Objectives
- To make familiar with the use of PsPice software.
- Verifying ohm`s law using PsPice and also practically perform the experiment.
PSpice is
a SPICE analog circuit and digital logic simulation program
for Microsoft Windows. The name is an acronym for Personal SPICE - SPICE itself
being an acronym for Simulation Program with Integrated Circuit Emphasis.
PSPICE is a circuit analysis tool that allows
the user to simulate a circuit and extract key voltages and currents.
Information is entered into PSPICE via one of two methods;
they are a typed 'Net List' or by designing a visual a schematic which is
transformed into a netlist.
Procedure for Calculating It in Pspice:
Normally the following steps are used for calculating the
values in PsPice schematic:
- Open up Pspice schematics.
iii. Then place the option which you want to
have.
iv.We need dc voltage source. So we write V
(dc).
v. Gnd is used to have ground.
vi. After selecting the things and options we
want, press on simulate.
vii. Then after pressing simulate, we press V and I
mentioned in the menu bar.
viii.And we will get the values of voltage and
current.
Circuits drawn is
pspice:
- When voltage V is 5 volt and Resistor r is 1k.
- After getting so many values we draw a graph.
The ohm`s law states that electric current is
proportional to voltage and inversely proportional to resistance.
I = V / R
APPARATUS
- Resistors
- Digital Multimeter
- Digital Power Supply
- Connecting Wires.
PROCEDURE
Here are the main steps
of the experiment using breadboard, digital power supply and DMM.
- First of all, supply the digital voltage source of specific voltage and find the voltage across the resistor.
- Find the Resistance of the resistors using multimeter.
- After finding R, find the value of I(current) using the ohm`s formula, V=IR.
- After finding the V and I, Repeat the experiment several times.
|
V (DMM)
|
R
|
V/R
|
I=
V/R
|
|
15.18 v
|
5.88 kΩ
|
15.18/5.88
|
25 mA
|
|
5.21 v
|
5.88 kΩ
|
5.21/5.88
|
0.88 mA
|
|
5.22 v
|
46.67 Ω
|
5.22/46.67
|
0.11 mA
|
|
15.17 v
|
46.67 Ω
|
15.17/46.67
|
0.32 mA
|
|
5.22 v
|
50 Ω
|
5.22/50
|
0.10 mA
|
|
15.11 v
|
50 Ω
|
15.11/50
|
0.30 mA
|
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