learn.howToCalculate
learn.whatIsHeading
Calculates output voltage from a resistor network dividing input voltage. Used for ADC inputs, sensor interfaces, and voltage scaling.
Formula
Formula: Vout = Vin × (R2 ÷ (R1 + R2))
- R2
- R2 value — Variable used in the calculation
- R1
- R1 value — Variable used in the calculation
Guida passo passo
- 1Two resistors in series across supply voltage
- 2Output taken between resistors
- 3Formula: Vout = Vin × (R2 ÷ (R1 + R2))
- 4Select resistors to achieve desired output voltage
Esempi risolti
Ingresso
V1=12V, R1=1k, R2=1k
Risultato
Vout=6V
Errori comuni da evitare
- ✕Not buffering voltage divider with low-impedance load
- ✕Using very small resistor values (excessive power)
Domande frequenti
What affects voltage divider accuracy?
Load impedance (must be much higher than resistor values), temperature stability, resistor tolerance.
How do I buffer a voltage divider?
Use op-amp buffer to isolate divider from load; prevents voltage drop under load.
Pronto per calcolare? Prova la calcolatrice gratuita di Voltage Divider
Provalo tu stesso →