Detailed how-to guide for designing with Evox Rifa electrolytic capacitors. provides electrical models, thermal models, lifetime calculations and more. Includes examples for AC motor drives, fluorescent ballasts, welders, power, automotive and other applications.

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Many applications only call for maximum ripple current on an intermittent basis — for example, a power steering unit where maximum current only occurs when turning the steering wheel. This allows optimization of the electrolytic capacitor selection. Otherwise, selecting the capacitor to meet the continuous peak current requirement adds unnecessary costs.

A paper describing the construction of large-can electrolytic capacitors and how the construction affects the capacitors' life in various ways.

A paper originally presented at PCIM in the USA on 11 September 2001. When specifying large-can electrolytic capacitors it is often difficult to account properly for the transient and surge performance. Thus design engineers sometimes choose a capacitor with a higher than necessary safety margin. As these capacitors are one of the higher-priced items in a power electronics circuit, over- specifying can be costly. With proper understanding of transient and surge performance one can reduce the component cost without sacrificing reliability.

(There are also product-specific notes within each catalog section.)

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