In modern electronic technology, a voltage divider is a common circuit element used to divide voltage and current into different proportions. Voltage dividers play an important role in a variety of applications, from power management to sensor interfaces, to optimize circuit performance and meet specific design needs.

A current divider is an electrical circuit configuration that divides the current flowing through a circuit into multiple paths or branches. It is used to distribute the current among different elements or components in a circuit.

In the past, in order to expand the measurement range of current, the resistor used as a Shunt and the galvanometer in parallel is called a shunt (Shunt), and in recent years, the current detection purpose of the detection of circuit current has begun to be collectively referred to as a shunt resistor.