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
The breaker tripping was in Sept. As far as I know, the converter was still functional at that time.
The converter is a constant power device. If input voltage goes up, converter demand for input current goes down. The feedback loop of the converter's error amp is very fast; a fraction of a 60 Hz cycle.
Looking at voltage surges as the problem is a wild goose chase.
Every converter has this part/function. There are millions of converters out there. Other converters do not have this failure mode.
Sal
The converter is a constant power device. If input voltage goes up, converter demand for input current goes down. The feedback loop of the converter's error amp is very fast; a fraction of a 60 Hz cycle.
Looking at voltage surges as the problem is a wild goose chase.
Every converter has this part/function. There are millions of converters out there. Other converters do not have this failure mode.
Sal
lorelec wrote:Salvo wrote:
I don't think this is an issue of power cycling. We had already gone through this after the previous failure. The OP is not cycling power.
Also, an overvoltage surge will REDUCE current, not increase current.
Seems like the OP has made a point of mentioning that the failure has been happening right after an off/on event when the generator breaker has tripped.
Try charging a capacitor with more voltage and tell me if the initial charging current doesn't also increase. I=C*(dV/dt)
