What exactly is a function generator and what is it used for?. It is actually piece of test apparatus for anyone that wants to check or even assemble electronic devices.
When you come right down to it it is something that generates a mixture of forms of waveforms that are used to trial and develop many different types of electronic gear. You may also see it labeled as a waveform generator, because it will produce a variety of waveforms or functions.
That last explanation probably offers a better image of what a function generator actually does. Depending on what the purpose of the device you are making or testing, will determine what type of function or wave you require to test out completely.
Typical functions which you will notice are Sine Waves, which most people know, but also frequently used functions or waves, are Saw Tooth, Square Waves and Triangular. I'm sure there are many more but again the circuitry you are checking will be the deciding factor as to which of those are necessary. Also the size and repetition of the waves created can be set on the function generator, normally by the turning of a button or flicking of a switch.
Whilst most Function Generators are nice items of equipment that sit in your study, you can also get software programs for the PC that will execute a similar task. It is a matter of personal choice as to whether you will be a little more comfortable having a box that you can lay a hand on, feel and push buttons on or whether you might be happy to change controls and parameters in a computer program. The results are similar though.
If you want to double check that the right wave form is being generated, just connect to an oscilloscope.
If you are considering a Function Generator, then I'm sure I don't need to explain an oscilloscope. But in the event that I do, what you will get is a visible representation of the output signal. For those who have ever watched ER or any other hospital program on TV, that thing where you can see the heart rate beat, well that's a kind of oscilloscope. And guess what, the heart will be the function generator.
How To Operate A Function Generator
That last description probably gives a better idea of what a Function Generator actually does. Depending on what the purpose of the device you are building or testing, will determine what type of function or wave you need to test out fully.
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