lab24 - LAB# 24 THE CATHODE RAY OSCILLOSCOPE INTRODUCTION:...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
LAB# 24 THE CATHODE RAY OSCILLOSCOPE INTRODUCTION : One of the most basic instruments for all modern science and technology is the cathode ray oscilloscope (C R O). The purpose of this experiment is to teach you how to use a CRO, and to use the instrument to look at a variety of signals. In particular, several different sources will be displayed and compared by means of the CRO. The heart of the CRO is simply an evacuated tube very similar to a television picture tube. A great application called OSCILLOSCOPE can be found on the LAB COMPUTERS -use this program as a tutorial about the CRO. The instrument we will use has two sets of deflecting plates, so that the beam of electrons can move either from side to side (x-deflection) or up and down (y-deflection). That's basically all there is to an oscilloscope. There is a special circuit (called the sweep) which automatically increases the voltage on the horizontal plates until the spot moves across the screen from left to right and then quickly switches back to zero voltage and repeats itself. You can "sweep" the beam across at fast (100,000 times/sec.) or slow (10 times/sec.) speeds so you can get a good picture of the vertical signal. In addition, there are amplifiers to make the signal larger and move it on the screen, but nothing else that
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/29/2012 for the course PHYS 227 taught by Professor Rabe during the Fall '08 term at Rutgers.

Page1 / 4

lab24 - LAB# 24 THE CATHODE RAY OSCILLOSCOPE INTRODUCTION:...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online