Potential Divider Circuit

 Potential divider circuit or a voltage divider circuit is used to divide voltages among resistors used in series in order to gain uses of these voltage drops, this is a very useful and common circuit in electronics.

The method is very simple, you can vary the resistance connected so that your required voltage is gained at the required point.

The phenomena and the Theoretical Background.

Vout is the point where we need the voltage that we require.R1 and R2 are series resistors, Vin is the input voltage and Vo is the Earth or 0V(can be any voltage below Vin).

Applying Kirchhoff law for the total system,

 Therefore, by changing the resistance ratio we can get the desired voltage at Vout since Vin is a constant.

Applications of Voltage Dividers.

• ·       Sensor Measurement.
• ·       High Voltage Measurement
• ·       Logic Level Shifting
• ·       Signal level adjusting
• ·       Wheatstone bridge and multi meters include voltage dividers.