracaps are much lighter you save fuel. batteries are heavy. [IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG] [/QUOTE]
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