Voltage Divider Calculator

Calculate Output Voltage





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Formula

The formula to calculate Output Voltage (Vout) from Input Voltage (Vin) and Resistances (R1 and R2) is:

\[ V_{out} = V_{in} \times \frac{R_2}{R_1 + R_2} \]

Where:

Voltage Divider Definition

A voltage divider is a simple circuit that turns a large voltage into a smaller one. It uses two resistors in series to divide the input voltage into a lower output voltage. The output voltage is determined by the ratio of the two resistors.

Example Calculation

Let's assume the following values:

Using the formula:

\[ V_{out} = 12 \times \frac{2000}{1000 + 2000} \]

\[ V_{out} = 12 \times \frac{2000}{3000} \]

\[ V_{out} = 12 \times 0.6667 \]

\[ V_{out} = 8 \text{ V} \]

The Output Voltage (Vout) is 8 V.

Voltage Divider Conversion Table

Input Voltage (Vin) Resistance (R1) Resistance (R2) Output Voltage (Vout)
5 1000 2000 3.333
10 1000 2000 6.667
15 1000 2000 10.000
20 1000 2000 13.333
25 1000 2000 16.667
30 1000 2000 20.000
35 1000 2000 23.333
40 1000 2000 26.667
45 1000 2000 30.000
50 1000 2000 33.333
55 1000 2000 36.667
60 1000 2000 40.000
65 1000 2000 43.333
70 1000 2000 46.667
75 1000 2000 50.000
80 1000 2000 53.333
85 1000 2000 56.667
90 1000 2000 60.000
95 1000 2000 63.333
100 1000 2000 66.667