supercap energy calculation

[aspirecole]

if im having a 16V 58F supercap... what is the current i would get if i want to boost it to 40V for 30 second... what is the calculation??

 

[betwixt]

1. thick wires
2. blast shelter
3. body armor
4. earplugs.

A numerical answer is impossible, it will explode well before you have to worry about it.

Brian.

 

[FvM]

A numerical answer is impossible, it will explode well before you have to worry about it.

You might have misunderstood the question. It can be read as a meaningful exercise problem.

Capacitor stored energy is E = 0.5*C*V². There will be a residual capacitor voltage after discharge and less than unity boost converter efficiency to be considered.

 

[betwixt]

It's a 16V rated capacitor, putting 40V across it isn't a good idea. If the question is how much current would discharge it in 30 seconds, the implication is a 40V boost converter is needed so it's efficiency and ability to regulate it's output (minimum input voltage) must be known before a calculation can be made.

Brian.