Lance Posted December 14, 2004 Share Posted December 14, 2004 Considering YT2095 has created a few challenges I thought I would make one myself The winner will be the one with the highest score. The scoring formula will be W/VA=S. W= the weight your electromagnet can continuously hold (in grams) V=input voltage A=current your magnet draws Example: Your electromagnet can hold 1000 grams with a 12v power supply drawing 10A. 1000/120=8.33 The only rules are you MUST make the coil yourself. Other than that you can use any core, wire or power supply. Pictures of your setup would be preferable. Link to comment Share on other sites More sharing options...
5614 Posted December 14, 2004 Share Posted December 14, 2004 well a nice soft iron core with thousands or twirls. hmmmm, are we allowed to use a super conductor???? that'd be quite cool! can we have an input voltage of say 12V and then put that through a transformer up to a few hundred volts? all you really need is a small voltage and high current (or the other way around) and that'd keep your score up in a superconductor if you have 0 ohm resistance and say 12V then you have 12/0 A... but you cant do 12/0 so what current do you have? Link to comment Share on other sites More sharing options...
Lance Posted December 14, 2004 Author Share Posted December 14, 2004 can we have an input voltage of say 12V and then put that through a transformer up to a few hundred volts? The voltage is the input voltage of your electromagnet. in a superconductor if you have 0 ohm resistance and say 12V then you have 12/0 A... but you cant do 12/0 so what current do you have? No, if there was 0 resistance then theoretically it would draw unlimited power. Most power supplies are current limited though. Link to comment Share on other sites More sharing options...
YT2095 Posted December 15, 2004 Share Posted December 15, 2004 Sounds like a neat challenge 1 question though, can the Former be any shape? IE/ like a U magnet (aka Horseshoe)? Link to comment Share on other sites More sharing options...
Lance Posted December 15, 2004 Author Share Posted December 15, 2004 Ahhhhh, good question. That would double your weight. I want to make this challenge as flexible as possible though, so yea, go for it. Link to comment Share on other sites More sharing options...
YT2095 Posted December 15, 2004 Share Posted December 15, 2004 Shhhh.... you`ll give the game away! Link to comment Share on other sites More sharing options...
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