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low ESR or low impedance?

Power Supply Design and Troubleshooting - Badcaps Forums - www.badcaps.net
What is the real difference between a low impedance capacitor and a low ESR capacitor? The reason I am asking is when I go searching on Mouser, they categorize them differently. I would think that a low impedance capacitor would also have a low ESR. I guess it would depend on the circuit the capacitor is used in. I have been away from electronics theory for way too long.

Maybe someone could explain this to me. I would also think that a low ESR capacitor would be preferred over others in a power supply.

Any help here would be a great help, since I am working on both a motherboard and its power supply. Bad caps on both...
Date: Oct 8, 2013   


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