# Electronics Handbook/Circuits/Voltage Divider

< Electronics Handbook | Circuits

Jump to navigation
Jump to search
The latest reviewed version was checked on

*30 May 2011*. There are template/file changes awaiting review.## Voltage Divider[edit]

If two circuit elements are in series, there is a voltage drop across each element, but the current through both must be the same. The voltage at any point in the chain divides according to the resistances. A simple circuit with two (or more) resistors in series with a source is called a voltage divider.

Figure A: Voltage Divider circuit.

## Transfer Function of Voltage Divider[edit]

Consider the circuit in Figure A. According to KVL the voltage is dropped across resistors and . If a current i flows through the two series resistors then by Ohm's Law.

- .

So

Therefore