Cathode ray oscilloscopes

For the study of waveforms, we use oscilloscopes. Various parameters such as peak voltage, frequency, pulse width, phase difference, delay time, rise time, fall time etc. can be measured accurately using oscilloscopes. The main part of an oscilloscope is a cathode ray tube. Here electron generation can be achieved by heating a cathode. Focused electron beam is then accelerated towards a fluorescent screen. The screen glows at the point at which electron strike. For this operation, we generally use a triode, an electron lens, magnetic and electric fields and a screen. Deflection amplifiers and good display systems are also required here. Most of the oscilloscopes currently in use are dual trace oscilloscopes which can display two waveforms. Comparison of two waveforms and analysis can easily be done by using such oscilloscopes.