A schematic diagram refers to a specific sort of circuit design that uses standard electrical/electronic symbols instead of images to show how a circuit (or part of it) functions. Below is a typical 3-wire motor controller circuit employing a normal momentary halt - start pushbutton channel employing a schematic diagram. (Momentary this means the button/switch you trigger will return to its default place once you physically let go of it, typically by a spring that forces the button/switch to get this done.)
Following is a version of a schematic diagram. The major aim of this diagram is to show the logic (speaking to electric control) of a circuit. This diagram is the one I mostly come across in my own line of work, and it's very effective for troubleshooting problems or learning the way the circuit functions. Some frequencies are so huge that many types of schematic diagrams need to be read in increments in book form (generally with coded numbers so that info can be simpler located ). Again, here is the identical specific circuit as the first two weeks, however looking at it in ladder type.
Think of it in this way; a circuit structure is any type of diagram which demonstrates the way the circuit functions where the major objective is that the appropriate wiring of elements and their relationship to each other rather than physical location relative to one another or intending prototypes. Nevertheless, in some applications Assessing diagrams can be challenging so take this as general information. I've found this is particularly true when working with much more complicated circuits and electronic equipment. I'm going to work with a simpler but typical industrial circuit because these circuit setups are exactly the same, but nevertheless where you can observe how each sort of diagram indicates the function of the circuit in their own ways.
Pictorial design diagrams, or graphic circuit diagrams are essentially the same thing with exactly the identical function, but they use pictures of components inside the circuit instead of symbols. Again, here is the exact same specific circuit (virtually except a control transformer was inserted and they're utilizing conductors L1 and L3 rather than L1 and L2.
Here's another schematic diagram demonstrating the identical circuit, connections and components and it looks different but they both fall into the identical category.
Less mess, right? I have enough information in every one these diagrams to know exactly what this circuit will do and also where to start looking for issues. Hope this helps. ( Note: do not confuse circuit or schematic diagrams together with wiring diagrams; wiring diagrams will often show pictures of components such as the pictorial, and how the whole or part of a circuit has been wired. The difference is that wiring diagrams typically put an emphasis on actual physical place of necessary elements relative to each other that essentially tell a layman exactly what to do about the wiring)