#Cathode ray oscilloscope ppt generator

To see the waveform of the input signal, it is essential to spread it horizontally from left to right, which is done by applying a saw-tooth voltage wave to X-plates. The signal is to be viewed on the screen being applied across the Y-plates of CRT. This line presents in the vertical amplifiers of high frequency oscilloscopes. High Voltage (HV) Supply – It supplies the high voltages (of the order of few thousand volts) required by CRT, for acceleration as well as relatively low voltage for the heater of the electron gun, which emits the electrons.ĭelay Line – The purpose of the delay line is to delay the vertical signal enough to keep it from reaching the CRT deflection plates before the horizontal circuits are running. Low Voltage (LV) Supply – It supplies the required operating voltages (of the order of few hundred volts) to the all circuits of the oscilloscope. Trigger Circuit – The trigger circuit produces trigger pulses to start horizontal sweep.

#Cathode ray oscilloscope ppt generator

Sweep / Time Base Generator – It produces the saw-tooth voltage waveform, which is used for horizontal deflection of the electron beam. Horizontal Amplifier – The horizontal amplifier is fed with a saw-tooth voltage which is then applied to horizontal deflection plates. Vertical Amplifier –The vertical amplifier amplifies the waveform of the signal to be viewed. It generates and accelerates an electron beam, deflects the beam to create the image and contains a phosphor screen where the electron beam eventually becomes visible. Oscilloscope Parts and their FunctionĪn oscilloscope consists of following major parts (see the block diagram) −Ĭathode Ray Tube (CRT) – The CRT displays the quantity being measured. An oscilloscope is a device which allows the amplitude of electrical signals (current, voltage, power etc.) to be display as a function of time.