Meeting 15:
We did circuit analysis with
LabVIEW III, in which we made a Virtual Instrument (VI) that produced the
current I (unit is A for amp) that goes through a circuit with six resistances R1
to R6 (units are Ω for Ohm), as shown in the link from E-syllabus,
when a battery voltage V (unit is V for volt) was applied. The seven input
elements (V and R1 to R6) are implemented with Numeric
Controls, and the four output elements, I and V2,V4,V6
–the voltage across R2,R4,R6,respectively,
were implemented with four Numeric Indicators. Then equations for these outputs
are given in the link from E-syllabus. Please use the equations (expressions
not involving the || parallel operation symbols) to implement your graphical
program, starting from the denominator R5+R6. After
making a sketch of the circuit using Paint, and
copying it into the Front Panel, numeric controls and numeric indicators are
placed next to the corresponding elements in the sketch. Then in the Block
diagram, move all input elements to the left side, starting with the battery,
then the resistors in vertical order from 1 to 6.
Logbook
Just to remind that the logbook is a very important
component of the course and will be evaluated, together with the final exam
they count 20% of the course grade.
You should record the logbook on a daily basis, with pages
numbered and dated, about two main topics:
-Discussions
and findings about projects, collectively or individually
-Answers
to questions posted here in the class notes and other learning conclusions you
found by doing activities related to this course.
The next logbook due date is
Logbook questions:
1-Assume a V=9V, R1 to R6=1 Ω; what are
the values for I, V2, V4, V6 from the equations? What are the values you got
from the Virtual Instrument?
2-How many times you found a product and a
sum between same the inputs, and then they are divided by each other?
3-Is there any common pattern in obtaining
the voltages V2, V4, V6? What is that?