Impedance bridging

Impedance bridging is like a bridge between two pieces of land that take different kinds of electricity. Imagine there is one land with a type of electricity that is too weak to power something, and another land with a kind of electricity that is too strong. In order to get those two pieces of land to work together, you need to build a bridge, or in this case an impedance bridge, which helps connect the two types of electricity so that both can work together.