friday 03. november 2006
Brussels  /\  Requirements: copper tape and a piece of wood, plastic... Really make sure that your copper tape is nicely stuck to your piece of wood, and flatten it.  / \  Next, take some electrical tape (rugged, pure plastic, with a certain thickness and of course functioning as an isolator) / \  Close in the copper tape, isolating it on both sides. Next, take some transparant film, the one you use for slides (hard to see on the picture for obvious reasons)  / \  Take some double sided sticky tape and an old dv-video tape!  / \  As you can see on the photograph, we have "encapsuled" the copper tape, in order to be able to create a small void between the copper tape and the video tape. / \  More copper tape, on the sides. These strips will be the end parts of your resistor, with the video tape in between. / \  Another photograph of the same construction - with the thumb of my cooperating assistant P :-)  / \   / \  Here on the left you see the double sided sticky tape, stuck to the transparant film. Measure the lenght of your video tape, and make it a bit longer than your long piece of copper tape, joining the two little pieces of copper tape.  / \  Stick the video tape on the transparant plastic film full of double sided sticky tape. Very important: make sure that the conductive side of the video tape is orientated towards the copper band, when all is glued together. (The white bits left on the plastic films are just the pieces of paper of the double sided sticky tape.)  / \  We measure! The length of the video tape will determine the resistance of your resistor. Now we stick it all together, the video tape covers the copper tape, but they should not touch without a little pressure...  / \  We have glued it all together and we measure again!  / \  Now two measurements with some finger pressure (the place where your finger pushes on the tape determins the length of the cunductivity, hence the resistance!)  / \  Yeay it works :-) For the usability of the resistor, we soldered on three little pieces of wire on the copper tape. Solder very quickly, because the copper tape is hyperconductive and all could melt.. In case of unclarity - questions can be asked :-) This self made resistor was developed by Johannes Taelman. |
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