Cara Menghitung Voltage Divider
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Calculates output voltage from a resistor network dividing input voltage. Used for ADC inputs, sensor interfaces, and voltage scaling.
Rumus
Formula: Vout = Vin × (R2 ÷ (R1 + R2))
- R2
- R2 value — Variable used in the calculation
- R1
- R1 value — Variable used in the calculation
Panduan Langkah demi Langkah
- 1Two resistors in series across supply voltage
- 2Output taken between resistors
- 3Formula: Vout = Vin × (R2 ÷ (R1 + R2))
- 4Select resistors to achieve desired output voltage
Contoh Terpecahkan
Masukan
V1=12V, R1=1k, R2=1k
Hasil
Vout=6V
Kesalahan Umum yang Harus Dihindari
- ✕Not buffering voltage divider with low-impedance load
- ✕Using very small resistor values (excessive power)
Pertanyaan yang sering diajukan
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.
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