Sunday, May 18, 2014

Day 18

Oscilloscopes 



In this laboratory we wanted to observe the wave behavior of voltage with an oscilloscope. Our voltage source was derived from a frequency generator. We were then able to utilize the oscilloscope to measure the amplitude of each wave in order to determine the voltage.
The picture above is an frequency generator of 96 Hz.  The period was then calculated 0.012 s from the oscilloscope.

 
When the switching the frequency generator to triangular, the oscilloscope produces a triangular wave as shown above.
When switching the frequency generator to square function, the oscilloscope produces a square wave as shown above.

The following video displays how the graph can be enhanced or changed when the dial on voltage measurement is changed.

Oscilliscope with AC or DC power supply.

DC power supply displayed the distorted wave as shown above.  It was determined that the voltage was around 30 mV

The AC power supply displayed a sinusoidal wave as shown in the above picture.  This was expected since in an an AC current the the voltage is alternating positive to negative.  The voltage on this wave was measure to be 15 v and the period t=(8.5*.002)=0.017s, and finally the frequency f=1/t=1/0.017= 58.8Hz.


We set the function generator to 60 Hz and connected it to Channel 1 and the AC transformer to Channel 2.  A Circle was produced from both inputs.  This was because the frequency generator was interacting with the sinusoidal waves of the AC current.



The Mystery Box



The Mystery box was an unknown object that was connected to the oscilloscope.  Each color was connected to each on another in different patterns.  this was done and observed in order to determine what the mystery box was.
The picture above is the wave produce from the black to yellow connections. 

After many observations, each connection made was drawn above along with their periods and voltage.  Even after scrutinizing each wave it was difficult to determine  what the mystery box was.

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