Peter,
I'm trying to figure out if it is a must for me or not to buy this DVD of yours. I'm on a tight budget and there are some concearns about the explanation you give. so in order for me to decide if it is worth the money i have to cut through the marketing "glazing" and to really know that i can learn something by it that i can not anywhere else... generally the information is present if you try hard enough to find it.
anyway, take a look on
powerlabs where sam barros shows his can crusher project. in it he says:
Quote:
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All of them share one thing in common: The use of a large, bulky, high-voltage capacitor to deliver, through a spark gap, a massive electrical impulse to a coil of wire inside which the can is inserted. This enormous current induces an even larger current (by transformer effect: Suppose the coil has 3 turns of wire. The can, representing a single turn, will thus have a current that is 3 times as large induced on it) on the thin aluminium surface of a metal can. This rotating current (also known as an eddy current) has a magnetic field associated with it (proportional to the current involved), which, being the same polarity as the field on the coil, will cause the can walls to be repelled and hence to collapse in upon themselves.
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so even if teals system uses a electromagnet to pull on a piece of iron, wich lacks its own magnet field, the eddy currents created will AS I SEE IT produce a back emf in the coil the ordinary way? correct me if im wrong here.
maybe that the back emf is present but way smaller than ordinary?
OR there are some other things in work here.
My first
blogpost on teslas battery-operated tesla-coil, shows how yoy can catch the voltage spike when the current is cutoff. perhaps you guys here can use this setup to power your coils? and to catch the kick-back. i believe that this is what john bedin does?
the motorcoil in teslas patent may be exchanged for your electromagnet and you may skip the primary side of the teslacoil completely. just short circuit the capacitor, open the switch, Cap charges up, dump the charge through a secondary battery bank, and start all over again. simple.
I was planning to build a motor on this design, that pushes on neodymium magnets, and to catch the voltage spike in the cap for recovery. and just by coincident happened to find this info about no or reduced back emf. i figured it might be even more economical in power terms than a bedini looking pulse motor. or EV Gray for that matter...
so i have not made my mind up yet if you guys have something special or not. time will definately tell...
some of you, me or someone else will of course build a working electric motor that brings out a whole lot of mechanical work by just a small ammount of electrical input. this is the ultimate goal for the world, a goal we all should work together to achieve...
best regards,
Lars