Pictorial schematic diagrams, or pictorial circuit diagrams are essentially the same thing with the exact identical function, but they use images of elements inside the circuit rather than symbols. Again, here's the exact exact circuit (virtually except a control transformer was inserted and they're utilizing conductors L1 and L3 rather than L1 and L2.
Think of it in this way; a circuit structure is any sort of diagram that illustrates how a circuit operates where the main goal is the appropriate wiring of components and their relationship to each other rather than physical place relative to each other or intending prototypes. Nonetheless, in some applications classifying diagrams can be challenging so consider this as general advice. I have discovered this is especially true when working with more complex circuits and electronic equipment. I'm likely to work with a more straightforward but average industrial circuit because these circuit set ups are exactly the same, but yet where it is possible to observe how each type of diagram indicates the role of the circuit in their own ways.
Here is another schematic diagram showing the same circuit, connections and components and it seems different but they both fall into the exact same category.
Here's a variant of a schematic diagram. The most important intent of this diagram will be to demonstrate the logic (referring to electrical management ) of a circuit board. This diagram is the one I mostly come across in my line of work, and it's very successful for troubleshooting issues or learning the way the circuit works. Some circuits are so huge that many kinds of schematic diagrams have to be read in increments from novel form (typically with coded numbers so that information can be simpler found). Again, here's the exact precise circuit since the first two, but looking at it in ladder form.
Much less clutter, right? I have enough info in each one these diagrams to know exactly what this circuit does and also where to start looking for issues. Hope that this helps. ( Note: do not confuse circuit or schematic diagrams with wiring diagrams; wiring diagrams will usually demonstrate images of elements like the pictorial, and also how the whole or part of a circuit is wired. The distinction is that wiring diagrams typically place an emphasis on real physical place of necessary elements relative to each other that basically tell a layman Just What to do concerning the wiring)
A schematic diagram refers to a specific kind of circuit diagram that utilizes standard electrical/electronic symbols rather than images to show how a circuit (or portion of it) works. Below is a standard 3-wire motor controller circuit employing a normal short stop halt - start pushbutton station working with a schematic diagram. (Momentary here means that the button/switch you activate will go back to its default location once you let go of this, usually by a spring which compels the button/switch to do this.)