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Post by KevinK on Mar 6, 2018 18:55:38 GMT -8
What you are using is pretty close to it.
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Post by lamazoid on Mar 6, 2018 21:29:02 GMT -8
What you are using is pretty close to it. no. litz wire has strands insulated from each other! what i use is a regular cheap multi-strand wire, teflon insulated (it's a regular russian wire for interconnections in electronic devices)
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Post by KevinK on Mar 15, 2018 20:40:34 GMT -8
thats still not a good choice, because for rm6 sections are too wide. believe my experience - it will not last long. However, winding layer-by-layer bobins is not impossible, if you will pick a bigger pot core like P22 Ok I have this right now. Ordered it. How exactly do you use the three different sections to wind? How is the secondary fit here.
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Post by lamazoid on Mar 16, 2018 10:13:29 GMT -8
thats still not a good choice, because for rm6 sections are too wide. believe my experience - it will not last long. However, winding layer-by-layer bobins is not impossible, if you will pick a bigger pot core like P22 Ok I have this right now. Ordered it. How exactly do you use the three different sections to wind? How is the secondary fit here. good question. that's a problem of conventional bobbins - all section walls have the same height. for our purposes, central walls must be _lower_ than side walls. that's what allows primary to fit. as you americans say, "a picture worth thousand words" , so:
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Post by lamazoid on Mar 16, 2018 10:20:16 GMT -8
drawing also, it's practically confirmed that 3-sectional bobbin (instead of 4) works with the same reliability up to 4000V.
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Post by KevinK on Mar 17, 2018 2:30:16 GMT -8
I am sure I can reduce the size of those. What I want to know is what the wiring scheme is in regards to the sections. Do you wind the primary over the secondary, etc?
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Post by lamazoid on Mar 17, 2018 3:06:00 GMT -8
I am sure I can reduce the size of those. What I want to know is what the wiring scheme is in regards to the sections. Do you wind the primary over the secondary, etc? yes, primary over secondary, then i usually vacuum-pot them into silicone compound. look the pictures at the bottom of page: ecdinside.info/test/мини-инвертер-на-uc3845/
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Post by lamazoid on Mar 17, 2018 4:42:22 GMT -8
drawing of 3-section bobbin
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Post by retiredat55 on Mar 17, 2018 4:59:14 GMT -8
lamazoidWhy can't I open your pics? I get an error.
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Post by lamazoid on Mar 17, 2018 5:18:23 GMT -8
lamazoidWhy can't I open your pics? I get an error. hmm i have no clue. thats regular forum attachments. maybe you should try different browser ?
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Post by Gary Lecomte on Mar 17, 2018 5:49:05 GMT -8
They Open for me.
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Post by retiredat55 on Mar 17, 2018 13:39:35 GMT -8
I don't know what happened, but it works now!! Thanks Lamazoid and Gary.
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Post by KevinK on Mar 22, 2018 1:54:55 GMT -8
Im going to try to modify the bobbins I have. If not my brother has a 3D printer.
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Post by KevinK on Mar 25, 2018 19:50:47 GMT -8
I am sure I can reduce the size of those. What I want to know is what the wiring scheme is in regards to the sections. Do you wind the primary over the secondary, etc? yes, primary over secondary, then i usually vacuum-pot them into silicone compound. look the pictures at the bottom of page: ecdinside.info/test/мини-инвертер-на-uc3845/I just read this again. Silicone? Not epoxy?
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Post by lamazoid on Mar 26, 2018 7:26:58 GMT -8
I just read this again. Silicone? Not epoxy? yes, 2-component silicone resin. look at the photos, they are potted together, then divided. this resin is easy to break by hands.
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