Here is a specialized version of a schematic diagram known as a ladder diagram. The principle purpose of this diagram will be to demonstrate the logic (speaking to electrical control) of a circuit board. This diagram is the one I mainly encounter in my line of work, and it's extremely successful for troubleshooting issues or learning the way the circuit functions. Some frequencies are so enormous that many kinds of schematic diagrams have to be recorded in increments in book form (usually with coded numbers so info can be easier located ). Again, here's the exact precise circuit as the first 2, however, considering it in ladder type.
Here's another schematic diagram showing precisely the identical circuit, components and connections and it seems different but they fall into exactly the identical category.
Pictorial schematic diagrams, or pictorial circuit diagrams are essentially the exact same thing with exactly the same purpose, but they use pictures of elements within the circuit instead of symbols. Again, here is the exact precise circuit (almost except a control transformer was inserted and they are utilizing conductors L1 and L3 instead of L1 and L2.
Much less mess? I've got enough info in all these diagrams to know precisely what this circuit will do and also where to start looking for issues. Hope this helps. ( Note: don't confuse circuit or schematic diagrams together with wiring diagrams; wiring diagrams will typically demonstrate images of components such as the pictorial, and also the way the entire or portion of a circuit is wired. The distinction is that wiring diagrams generally place an emphasis on real physical location of necessary components relative to each individual that essentially tell a layman exactly what to do concerning the wiring. )
A schematic diagram refers to a particular sort of circuit structure that utilizes standard electrical/electronic symbols instead of pictures to show the way the circuit (or part of it) functions. Below is a standard 3-wire motor controller circuit using a normal momentary stop - start pushbutton station employing a schematic diagram. (Momentary this means the button/switch you trigger will go back to its default position once you let go of this, typically by a spring that forces the button/switch to get this done.)
Think of it in this way; a circuit structure is any kind of diagram that demonstrates how a circuit functions where the principal goal is that the proper wiring of elements and their connection to each other rather than physical location relative to one another or intending prototypes. Nonetheless, in some applications classifying diagrams can be challenging so accept this as overall advice. I have found this is particularly true when working with more complex circuits and electronic equipment. I'm going to use a simpler but average industrial circuit since these circuit setups are the exact same, but where you can observe how each type of diagram shows the purpose of the circuit in their own manners.