Relationships in A Doll's House as represented in an electrical circuit.

Overall, this central circuit represents the character of Torvold: his driving force (4) and means by which he controls those close to him

The right side of the circuit represents his relationships with Krogstad and Mrs. Linde, and more importantly, the way in which they complement each other.

The left side of the circuit represents his relationship with Nora, including both her original and transformed driving force (8), as well as the means for her transformation