Inductive Vs. Capacitive discharging

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vinodquilon

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What is the difference between Inductive & Capacitive discharging ?

I think Capacitor discharges in the opposite direction of its charging. Does it change its polarity ?

And Inductor discharges in the same direction of its charging. Does it change its polarity ?
 
The energy in a capacitive discharge spark is CV². Since the company I used to work for only made CD units, I don’t have the inductive discharge formula memorized but suspect it is going to be something like LI². Polarity should not normally be an issue since the resulting spark is only used to ignite something and the coil secondary output is just two wires ending in a spark gap.
 
You are correct. A capacitor is like a spring, so the charge will come out the terminal with the same polarity, but the current flow is in the opposite direction of the charge current.

A inductor is like a weight with inertia, so the current will stay flowing in the same direction, but the polarity will reverse.

The stored energy is ½LI² for an inductor and ½CV² for a capacitor.
 

Look at this. Should answer all your questions
 

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Thanks for clear explanation...
 
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