Overview Of A Function Generator. It is essentially piece of test gear for anyone that wishes to test or even develop electronic devices.
Essentially it is something that produces a variety of kinds of waveforms that are used to test and build many different sorts of electronic apparatus. You may also see it referred to as a signal generator, because it will make a variety of waveforms or functions.
That previous description probably offers a better idea of what a function generator actually does. Contingent on what the purpose of the device you are developing or testing, will ascertain what type of function or wave you need to test out completely.
Typical functions which you will see are Sine Waves, which nearly everybody will have heard of, but also frequently used functions or waves, are Saw Tooth, Square Waves and Triangular. I'm sure there are many more but again the equipment you are analyzing will be the deciding factor as to which of those are essential. Also the size and repetition of the waves generated are generally set on the function generator, normally by the turning of a button or flicking of a switch.
Whilst most Function Generators are good pieces of equipment that sit in your test area, you can also get software for the computer that will perform a similar task. It is a matter of personal preference as to whether you are more comfortable using a box that you can touch, handle and push buttons on or whether you might be happy to alter settings and parameters in a computer program. The results are the exact same though.
If you want to double check that the correct wave form is being created, simply connect to an oscilloscope.
If you are considering a Function Generator, then I'm sure I don't need to describe an oscilloscope. But if I do, what you will get is a visible representation of the output signal. If you have ever seen ER or any other hospital performance on TV, that gadget where you can see the heart beat, well that's a kind of oscilloscope. And guess what, the heart will be the function generator.
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