View Single Post
Old 06-04-2009, 04:50 AM
Armagdn03's Avatar
Armagdn03 Armagdn03 is offline
Silver Member
Join Date: Oct 2007
Posts: 913
Alright, one more free post before I start collecting manditory donations.

All of this can information can be found by review of basic electrical principles, and correlating them.

All interactions between inductance and capacitance (or other inverse conditions) have their energy "transformation" characteristics governed by certain predictable correlations. All this complicated talk basically comes down to time constants, and knowing how resistance affects a system.

A high resistance in an inductor means a quicker time constant, meaning it reaches its maximum current more quickly. This is because its maximum current (at a given potential) is lowered by the high resistance, so the current reaches its "cealing" faster. A low resistance coil has a larger time constant, taking more time to reach maximum, however maximum is much higher.

If you look at the equation for energy in an inductor.... energy = 0.5L x I^2, you see that as current doubles, energy in the inductor increases by a factor of 4.

basically all im saying is that you want conditions favorable for getting high current, in a quick time, this equates to low resistance coils.

However when an inductance collapses, its speed of collapse is dictated by the impedance of what it is collapsing into, this can be the impedance of a capacitor, or a resistive element. The higher the impedance, the quicker the collapse. No energy is lost if you have a high impedance (heating element?) being driven by the collapse of an inductor, simply the speed at which the collapse happens is changed. The fulcrum of this change is the impedance, dictating how fast in simple relations anybody can look up.

As you can see, low resistance in charging an inductor is favorable, and a resistance on its discharge becomes a "fulcrum" dictating the voltage rise from the inductor.

In an LC circuit, you cannot have this, You cannot have high resistance, then low resistance, you have either one or the other. And you have polarity reversals, which can be problematic in other systems. But if you could somehow develop a "one way tank circuit" as this circuit shows, then you can have your cake and eat it too. This is an incredibly simple addition to the "boost converter", and can be used to drive any inductively or capacitively stable load.

(Field symetry really shows up here, as you can see high conductance on the growth cycle, and high resistance on the decay cycle, they are inversely related, just as capacitance and inductance are. )

Just dont discharge back into a battery, this is a waste of energy, capacitive elements are much more efficient. Study up on impedance matching, and other related topics. I wonder how many people would have realized they had ou if then knew about impedance matching. 3v at 5000 amps is alot of power, but you might never know it.

This is just scratching the surface.

Last edited by Armagdn03; 06-04-2009 at 04:53 AM.