Home | Map | Projects | Construction | Soldering | Study | Components | 555 | Symbols | FAQ | Links Oscilloscopes (CROs) Setting up | Connecting | Measuring | Timebase | Y amplifier | AC/GND/DC Next Page: Power Supplies Also See: AC‚ DC and Electrical Signals | Circuit symbol for an oscilloscope | | Cathode Ray Oscilloscope (CRO) Photograph © Rapid Electronics | An oscilloscope is a test instrument which allows you to look at the ’shape ’ of electrical signals by displaying
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Cathode-Ray Oscilloscope OBJECTIVE: To learn how to operate a cathode-ray oscilloscope. APPARATUS: Cathode-ray oscilloscope‚ multimeter‚ and oscillator. INTRODUCTION: The cathode-ray oscilloscope (CRO) is a common laboratory instrument that provides accurate time and aplitude measurements of voltage signals over a wide range of frequencies. Its reliability‚ stability‚ and ease of operation make it suitable as a general purpose laboratory instrument. The heart of the CRO is a cathode-ray tube
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Cathode ray tube is used for producing images‚ when an electron beam hits the surface made out of a phosphorescent‚ and the cathode ray tube is basically a vacuum tube. An example of a cathode ray tube is a computer desktop and the picture tubes in television are similar to the cathode ray tube in television. There are numerous components of cathode ray tube‚ which are the Electron gun‚ Anodes‚ Coil‚ Phosphor-coated screen‚ electronic beam and the spot through which the beam passes through. In a
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10.2 Properties of Cathode rays Aim: to determine some of the properties of the rays which come from the cathode of a discharge tube. Equipment * Two power packs * Two plug-plug leads * One pair of magnets * Induction coil * Four plug-clip leads * Discharge tubes (Maltese cross‚ electric plates‚ rotating wheel‚ screen display) Theory: This experiment is designed to show you the properties of cathode rays as discovered by Sir William Crookes. Method: 1. Connect the
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GREAT DISCOVERIES CHANGE LIVES Do you like watching television? I love it. I do not know what would I do if televisions did not exist. It is interesting‚ in several years‚ they have become a huge part of our lives‚ our indispensables. J.J. Thomson was inspired by some scientists and he provided us the opportunity of having televisions in our lives. Also other scientists improved his thoughts and experiments which leaded to the invention of the television afterwards. It is not that simple of course
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Oscilloscope _ An oscilloscope (also known as a scope‚ CRO‚ DSO or‚ an O-scope) is a type of electronic test instrument that allows observation of constantly varying signal voltages‚ usually as a two-dimensional graph of one or more electrical potential differences using the vertical or ’Y’ axis‚ plotted as a function of time‚ (horizontal or ’x’ axis). Although an oscilloscope displays voltage on its vertical axis‚ any other quantity that can be converted to a voltage can be displayed as well
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The Oscilloscope Objectives: 1.To become familiar with the construction and use of the oscilloscope. 2.To gain experience in making simple measurements using this equipment. Materials and Equipment Needed: Dual Trace Oscilloscope with probes Instructions: Please read this experiment carefully so when you come to the lab you understand some of the basic ideas of an oscilloscope. Become familiar with the documentation for this experiment and the location of the various buttons and knobs on the oscilloscope
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Experiment 4 Measurement of e by Thomson’s bar magnet method. m Apparatus: Cathode ray tube (CRT) with power supply unit‚ one pair of bar magnets‚ high resistance voltmeter‚ magnetometer‚ stopwatch. Purpose of experiment: e To measure the specific charge‚ i.e. charge to mass ratio ‚ of an electron using m Thomson’s bar magnet method. Basic methodology: Electrons in a CRT are deflected in the vertical direction by applying a potential between the vertical deflection plates of the CRT.
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A digital storage oscilloscope is an oscilloscope which stores and analyses the signal digitally rather than using analogue techniques. It is now the most common type of oscilloscope in use because of the advanced trigger‚ storage‚ display and measurement features which they typically provide.[1] The input analogue signal is sampled and then converted into a digital record of the amplitude of the signal at each sample time. The sampling frequency should be the Nyquist rate or better to avoid aliasing
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The Cro Magnons and Neanderthals The Cro Magnons appeared in Africa around 100‚000 years ago and entered Europe 35‚000 years ago. The Neanderthals are traced back to 130‚000 years ago when they appeared in Europe. Cro Magnons are like us in many ways‚ appearance wise we look exactly the same‚ unlike the Neanderthals who were short and stocky with big bones and a slightly larger brain then Cro Magnons. Having a slightly larger brain didn’t mean they were more intelligent then the Cro Magnons‚ the
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