Lab: Source-free RC and RL Circuit( April 18, 2017)

Date: April 18, 2017

The Source-free RC Circuit; Passive RC Circuit Natural Response; Passive RL Circuit Natural Response

Activity 1:

For activity one we determined what time would be if there was one percent discharge voltage left.

In the above picture, first we determine the voltage equation for a source free RC circuit. Then we say that the voltage is at 1 percent and solve for time.

Lab 1: Passive RC Circuit Natural Response

Pre-lab:

In the above picture we estimated the time and voltage across the capacitor. There is also the schematic for our circuit with the resistances being R1=.982k-ohm and R2=2.16k-ohms and the capacitor being 22 microF.

This is a picture of our circuit.

This is the picture of the capacitor voltage response.

This is the calculation for the time constant when being discharged.

This is the capacitor voltage response for the circuit in figure b

Lab 2: Passive RL Circuit Natural Response

First we measured the response for the inductor.

Then we used that time to calculate what the inductors value is.

In conclusion:

In today’s labs, we were able to see the response that the RC Circuit had when being discharged. Also, we were able to see the same thing for the inductor being discharged. With that information we were able to determine that the value of the inductor was about 5.28mH.