in electronic circuit design module, we look at a design perspective of circuits, which leads to appropriate assumptions for the practical use of the circuit and ways to approach solving a design problem.
considering the practical tolerance values of the components we use, we can safely ignore the currents through certain lines for the sake of our sanity n_n
let’s look at a simple example, a potential divider. here the circuit consists of two blocks, the potential divider and the load. we need to take into account how the interface of the load and the potential divider circuit affects the transfer function of the circuit.
