methods wrote:Dat one Gary is da smart guy!
Kim - get to it mate.
Take a good picture of the section in question - it is only 6 little screws - should take less than 15 seconds to pop the top.
Take the best picture you can - I will take another with my "real" camera.
We can then have a contest for who can find the differences first.
MrKang wrote:Maybe i can connect the lipo 6S battery medic to balance them a bit while charging.
GGoodrum wrote:First of all, Mike you are talking about two distinct mods, the second of which I don't think is all that useful. The first is finding how to simply lower the CC limit, back down to around the 100% level. In the case of the S-350 series, this simply involved lowering the resistance of a single resistor. The second change you propose is to essentially change models, turning a 24V/13A into a 48V/6.5A, for instance. I think most here that either have a MW supply, or are contemplating getting one, are very interested in the CC limit mod, but I think very few are too interested in "changing models", so we don't need to make doing both mods a priority. I think we should concentrate on figuring out how to do the CC mod, and the CC mod only, to the newer SP-320 models.
Tiberius wrote:I agree with you, but up to a point. Lowering the CC limit by changing a resistor is a better method than one I came up with first - cutting a shunt. It has to be worth someone tracing out the various circuits round that current comparison area, because there do seem to be quite a few variations. I've even had nominally identical PSUs with different R values in places.
Tiberius wrote:Where I disagree slightly is in the need for hacking the voltage around. True, turning a 24 V PSU into a 48 V one isn't needed; its better to get a 48 V one to start with. But the native tuning range on each model is only +/-10%; we need to increase that or move the centre around to cover all the voltages needed.
To that end, Kim, you still haven't supplied a picture that has enough resolution, and is from the right angle,
dozentrio wrote:I liked your approach to having the fan on constantly. I was able to do this by putting a 1k resistor in parallel with the thermistor though.
I have some questions about the current limit. First of all, where are these shunts and what do they look like?
Also, what is a good way of measuring the max current output of my supply?
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