Converter In-Rush Thermistors etc, UPDATE -4
UPDATE on 17 Nov, Update 2 on 22 Nov, Update 3 on 16 Jan 14, Update 4 on 19 Oct 14. --------------- In a recent thread there was mention of how you can wreck your gizmo (in my case a converter) ...
Forum Discussion
LScamper wrote:
ken white wrote:
"Oh, and you can't really ignore the joule specification since a hot restart will have a lower R and therefore the energy dissipated will be much higher."
? So as R goes to 0 the energy dissipated goes to infinity?
LOL, yep...
If we are talking about a hot restart with the capacitor be fully discharged, then yes -> V^2/0 = P an it approaches infinity...
If we are talking about the 5 ohm part, its hot resistance is 0.03 ohm so (170V)^2/.03 ohms = 963.3 kW of instantaneous power...
Not infinity but pretty darn high...
:)
