Another question recently asked about the MC7805, and linked to
its the datasheet for the generic MC7800-series of regulators1.
When I read it, I noticed Figure 1, Representative Schematic Diagram, and there is a construction that I can't understand, which I have highlighted in the following image:
As you can see, there are a bunch of resistors, all of them bypassed! I know that the diagrams in these datasheet are only representative, so I suppose my question is:
What is this supposed to represent?
My guess is that it's related to one of the protection modes: current limit, thermal shutdown, and/or safe-area compensation, but I can't understand how - the resistors are apparently completely and permanently bypassed.
1) I originally assumed it was specific for the 7805 variant. Brian Drummond pointed out in a comment to an answer that it is generic, which makes the purpose of the resistors easier to explain.