Power electrolytic capacitors or computer grade capacitors, as they have been traditionally called are a good choice for applications that require large capacitance or a high voltage. They are aluminum electrolytic capacitors that are offered in a can with screw terminals. As the name “computer grade” implies this style of capacitor was originally designed for main frame computers because of their long life and high ripple characteristics. These same characteristics have proven to make them a popular choice in designing power supplies, welding equipment, communications systems and in automotive applications.