Hey everyone.
I have been reading though this forum for the past week. I'm very impressed by the community. I'm still very new so I apologize for my ignorance. I just bought my first solder station and I'm eager to learn, yet my formal education is limited to a college physics course. On to my question:
I always thought lower impedance was best until I came here. I've done my best to read through the FAQs and other posts but I'm still kinda confused
. Generally what I got was that when replacing a capacitor on a motherboard, replacing a cap with a lower impedance is better. However, on a PSU, you should closely match the impedance with the original or else it will "detune" and you'll get more ripple. Can anyone elaborate on this?
What about replacing caps on other devices (not the power supply portion), should I always use replacements caps with lower impedance?
Does the max ripple current rating on a cap need to match or is fine as long as its better?
Also I've seen experienced members replace caps in power supplies where the impedance is not in spec with the original (ie original is 75mOhms and the replacement is 30mOhms). So I'm confused as to when this is ok to do.
Insight to any of my questions would be greatly appreciated! Thanks!
Best,
David
I have been reading though this forum for the past week. I'm very impressed by the community. I'm still very new so I apologize for my ignorance. I just bought my first solder station and I'm eager to learn, yet my formal education is limited to a college physics course. On to my question:
I always thought lower impedance was best until I came here. I've done my best to read through the FAQs and other posts but I'm still kinda confused

What about replacing caps on other devices (not the power supply portion), should I always use replacements caps with lower impedance?
Does the max ripple current rating on a cap need to match or is fine as long as its better?
Also I've seen experienced members replace caps in power supplies where the impedance is not in spec with the original (ie original is 75mOhms and the replacement is 30mOhms). So I'm confused as to when this is ok to do.
Insight to any of my questions would be greatly appreciated! Thanks!
Best,
David
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