Introduction
For this experiment, the use of equipment such as oscillators and function generators were used in order to calculate forms of AC waves. Waves are visual representations of the variation of a voltage or current over time and are used in many applications throughout technology.
Aim
The aim of this laboratory was to be able to measure the voltage in a circuit over a specific time using equipment such as an oscilloscope, and using it to look at the SINE wave that is generated, and also calculate the RMS voltage from the peak voltage and vice versa.
Methods and Materials
PU-2000 workstation
Dual trace oscilloscopes
Fuction generator
DMM
Frequency counter
Set of patch cords
Connect the output of the function generator to the vertical input of the oscilloscope, set the sine wave to 1000Hz to find the horizontal sweep, which was 2msec.
Adjust the output amplitude of the function generator to cover full height of the screen. Then count the number of peak to peak divisions which where 8.
Convert the peak to peak voltage which equals 0.8 V.
Convert the measured voltage to equivalent peak and RMS values which gave 0.4V and 0.3V.
The oscilloscope had to be disconnected from the function generator, with the VOM inserted instead, giving a AC voltage of 0.209 V.
This oscilloscope was again connected to the function generator and the period of the wave form counted 2.5 divisions.
This was then converted to period time by multiplying the number of divisions by the scopes horizontal setting. Period = sweep rate (0.4) x number of divisions (2.5) = 1ms.
This was converted to frequency using f = 1/t which equalled to 1000Hz.
A typical wave which was seen on the oscilloscope screen was as follows:
A labelled diagram to help understand the graph was shown to help understand the wave:
Discussion
From the results found, and applying them into the formulas, the frequency of