EE251 lab5 Malone Fall 2017 October 24 2017

EE-251 lab-5 Malone, Fall 2017

October 24, 2017 SLO breaks record at 108 degrees — and the hot weather isn’t over Temperatures reached 108 degrees in San Luis Obispo, shattering the previous record of 103 set in 1959, according to PG&E meteorologist John Lindsey. Hottest place in the USA and perhaps the world on that day !!!

V(t) 4, 000 3, 500 3, 000 2, 500 2, 000 1, 500 1, 000 0, 500 0, 000 0 Prelab problems 1 2 Prob 2 3 4 5 time constants Prob 1 V(t) 4, 000 3, 500 3, 000 2, 500 2, 000 V(t) 1, 500 1, 000 0, 500 0, 000 0 1 2 t 3 4 5

Vc(tau) vs tiime constant (“ 1” = one time constant t Vc(tau) 0 0 1 0. 632 2 0. 865 3 0. 950 4 0. 982 5 0. 993 1 0, 9 0, 8 0, 7 0, 6 0, 5 0, 4 0, 3 0, 2 0, 1 0 0 0, 5 1 1, 5 2 2, 5 3 3, 5 4 4, 5 So, how far vertically do you move in on time constant 5

Capacitor will charge and discharge with an exponential relationship

You get to use an oscilloscope for this lab. (note: In your lab we will see a square wave)

Complete instructions are in Polylearn

LT spice model of procedure 1 with 40 k ohms

Showing Vc and Ic

Running the input at twice the frequency

Capacitor will charge and discharge with an exponential relationship

For DC, what do you do with capacitors and inductors ?

Look at your discussion questions before you do the lab And think about next weeks pre-lab and lab math !!

First prelab problem for lab-6 Do you remember how to do math with complex numbers both polar and rectangular form?