Uses Of Oscilloscope
- Voltage Measurement: The parameter of voltage which is most easily determined using an oscilloscope is for a sine wave, the peak to peak value. Note: Peak to peak voltage = 2 value [for a pure sine wave].
- Current Measurement: The oscilloscope is high input impedance instrument, and therefore cannot be directly used for the measurements of current. Currents can of course be measured as voltage drops across resistors for this purpose because unless a differential input amplifier is being used as one side of the voltage resistor will have to be at earth potential.
- Phase Angle Measurement: An approximate measurement of the phase angle between two voltages may be performed using the graticule of a dual trace oscilloscope to determine first, the length of a complete cycle, and then the separation of the peaks of the two voltages waveforms on the two traces.
- Frequency measurement: A sinusoidal trace on the face of C.R.O has a peak-to-peak amplitude of 5.6cm and two circles are completed in an X- displacement of 9cm. If the Y-gain control is set at and the time base control at 1ms/cm. Determine the r.m.s value of waveform and it’s frequency.
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