A schematic diagram refers to a particular type of circuit diagram that uses standard electrical/electronic symbols instead of images to demonstrate how a circuit (or a part of it) functions. Below is a typical 3-wire motor controller circuit using a normal momentary halt - start pushbutton channel employing a schematic diagram. (Momentary this means that the button/switch you activate will go back to its default position once you physically let go of this, usually by a spring that forces the button/switch to do this.)
Here is another schematic diagram showing exactly the identical circuit, components and connections and it seems different but they fall into exactly the exact same category.
Here is a specialized version of a diagram known as a ladder diagram. The major point of this diagram will be to show the logic (speaking to electric control) of a circuit. This really is the one I mainly come across in my own line of work, and it's very effective for troubleshooting issues or learning how a circuit functions. Some circuits are so enormous that most types 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 same precise circuit since the first two, however considering it in ladder type.
Pictorial schematic diagrams, or graphic circuit diagrams are basically the exact identical thing with the same purpose, however they use pictures of components inside the circuit rather than symbols. Again, here's the same exact circuit (virtually except a controller was added and they're utilizing conductors L1 and L3 instead of L1 and L2.
Consider it in this way; a circuit diagram is any sort of diagram which demonstrates how a circuit functions where the primary purpose is that the proper wiring of elements and their relationship to each other rather than physical place relative to one another or planning prototypes. Nonetheless, in some applications Assessing diagrams can be hard so take this as general information. I have found this is particularly true when working with much more complicated circuits and electronic equipment. I'm likely to work with a more straightforward but typical industrial circuit since these circuit setups are the exact same, but where you're able to observe how each sort of diagram shows the use of the circuit in their own manners.
Less mess, right? I've got enough info in each of these diagrams to know exactly what this circuit does and also where to start looking for issues. Hope this helps. ( Note: do not confuse lecture or circuit diagrams with wiring diagrams; wiring diagrams will typically demonstrate pictures of components like the pictorial, and the way the whole or portion of a circuit has been wired. The distinction is that wiring diagrams usually place an emphasis on real physical place of necessary elements relative to each other that basically tell a layman exactly what to do about the wiring. )