Pictorial design diagrams, or graphic circuit diagrams are essentially the identical thing with the identical purpose, however they use images of elements inside the circuit rather than symbols. Again, here's the identical specific circuit (almost except a control transformer was inserted and they're using conductors L1 and L3 instead of L1 and L2.
Right, much less clutter? I have enough information in every one of these diagrams to know precisely what this circuit will do and also where to look for issues. Hope that this helps. ( Note: do not confuse circuit or schematic diagrams with wiring diagrams; wiring diagrams will typically show pictures of elements like the pictorial, and also the way the entire or portion of a circuit is wired. The difference is that wiring diagrams usually place an emphasis on actual physical place 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 specific type of circuit structure which uses standard electrical/electronic symbols rather than images to demonstrate how a circuit (or a portion of it) works. Below is a typical 3-wire motor control circuit using a standard momentary halt - start pushbutton channel employing a schematic diagram. (Momentary this means the button/switch you trigger will return to its default position once you physically let go of this, typically by a spring that forces the button/switch to do this.)
Here is another schematic diagram demonstrating precisely exactly the same circuit, connections and components and it looks different but they fall into the identical category.
Here's a specialized version of a diagram. The main goal of this diagram is to show the logic (speaking to electrical control) of a circuit board. This diagram is the one that I mostly come across in my own line of work, and it is extremely successful for troubleshooting issues or learning how a circuit works. Some frequencies are so enormous that many kinds of schematic diagrams have to be recorded in increments from book form (normally with coded numbers so that info can be easier located ). Again, here's the exact same precise circuit as the first 2, however, looking at it in ladder form.
Consider it in this way; a circuit diagram is any kind of diagram which illustrates how a circuit operates where the main objective is that the appropriate wiring of elements and their relationship to each other rather than physical place relative to each other or planning prototypes. Nevertheless, in some uses classifying diagrams can be hard so consider this as general information. I've found this is particularly true when working with more complex circuits and electronics. I'm likely to use a simpler but average industrial circuit since these circuit setups are exactly the same, but yet where it is possible to observe how each kind of diagram shows the purpose of the circuit in their own manners.