more thoughts, and a refreshing of CURRENT KNOWN UNDERSTANDING THAT MATCHED Newman WORK..
I have read this page a few times but keep going back to it.
http://www.electronics-tutorials.ws/inductor/inductance.htmlInductance, L is actually a measure of an inductors “resistance” to the change of the current flowing through the circuit and the larger is its value in Henries, the lower will be the rate of current change
so i had asked some questions however they are answering them self's.
according to a lower resistance coil. its ok to lower the resistance of the wire IF the inductance is very big, its a balance between the length of wire ( resistance) and the inductance ( apposing change in magnetic flux... aka resistance)
Inductors are made from individual loops of wire combined to produce a coil and if the number of loops within the coil are increased, then for the same amount of current flowing through the coil, the magnetic flux will also increase.
As the inductance of a coil is due to the magnetic flux around it, the stronger the magnetic flux for a given value of current the greater will be the inductance. So a coil of many turns will have a higher inductance value than one of only a few turns and therefore, the equation above will give inductance L as being proportional to the number of turns squared N2.
As well as increasing the number of coil turns, we can also increase inductance by increasing the coils diameter or making the core longer. In both cases more wire is required to construct the coil and therefore, more lines of force exists to produce the required back emf.
If the inner core is made of some ferromagnetic material such as soft iron, cobalt or nickel, the inductance of the coil would greatly increase because for the same amount of current flow the magnetic flux generated would be much stronger.
how bout some magnets in the core..................
If the coil is wound onto a ferromagnetic core a greater inductance will result as the cores permeability will change with the flux density. However, depending upon the ferromagnetic material the inner cores magnetic flux may quickly reach saturation producing a non-linear inductance value and since the flux density around the coil depends upon the current flowing through it, inductance, L also becomes a function of current flow, i.
it should be almost impossible to saturate the a core using pulsed DC in a very large coil. and if the best part is that
magnets being the core... there already saturated??? so they just add to the flux and BEMF. also they play more roll than just that as there also SPINNING.
any how... i find it funny that the current teachings ate 100% in correlation to Newman's teachings... and yet some people cant see it...
~Russ