Lab Report Day 26 - RLC circuit

RLC Circuit

We first do an example with RLC Circuit involved. 

Resonance in RLC Circuit

An RLC circuit is set up in this part. The theoretical resonance frequency is solved for using values of the inductor and capacitor found with the multimeter. The experimental resonance frequency is found by using the function generator. 

For part two, the experimental impedance is found with the measured values from the multimeter and the formula Z=sqrt((R^2 + (Xl-Xc)^2). That value is then compared to the theoretical value of impedance; Z=R.

For part three, the theoretical frequency and experimental frequency can be found using LoggerPro. 

Lab Set UP

Result Tables

As we can see on the graph, there is a phase angle difference of 180 degrees. If the frequency increases, the amplitude decreases when measuring across the capacitor and the amplitude increases when measuring across the inductor.

Transformers

Transformer can change the voltage input and output a different voltage. It is made of two inductors linked together by an iron core. The iron core redirects magnetic flux in one inductor to the other. When there is a change in magnetic field, it creates a current. In transformers, we do not want the current because it causes energy lost. A solution to this is to laminate the plates of the metal. The lamination reduces the size of the induced loop and therefore reduces the amount of energy lost. 

The picture of a transformer

Summary: 

In today's lab, we learn how a transformer works. We also have more understanding of a RLC circuit.