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Hello KlauST, Sorry if I was a bit misleading but I wanted to make myself understandable. The inductor you see on the previous post has 4 ends 2 for each rail. when I got it hooked in the wrong phase the voltage drop was enormous and nearly I could draw no current at all. I can say that...
The Idea was taken from these two schematics (attached) in the second one however I think the value is mistaken for 32uH rather than 320uH.
Does not nearly every smps has an output inductor to minimize ripple? Without a minimum inductance (5uH) it was difficult to load the smps even when it...
Thanks once again for your patience Klaus. I am uploading the schematic for you to take a look (Here I am talking of L2/3 which is a bifilar choke on the main output) the wire gauge is 1.5mm enameled copper wire. Turns are around 15 for each leg as I don't remember exactly but the choke was...
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Thanks KlausST, so this will bring out the fact that according to the frequency and total power traveling through the core will bring out the physical size of the core. The more output inductance involved the more voltage drop and less ripple. On a previous tread:- I had...
Thanks Klaus, The information was quite a help. I made need more info to make use of my cores in my junk box. Example color code, What size in relation with current handling etc.
Dear all, I have been experimenting with SMPS for quite a while now but I have found that when choosing output inductors a few problems occurred especially regarding voltage drop and the output inductor getting hot.
I have been using Excellent IT during my design for half bridge topology and...
Thanks a lot Shmitt trigger. I have been playing a bit with the smps today and when I added some decoupling to the input of the TL431 the problem was solved. Yet I still have some problems with center tap wonder as if I load only at the ends without using the center tap the voltage will shift...
I have built a 1000w smps which I decided to add feedback to it.
The smps reached a peak of 1200watts and the output voltage dropped to 125v un-regulated.
I made a feedback loop with an opto coupler and another reference with a TL431.
My Problem is that if I have an amp load on the output and...
Thank you very much for your help.
one last question to make things more clear please.
When using Excellent IT software. According to the skin dept shown on the software mean that I can double the diameter is that correct?
Regards, Salvu
Well I experimented a bit and trimmed out some resistor values. I ended up with a current limiter and works very well. The advantages I found where:-
1) It limits the current during charging secondary caps. (IR2153 has no soft start)
2) Can start up smps on nearly full load (600W) Max power...
I am a bit confused what is the maximum ECW diameter versus skin dept
For example if according to the frequency of operation the maximum skin dept is 0.5mm
1) What will be the maximum diameter of ECW can be used is it 0.5mm or 1mm?
2) If I have to twist a bundle of 4 wires will the overall...
Sorry Klaus, if I was a bit misleading. I am really looking for some kind of protection that protects the fets. What really I was considering is having something that works as a limiter and also shuts down in due time in the event of a short on the output. My circuit does not shut down but...
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