TI Voltage Divider Calculator

Voltage Divider Formula:

\[ V_{out} = V_{in} \times \frac{R2}{R1 + R2} \]

Output Voltage (V_out): volts

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1. What is a Voltage Divider Calculator?

Definition: This calculator determines the output voltage of a voltage divider circuit based on input voltage and resistor values.

Purpose: It helps electronics engineers and hobbyists design and analyze voltage divider circuits commonly used in analog electronics.

2. How Does the Calculator Work?

The calculator uses the voltage divider formula:

\[ V_{out} = V_{in} \times \frac{R2}{R1 + R2} \]

Where:

\( V_{out} \) — Output voltage (volts)
\( V_{in} \) — Input voltage (volts)
\( R1 \) — First resistor (ohms)
\( R2 \) — Second resistor (ohms)

Explanation: The output voltage is proportional to the ratio of R2 to the total resistance (R1 + R2).

3. Importance of Voltage Divider Calculation

Details: Proper voltage division is crucial for creating reference voltages, biasing transistors, and interfacing different voltage level circuits.

4. Using the Calculator

Tips: Enter the input voltage and both resistor values. All values must be positive numbers. The output will be automatically calculated.

5. Frequently Asked Questions (FAQ)

Q1: What's the maximum current through the divider?
A: I = V_in / (R1 + R2). Choose resistors that can handle this current.

Q2: How does load affect the output?
A: Any load in parallel with R2 will lower the effective resistance, changing the output voltage.

Q3: What are typical applications?
A: Sensor interfacing, reference voltages, level shifting, and potentiometer circuits.

Q4: How to choose resistor values?
A: Higher values reduce power consumption but increase noise sensitivity. Typical range: 1kΩ to 100kΩ.

Q5: Can I use this for AC signals?
A: Yes, with the same formula, but consider frequency-dependent impedance for capacitors/inductors.