Thursday, December 4, 2014

Day 25 Last ->Laboratory Experiments of inductor, capacitor, and resistor; Teacher demo of Various V and I vs time graphs with the change of inductor or capacitor or delta frequency. Transformer, Useful Chart>



Shown calculation steps for frequency for Irms and wattage.

Setup all connected in series of RLC circuit 

Setup calculation with ending a percent error analysis.


2 measurement separately for different circuit first RLC.

5000 and 5 second setting for frequency and time frame
 More setup dialog checks

Result of series inductor circuit
Capacitor linked in circuit
Capacitor connected in series detected by Logger Pro



Both conductor capacitor and inductor shown red is inductor and blue is capacitor.


Change decrease frequency by 10 hertz inductance go down for inductor circuit. and Result of changing 60-10hz amplitude goes down by equation 1/2 XL=1/2/pi/f



10 hertz below amplitude go up
10 hertz below amplitude go up


Inductor 16 hertz

Transformer experiment
Outside of Wall Wart


A wall wart(AC adapter) was passed around the class for examination of eddy currents (undesired) and electrodynamical transformations of energy.    A transformer is made of two inductors linked together by an iron core(best if laminated). The iron core manipulates the magnetic flux from one inductor to the other. Eddy currents are the undesired currents created by the changing magnetic field. The Eddy currents increases energy lost and the solution to this is to laminate the plates of the iron core because laminated layer reduces the size of the induced loop and therefore reduces the amount of energy lost. 

Useful Chart
List of equations relative to impedance(R) and phase angles with Resistor, Inductor, and capacitor: with RL, RC, RLC circuit. 

Transformer is made up 2 conductors made up of 2 conductors iron cores
Hook it up alternating voltage->current -> field 
coil reversing 60hz and magnetic field up and down
Magnetize iron core: turn it to U magnet 

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