What does a Voltage Divider do in a Circuit?

 Note: Variations of potential divider are – rheostat, variable resistor, and/or potentiometer.

A Voltage-Divider enables you to obtain any voltage up to the maximum of the supply e. m. f solely by means of changes to resistors values.

  • A Voltage Divider finds application when you need a fraction of supply voltage to power a circuit; an example is in resistors array taping in multimeter
  • It finds useful applications in transistor circuits to stabilize the operating of a transistor or biasing to determine the operating point.
  • Potential Divider simply allow you to tap estimated voltage value from any or combination of resistors and ground potential
  • Variable Resistor, Preset/Rheostat, or Potentiometer enables you to derive smooth voltage increment or decrement between supply and ground.

Typical Areas of use of Voltage-Divider:

  • Photo Diode: in circuits for Street Lights control
  • Variable Resistor: Dimmer Switch; Volume Control; Shower Temperature

You will find out more about Voltage Divider usage in subsequent Posts,

  • How to make a Potential Divider
  • Practical Rule for a Potential Divider
  • Potential Divider Principle
  • Potential Divider Biasing a BJT
  • Potential Divider with Capacitors


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