kiev wrote:During the course of dismantling jay's charger i discovered that the 'clear' plastic sleeving and black heat shrink tubing on the inductor and transformer wiring had somewhat melted and fused together. i don't know at what temperature that would occur, but it is likely greater than 360 F. i've never seen heat shrink melt while using a heat gun during application and it is rated at 360F max. i posted some pictures of the internal aluminum heat sink for the soldered board in the troubleshooting thread.
i connected to level 2 for charging this morning and measured some temperatures inside the box.
started at 8am, everything at ambient, 76F
checked at 9 am, ambient at 80F; 10am, amb at 83
MCU 88; 94
OBC 89; 94
EMI filter top (joe's doghouse), 102; 114
side of obc case, 96; 98
large cap, 127; 144
large inductor rear, 208; 194
transformer rear, 195; 184
trans front, 165; 210
small inductor front, 174; 212
top board surge supp potting, 158; 165
So it's gettin all Hot in Herre
Wow thanks for taking the time to get these numbers Kiev I was tempted . . . but thought better of opening mine up and risking warranty refusal, god forbid. The rub is that these components will run even hotter without the charger cases cover removed and they bathe all the components around them in the hot sauna that they are creating.