Posted by admin | Posted in Uncategorized | Posted on 20-01-2011
Tags: professional magnetic, professional magnetic knife holder, professional magnetic name tags, professional magnetics, professional magnetics leeds, professional magnetics media ltd
Professional Magnetic
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| The Carpentry Blog |
Can any professional electronics engineer help me with this?
This is my idea, but I don’t know if it will work.
I know that isolation transformers put out the save voltage that goes in, and step-ups increase the voltage, but reduce the wattage (I thing it is the wattage), but is it true that if there are 2 outputs that are the same as the input, the magnetic will effect both the same as if they are the only secondary coil, so that they will both be 110 and have the same wattage as the input? If they do, can they be put together after to increase the wattage? Is so, can this be done repeatedly until there is enough power to power a building for no more then it takes to power a lightbulb?
The idea is good, but I do not know if the theory is actually workable.
In physics, the law of conservation of energy states that energy can be neither created nor destroyed, but only transformed. In electrical transformer action, power (measured in watts) cannot be created.
The most basic law of electricity is Ohm's Law which states that a voltage across a load will cause a current to flow through the load.; E = I x R, with E being the voltage, I is the current, and R is the load.
A second part of Ohm's Law is that P = I x E, with P being power, measured in watts.
The inductive property of a transformer is that energy is set up in a primary coil, which causes energy in the secondary coil. If the number of turns in each coil is the same, then it's a 1:1 transformer, and the same voltage is found on both sides, the function of which is simply isolation from the common power grid.
But let's say that the secondary has twice the coils as the primary. Then it's a step-up transformer and the voltage out of the secondary will be twice the input on the primary. Now, remember that the current is determined NOT by the current in the primary, but the current caused by the voltage across the load hooked up to the secondary.
So, you have a primary in which you've hooked up 120v. The secondary produces 240v. You connect a light bulb from, say, England that draws 1/4 amp. That's 60 watts. On the primary side of the transformer, there will be 1/2 amp of current flowing. Still 60 watts. So, in a step-up transformer, you step up the voltage but step DOWN the current, and vice versa.
Again, it's not the current in the primary which determines the current (and power) in the secondary, but the demand of the load in the secondary which determines the current which flows in the primary.
