Voltage Divider with Resistors: Calculation and Application

1. What is a Voltage Divider?

A voltage divider is a simple circuit used to reduce voltage to a lower value in a predictable ratio. It consists of two or more resistors connected in series, with the output voltage taken from the middle connection.

Key Uses:
✔ Adjust voltage levels for sensors and circuits
✔ Provide reference voltages in electronic devices
✔ Limit input voltage to components

⚠ Not Suitable for Power Supply Conversion!
Voltage dividers should not be used to power devices because they are inefficient and cannot handle high currents.

2. Basic Voltage Divider Circuit

A voltage divider consists of two resistors (R1 and R2) in series with an input voltage U_in, producing an output voltage U_out (see diagram below).

Circuit Diagram:

   U_in → ─── R1 ───●──── U_out

				

				
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