Calculators for Voltage Dividers
Voltage Dividers are a simple way of reducing a voltage to a desired value.
These calculators allow you to find suitable resistors for a given supply voltage and load resistor (or load current).
"Forward" calculation: find Vout
"Backward" calculation: find R2
The supply voltage needs to be > the output voltage.
"Backward" calculation: find R1
The supply voltage needs to be > the output voltage.
"Backward" calculation: find VCC
Illustration:
"Forward" calculation: find Vout
"Backward" calculation: find R2
"Backward" calculation: find R1
"Backward" calculation: find VCC
