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
BFL13 wrote:
OK the one I am getting is 200J with 300 breaking point and the too- small 202 is 4.9w while the 302 is 7w. So how does the 200J spec compare with those watts specs or are they different aspects? ( I am no better with Joules than I am with Watts :( )
The definition of the Watt is Joules/Second or the rate of energy delivery/consumption/transfer.
The 4.9 Watt device can dissipate 4.9 Joules/Second in steady state.
The 7.5 Watt device can dissipate 7.5 Joules/Second in steady state.
Since the voltage changes exponentially across the device, the peak (transient/instantaneous) joule rating is as important as steady state.
