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
Salvo wrote:
Apparently Ken still doesn't understand 1/2CV^2. I doesn't matter what the thermistor resistance is. The energy dissipated during turn-on is 1/2CV^2. And once the converter is up and running, a lower thermistor resistance will LOWER its power dissipation.
Other than nonsense I see I haven't missed anything having him on ignore.
SalLScamper 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?
wrong wrong, wrong!!! yes,, the current into the capacitor is 1/2CV2. BUT the capacitor DOES NOT repeat DOES NOT disipate any energy, it stores energy. (well it isn't ideal so it will disipate some small amount) the energy disipated is the I from CV2 that is absorbed by the resistor and is I squared R. so YES it DOES matter what the thermistor resistance is.
