oscilloscope - LAB 4 OSCILLOSCOPE Purpose The purpose of...

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LAB 4 OSCILLOSCOPE
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Purpose The purpose of the lab was to understand the workings of the oscilloscope and to understand how it can be used to examine time dependent voltages in circuit. Description The oscilloscope relies heavily on a cathode ray tube (CRT). In a CRT, a well collimated energetic beam of electrons is created at one end of a glass vacuum tube. The beam is passed through 2 paris of defelction plates. A voltage across one pair of defelction plates will deflect the beam in the vertical direction, while a voltage across the other pair of deflection plates will deflect the electron beam in the horizontal direction. By applying time dependent voltages to the deflection plates the beam can be moved around the screen creating a pattern of light often called a trace. As the light from the phosphor decays quickly the trace must be continually refreshed by the electron beam so that the image on the screen can be observed. Theory
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This note was uploaded on 02/16/2010 for the course PHYSICS V85.0012 taught by Professor Atmar during the Spring '05 term at NYU.

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oscilloscope - LAB 4 OSCILLOSCOPE Purpose The purpose of...

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