A device which is used to generate wide range of AC signals is called a function generator. It also goes with the name wave form generator or signal generator.
The function generator generates a variety of periodic and single shot waveforms of different amplitude and periods. Using the function selector buttons we can select the type of waveform which we want.
The property selector buttons/knobs are the buttons/knobs which can help us modify or change the various properties of the wave. Various properties are the frequency, amplitude, symmetry etc.
CATHODE RAY OSCILLSCOPE
Cathode-ray oscilloscope (CRO) is a common laboratory instrument that provides accurate time and amplitude measurements of voltage signals…show more content… An instrument called oscilloscope is used to represent a wave pictorially.
Triangle wave: A triangle wave is a bi-directional non-sinusoidal waveform named for its triangular shape. A triangle wave consists of only odd harmonics, demonstrating odd symmetry. We can approximate a triangle wave by adding odd harmonics of the fundamental, multiplying every (4n-1)th harmonic by -1 (or changing its phase by π), and by rolling off the harmonics by the inverse square of their relative frequency to the fundamental. Usually the positive slope is of the same time as the negative slope which gives a 50% duty cycle.
Square wave:
A square wave is a non-sinusoidal periodic waveform. In a square wave, the amplitude alternates at a steady frequency between fixed minimum and maximum values, and also with same duration at maximum and minimum. We can approximate a square wave shape if the fundamental and third harmonic is present with the fifth harmonic being desirable. When square waves are used as “clock” signals in digital circuits the time of positive pulse width is known as the duty cycle of the
