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Post by lamazoid on Mar 12, 2008 7:47:48 GMT -8
Ivan i thought your circuit is not working. If this is wrong, of course you can use it. It will not give much power anyway, but you can use it for testing.
You can replace surge arrester with your own like that cross of metal stripes used in you gun. This will work, but not very reliable. It can cause things like capacitor explosion, due to unstable breakdown point, cnanging with atmospheric pressure and air humidity (because this is an open air gap) But again, it's suitable for testing purposes.
Ferrite core can also be replaced by iron core (used in commercial stun gun) but this will result in different number of turns and propably less ionization efficency (output spark gap effective length). You need about 35 turns primary and 2000 secondary for this. Oil fill means what it says, e.g. using oil instead epoxy or wax. The best is special transformer oil, but if you can't get it - regular motor oil works fine.
I think you should assembly a working prototype with ANY parts you have around (replace missing parts with homemade) and only then make a final device with good parts. Later i will show a photo of fully disassemsbled stun gun of my design.
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Post by lamazoid on Mar 12, 2008 8:07:05 GMT -8
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Post by Deleted on Mar 13, 2008 1:52:36 GMT -8
Wow ..! guys I never imagine get much help, How much money I owe? Perhaps this weekend try to rebuild again the stungun. GARY_ I send you an email if you are in agreement, thank you. LAMAZOID_ you believe oil should be synthetic (not mineral) Which is best? Transmission (W90 heavy), W40/W50 engine (middle), or W15 hydraulic (light) I think the hydraulic oil penetrate well between layers of the coil HV.
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Post by lamazoid on Mar 13, 2008 4:25:19 GMT -8
I have used transmission oil. But i believe any other will work. Anyway i do not recommend you to make LAYERS without vacuum. Make a sectional coil instead (like one on the photo).
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Post by Deleted on Mar 13, 2008 4:56:06 GMT -8
Ok, I will use the method of wax, which can be make at home with good results, Thank you!!!!
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Post by Deleted on Mar 13, 2008 5:07:09 GMT -8
Here is the problem, the coil does not have insulation between layers, it is achieved through vacuum. rapidshare.com/files/98709880/HV_shorting.rar.html After all this time I know what was the problem, now I have to do it again but with a vacuum poted. Gary please, can you tell me how to make vacuum at t2? Using the method LAMAZOID is also good too. When I have time I will again, but the problem I have now is the capacitor .22uf/630v I need greater insulation, 5 x 1uf/630v series is not working ... Well thank you very much and forgiveness by the double post! A 630 Volt, 0.22uf Capacitor should be OK. There should't be any need to have a Higher voltage one. What is your DC Output woltage after the diodes from T1? Lamazoid method for potted T2 is OK, as long as you have a LOW WATER CONTENT Wax. Before I started using Epoxy for potting Flybacks, The best one I found was Blue in color. But Color has little to do with Water Content. Vacuum Potting is really a problem for most people. I have a Good Vacuum pump that cost about $450.00 Also I have a Custom made Vacuum chamber about 1 Cubic foot in volume and made of 1/2 inch thick Aluminum Plate. It attains a Vacuum of about 29 inches of Hg. I can post a picture of these if you want. Argentina, Interesting: One of the places I was thinking about going to next winter. Youn in summer now, but we are in winter. (Actually just turned to Spring) Gary can you post pictures of the vacuum system please? I need a high vacuum pump? I can make engined refrigerator? Or is little vacuum power? Thak you.
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Post by Deleted on Mar 13, 2008 5:55:16 GMT -8
GARY what is BIFULAR is the same as bifilar? is wound two wires at once as if it were one? I can not understand that word BIFULAR. Thank you!
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Post by lamazoid on Mar 13, 2008 6:26:29 GMT -8
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Post by Gary Lecomte on Mar 13, 2008 6:36:29 GMT -8
GARY what is BIFULAR is the same as bifilar? is wound two wires at once as if it were one? I can not understand that word BIFULAR. Thank you! Yes the Same Thing. I spelled it the way one book I have Spelled it. If its wrong, I'm sorry. I will see about posting a picture of my Vacuum system, later today.
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Post by lamazoid on Mar 13, 2008 6:44:48 GMT -8
Method of making surge arrester from glass fuse: Fuse itself
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Post by Gary Lecomte on Mar 13, 2008 6:49:28 GMT -8
You cn probably obtain as much vacuum as either of these devices by just sucking with your mouth.
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Post by lamazoid on Mar 13, 2008 7:08:43 GMT -8
It's a joke or what? I'm using water jet pump for my projects and it works. As to efficency, it provides vacuum near 60 mm (considering 0 mm is complete vacuum), but at this point epoxy components start to boil producing gas bubbles, so practical value is even higher level, near 150mm or so. The transformer on above photo, made using this pump provides 40-45mm sparks without shorting internally, e.g. more than it's linear size (38mm) ! I don't know what vacuum man's lungs can produce Maybe this is really curious thing.
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Post by Gary Lecomte on Mar 13, 2008 7:45:13 GMT -8
It's a joke or what? I'm using water jet pump for my projects and it works. As to efficency, it provides vacuum near 60 mm (considering 0 mm is complete vacuum), but at this point epoxy components start to boil producing gas bubbles, so practical value is even higher level, near 150mm or so. The transformer on above photo, made using this pump provides 40-45mm sparks without shorting internally, e.g. more than it's linear size (38mm) ! I don't know what vacuum man's lungs can produce Maybe this is really curious thing. Your Figures are correct, but for simplicity, my Vacuum gauge Reads in reverse. Lamazoid, YES, Your Obtaining a Really Good Vacuum. Better than I would expect. According to my Vacuum gauge, It considers Normal air pressure to be Zero. A Total Vacuum is about 30" of Hg. (about 760mm/Hg.) (There is about 25.4mm/Hg per inch of Hg.) My Vacuum pump obtains better than 28" of Hg (700mm/Hg) Sometimes near 29" of Hg. Sucking with my Mouth and using my tongue to block the tube in between sucking, I can get about 18" of Hg. (450mm/Hg) However this would still be useful for potting with wax. Also it is Better to create a vacuum and hold it for about 10 to 20 seconds, than release it. Than repeating this process 5 or 10 times. Each time you release it, it sucks more wax into the wires. The More times you do this the greater the penetration will be. On the Other hand, Continuous Really High Vacuum, Causes the wax or epoxy into "self-Gasing". This is counter productive and should be avoided. Hope this helps........Gary
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Post by Deleted on Mar 14, 2008 2:04:03 GMT -8
Hey guys very good information, thanks!, But you believe these methods are better than an engine of a refrigerator? Secondly, putting coil pot, fill it with epoxy and place in the bell-jar as in this picture img291.imageshack.us/img291/8353/belljarjw1.jpgThis is correct? Look I have these surge arrester ... img291.imageshack.us/img291/8353/belljarjw1.jpgAre Canadian manufacturing but is out of service, parts are obsolete, but I think that I can use for my stun gun, the label is JOSLYN 1093 "2027-23-BY"
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Post by Deleted on Mar 14, 2008 2:26:04 GMT -8
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