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@BradtheRad:
Thank you very much for your time (to simulate the circuit above). I'm going to give it a try for sure (in the name of science!).
@Easy peasy:
Unfortunately, LM358 has quite a big input offset voltage (5mV) and I have no means (negative supply) to compensate it. On the other...
I am using that shunt to monitor/detect an overcurrent (shortcircuit) condition hence I don't need a very good accuracy nor a high precision zero/full scale (that issue could be further adjusted on the comparator stage). For now, I just need to amplify (x100) the shunt voltage.
In theory, the...
Hello,
I have a 250A/60mV shunt to monitor a power inverter operation. The shunt is located on the low-side (that's it, the inverter ground is floating - max 60mV).
As I only have a single supply available (+12VDC, the inverter housekeeping supply), is there any inamp/opamp (or any other...
Yepp.. at least there's one correct solution. ;)
Do you know of any other "classic" similar solution? This one was designed by myself based on common sense observations.
You're right, there are tons of integrated solutions (the well-known LM2596 having internal current limiter and a very convenient TO-220 package) but I was just thinking of a discrete, cheap and low footprint concept. Just for the reference, do you know of any other simple (discrete) solutions?
I have decided to go with a series regulator for that 12V (housekeeping) output.
Anyway, I thought about other simple ways to actually regulate this kind of unloaded outputs and something like this crossed my mind:
It is some kind of controlled rectifier. Is it going to work? (from the...
Never thought of this kind of troubles (my first unbalanced forward converter).. lesson learned.
Anyway, I've just found some literature about "the coupled-inductor in a multiple-output forward-type converter".. maybe I'll give it one more chance.
I had a 60W load on the 24V output and a smaller one (2W) on the 12V one. If I increase the load (20W) on the 12V output, the voltage is decreasing (16V), indeed, but I don't want such a big load on the 12V rail (it's mainly for housekeeping and some 12V relays).
I've read about using a coupled...
I think it's all about the (lack of) cross-regulation when you deal with multiple/unballanced outputs.
I'll try to get some help on this particular thread: Fundamental physics of coupled inductor cross-regulation in forward converter?.
Hello,
I have designed a 2-switch forward converter (48VDC => 12/24VDC, 100W). As I was needing two outputs (12V/24V), I have decided to buid a center tapped transformer(for a better cross regulation) like in the diagram bellow.
Everything works fine, except I've got around 21V(??) on the...
Re: MPPT implementation ,how to balance
When it comes to battery charging, there's only three main stages: bulk, absorption and float. Depending on the actual stage (by reading the battery VOLTAGE), your (MPPT) charge controller will adjust the output CURRENT.
That's it, the charger will...
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