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Forum Index : Other Stuff : coil winding
| Author | Message | ||||
| brucedownunder2 Guru  Joined: 14/09/2005 Location: AustraliaPosts: 1548 |
had ago at winding a radio coil. 
Bushboy |
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Gizmo Admin Group  Joined: 05/06/2004 Location: AustraliaPosts: 5031 |
Nice job Bruce. Whats it for, a crystal set? I built a crystal set a couple of years ago, just for fun. I'll take a photo but its packed away. I still remember my first crystal set I had when I was a child. Glenn The best time to plant a tree was twenty years ago, the second best time is right now. JAQ |
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GWatPE Senior Member  Joined: 01/09/2006 Location: AustraliaPosts: 2127 |
Hi Bruce, You may ge able to wind the wire more accurately by first cutting a thread slot into the former first. I am not sure if your lathe has thread cutting facilities. Gordon. become more energy aware |
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| Gizmo Admin Group Joined: 05/06/2004 Location: AustraliaPosts: 5031 |
I used to feed a length of string beside the wire, to give a even spacing. Then unwind the string once the wire was secured. A little varnish will hold it all in place. Building a crystal set is one future project I have for thebackshed. Its kind of a renewable project  , using radio waves instead of solar or wind.
Glenn The best time to plant a tree was twenty years ago, the second best time is right now. JAQ |
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| dwyer Guru Joined: 19/09/2005 Location: AustraliaPosts: 573 |
Good on you Bruce I did build crystal set when l was 12 years old using war aircraft headphone that around 1958 using wireless gang, cardboard tube,and brought back lovely memory at this time my hearing was good and now l am deaf with 80% loss and can't hear my own voice think getting Cochlear implant so yes Glenn let have new kind of project bulding a crystal set 
Dwyer |
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Downwind Guru Joined: 09/09/2009 Location: AustraliaPosts: 2333 |
I to had built one back in high school, I remember winding the wire around a piece of PVC pipe, we put a twist in the wire every so many turns to give different tap points for the coil. I lived in a country area then and there was only 1 station strong enough in signal to be picked up. ABC i think it was. The Germanium diodes are getting hard to find nowdays and not many places stock them. I was told recently that germanium diodes are no longer made anywhere, and its only the stock that is remaining thoughout the world. I understand they have not been produced for over 10 years now. I had required one for a different project recently and had to look hard to locate some. Pete. Sometimes it just works |
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