A voltage divider is a simple circuit of two resistors in series that splits an input voltage into a smaller output voltage — a building block used constantly in electronics to scale signals down to a usable level..
A voltage divider is a simple circuit of two resistors in series that splits an input voltage into a smaller output voltage — a building block used constantly in electronics to scale signals down to a usable level.
A 9 V input passes through R1 = 1000 Ω and R2 = 2000 Ω. Vout = 9 × (2000 / 3000) = 6 V.
Two resistors in series divide input voltage proportionally based on their resistance ratio.
Vout = Vin × (R2 ÷ (R1 + R2)).
Scaling down a sensor signal to a safe level for a microcontroller input.