Okay, so my brother and I are diving deep into Thaumcraft for 1.7.10 for the first time. And honestly, I have no idea what's going on with nodes anymore. Node stabilisers, node energisers, centi-vis, vis relays - I'm thoroughly confused. Can someone break down what I need to do in terms of node manipulation, please? How many nodes do we need for a good setup? What do we need to do to them? How big do we want to make them?
Phew, this is a big question. Obviously there are wikis and so on, but I'll see if I can condense it down a bit:
In Thaumcraft 4 for 1.7.10, nodes are as they were previously; they generate in the world, with certain aspects (mostly primal - aer, terra, aqua, ignis, perdito and ordo), and you can drain primal aspects with your wand to refill it. And they will slowly recharge the aspects drained over time (unless you drain an aspect completely). Brilliant.
Nodes can do what is referred to as "bullying", whereby they drain aspects from nearby nodes, with a chance to increase themselves in the aspect drained - bigger nodes bully smaller ones. Because you can move nodes about, this allows you to use small nodes to build up a bigger node. Ideal.
Node stabilisers come in two types, the basic ones stop a node from bullying and from being bullied, so you can have a bunch close together (say, for charging wands for example) without them eating each other. The advanced node stabiliser allows a node to bully without being bullied itself. Handy. But, both types cause the rate at which the aspects recharge to be decreased - either in half (basic) or almost completely (advanced). Less handy.
This is all fairly standard. But, a new type of node behaviour was introduced: Energised nodes. Instead of having a pool of an aspect that is drained and refilled, these instead generate a small amount of one or more of the primal aspects
constantly, in the form of "centi-Vis". This stream of energy can be sent (via vis relays) to certain machines and items to either make them work or make them function more effectively. It can also be used to charge wands and other vis-holding items. The Node Transducer is what turns a node from a normal one to an energised one; the final amount of centi-vis it generates is dependent on how much of the aspects it had before it was energised. Tidy.
Hope this is useful!
EDIT: Edited to give the item that energises nodes the correct name:
Node Transducer.