Think of it this way; a circuit diagram is any type of diagram which demonstrates how a circuit functions where the major goal is that the proper wiring of elements and their connection to each other instead of physical place relative to one another or planning prototypes. Nevertheless, in some applications Assessing diagrams can be hard so choose this as overall information. I've discovered this is especially true when working with much more complex circuits and electronic equipment. I'm going to use a simpler but average industrial circuit because these circuit setups are exactly the same, but where it is possible to observe how each type of diagram indicates the operation of the circuit in their own ways.
Following is a specialized version of a diagram known as a ladder structure. The principle aim of this diagram is to show the logic (referring to electrical control) of a circuit board. This diagram is the one that I mainly encounter in my own line of work, and it is very effective for troubleshooting issues or learning how a circuit functions. Some frequencies are so huge that many kinds of schematic diagrams have to be recorded in increments in book form (usually with coded numbers so information can be easier located ). Again, here is the exact identical specific circuit since the first two weeks, however looking at it in ladder form.
Pictorial schematic diagrams, or graphic circuit diagrams are basically the identical thing with exactly the same function, but they use pictures of components inside the circuit rather than symbols. Again, here is the exact exact circuit (virtually except a controller was added and they're using conductors L1 and L3 instead of L1 and L2.
Much less clutter, right? I've got enough information in each one of these diagrams to know just what this circuit will do and also where to start looking for problems. Hope this helps. ( Note: don't confuse circuit or schematic diagrams together with wiring diagrams; wiring diagrams will often show pictures of components such as the pictorial, and the way the whole or part of a circuit will be wired. The distinction is that wiring diagrams typically place an emphasis on actual physical location of necessary components relative to each other that essentially tell a layman exactly what to do about the wiring)
A design diagram refers to a particular kind of circuit structure which utilizes standard electrical/electronic symbols rather than pictures to demonstrate the way the circuit (or a part of it) functions. Below is a typical 3-wire motor control circuit utilizing a standard short stop halt - start pushbutton station using a schematic diagram. (Momentary here means the button/switch you trigger will return to its default location once you physically let go of it, usually by a spring that compels the button/switch to get this done.)
Here's another schematic diagram showing exactly the identical circuit, components and connections and it appears different but they both fall into the exact identical category.