Hi Folks,
This is my first post here. My question is about ripple current. If a capacitor is on a circuit powered by filtered DC, is ripple current still getting to the cap? I am using a 3300 mfd 50 volt electrolytic cap as an "electronic flywheel" in parallel with a DC can motor powered by AC (the locomotive has a full wave bridge rectifier inside) from an ordinary toy train transformer with a max of 18 VAC. If I were to power the locomotive with filtered DC (filtered by a 2200 mfd 50 volt cap) instead of AC, could I use a cap of a lower voltage rating? Speaking just in theory, does a filter cap reduce or eliminate ripple current in other caps down the line?
My basic rule of thumb is to use a cap rated at about 2-3 times the voltage it may receive. My electronics knowledge is from hobby reference materials and some basic practical experience like sizing-up the cap if it gets warm.
I will be happy to elaborate if that would help!
Thanks!
Take care, Joe.
This is my first post here. My question is about ripple current. If a capacitor is on a circuit powered by filtered DC, is ripple current still getting to the cap? I am using a 3300 mfd 50 volt electrolytic cap as an "electronic flywheel" in parallel with a DC can motor powered by AC (the locomotive has a full wave bridge rectifier inside) from an ordinary toy train transformer with a max of 18 VAC. If I were to power the locomotive with filtered DC (filtered by a 2200 mfd 50 volt cap) instead of AC, could I use a cap of a lower voltage rating? Speaking just in theory, does a filter cap reduce or eliminate ripple current in other caps down the line?
My basic rule of thumb is to use a cap rated at about 2-3 times the voltage it may receive. My electronics knowledge is from hobby reference materials and some basic practical experience like sizing-up the cap if it gets warm.
I will be happy to elaborate if that would help!
Thanks!
Take care, Joe.
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