Consider it this way; a circuit diagram is any type of diagram which demonstrates the way the circuit functions where the primary objective is the proper wiring of components and their connection to each other rather than physical location relative to each other or intending prototypes. Nonetheless, in some uses classifying diagrams can be difficult so do this as general advice. I've found this is particularly true when working with much more complicated circuits and electronics. I'm likely to work with a more straightforward but average industrial circuit since these circuit setups are exactly the same, but where it is possible to observe how each kind of diagram indicates the operation of the circuit in their own ways.
Here is another schematic diagram demonstrating exactly the identical circuit, components and connections and it seems different but they both fall into exactly the exact identical category.
Pictorial schematic diagrams, or graphic circuit diagrams are essentially the exact same thing with the identical purpose, however they use pictures of components inside the circuit instead of symbols. Again, here is the exact precise circuit (almost except a control transformer was added and they are utilizing conductors L1 and L3 instead of L1 and L2.
Less clutter, right? I've got enough information in every one of these diagrams to know precisely what this circuit will do and where to start looking for problems. Hope that this helps. ( Note: do not confuse circuit or schematic diagrams together with wiring diagrams; wiring diagrams will often show images of elements like the pictorial, and also how the whole or part of a circuit will be wired. The difference is that wiring diagrams usually place an emphasis on actual physical location of necessary elements relative to each individual that basically tell a layman Just What to do about the wiring. )
A design diagram refers to a particular type of circuit diagram which utilizes standard electrical/electronic symbols instead of images to show how a circuit (or portion of it) works. Below is a standard 3-wire motor controller circuit using a standard momentary halt - start pushbutton channel working with a schematic diagram. (Momentary this means that the button/switch you activate will return to its default place once you let go of it, typically by a spring that compels the button/switch to get this done.)
Following is a version of a design diagram called a ladder diagram. The major intent of this diagram is to show the logic (referring to electric management ) of a circuit. This really is the one that I mostly come across in my line of work, and it's extremely successful for troubleshooting problems or learning the way the circuit works. Some frequencies are so huge that many types of schematic diagrams have to be recorded in increments in book form (typically with coded numbers so information can be simpler found). Again, here's the identical exact circuit as the first two weeks, however considering it in ladder form.