A schematic diagram refers to a particular type of circuit design which uses standard electrical/electronic symbols rather than images to demonstrate how a circuit (or portion of it) works. Below is a typical 3-wire motor controller circuit using a normal short stop stop - start pushbutton station utilizing a schematic diagram. (Momentary here means the button/switch you trigger will go back to its default place once you physically let go of it, usually by a spring that forces the button/switch to get this done.)
Here's a technical variant of a schematic diagram. The major intent of this diagram will be to show the logic (speaking to electric control) of a circuit. This diagram is the one that I mostly encounter in my own line of work, and it is extremely successful for troubleshooting problems or learning the way the circuit functions. Some circuits are so huge that most types of schematic diagrams have to be recorded in increments in novel form (generally with coded numbers so info can be simpler found). Again, here's the identical precise circuit as the first 2, however, considering it in ladder type.
Pictorial schematic diagrams, or graphic circuit diagrams are essentially the exact same thing with the exact identical function, however they use images of components within the circuit instead of symbols. Again, here's the exact specific circuit (virtually except a controller was added and they are utilizing conductors L1 and L3 rather than L1 and L2.
Much less mess, right? I've got enough info in each one of these diagrams to know exactly what this circuit will do and where to look for issues. Hope this helps. ( Note: don't confuse lecture or circuit diagrams together with wiring diagrams; wiring diagrams will typically demonstrate images of components like the pictorial, and also how the whole or part of a circuit is wired. The difference is that wiring diagrams usually put an emphasis on actual physical place of necessary elements relative to each other that essentially tell a layman Just What to do concerning the wiring. )
Here is another schematic diagram demonstrating the identical circuit, connections and components and it looks different but they both fall into precisely exactly the same category.
Consider it this way; a circuit diagram is any kind of diagram which illustrates the way the circuit operates where the primary objective is the proper wiring of components and their connection to each other rather than physical place relative to one another or planning prototypes. However, in some uses Assessing diagrams can be challenging so choose this as overall advice. I have discovered this is particularly true when dealing with much more complex circuits and electronic equipment. I'm likely to work with a more straightforward but average industrial circuit since these circuit setups are the exact same, but nevertheless where you're able to see how each type of diagram indicates the operation of the circuit in their own ways.