No association, yes I got that from your other posts but you certainly know your stuff.
Hot when working less hard... Yes me too, partially on FET,s was the only thing I could think of.
There is no sun right now so I can't test, at least not without running the genny which introduces ripple that may confuse things.
I have picked up a none contact thermometer, so will start with that, I am not looking forward to sticking probes into the power board whilst it,s operating.
I also need to look up some data sheets, not much point in checking VGS if I don't know what it needs to be.
There was good info in your earlier posts, thanks, not finding PWM on the high side would have confised me but it seems to make sense. Just to clarify, when looking at the gates I should see every other half cycle on the high side and PWM producing a sine wave on the low side, is that right?
Whilst I have you... I have been trying to think of a way to measure very different currents with the same device.
My plan is to clamp a hall effect module to a cable, or perhaps bus bar, one of the little 5A modules.
Obviously the proxcimity of the chip to the conductor will change the calibration but I suspect it will still give a linear output.
The thought process then is to add a coil so I can 'Bias' the field on the assumption that the bias current, when the field is null, will be proportional to the current in the monitored conductor... If I build a circuit that keeps the module output at 0A I am hoping that I will be able to measure a few hundred mA just as easily s A few hundred A
Thoughts?
When I have done some tests, on the inverter, I will almost cirtainl have questions.
Do you think folk would apriciate pictures and test results? I am not sure I can offer much insight but perhaps my journey will prove to be informative.
Cheers,
Al