LED in Series Calculator

LED Series Formula:

\[ V_{total} = V_{LED} \times n \]

Total Voltage (volts):

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1. What is an LED in Series Calculator?

Definition: This calculator determines the total voltage required for multiple LEDs connected in series while keeping current constant.

Purpose: It helps electronics hobbyists and engineers design proper LED circuits with correct power supply requirements.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ V_{total} = V_{LED} \times n \]

Where:

\( V_{total} \) — Total voltage required (volts)
\( V_{LED} \) — Voltage drop per LED (volts)
\( n \) — Number of LEDs in series
\( I \) — Current through circuit (amperes, remains constant)

Explanation: In series circuits, voltages add while current remains the same through all components.

3. Importance of LED Series Calculation

Details: Proper voltage calculation ensures LEDs operate at correct brightness without being damaged by overvoltage.

4. Using the Calculator

Tips: Enter the voltage drop per LED (typically 1.8-3.3V depending on color), number of LEDs, and desired current (typically 0.02A for standard LEDs).

5. Frequently Asked Questions (FAQ)

Q1: Why does current remain constant in series?
A: Series circuits have single current path, so same current flows through all components.

Q2: What's typical LED voltage drop?
A: Red: 1.8-2.2V, Blue/White: 3.0-3.4V, Green/Yellow: 2.0-2.4V (check datasheet).

Q3: How do I limit current in practice?
A: Use a current-limiting resistor calculated by (Vsupply - Vtotal)/I.

Q4: Can I mix different color LEDs?
A: Not recommended in series as different voltages may cause uneven brightness or damage.

Q5: What if my power supply voltage is higher?
A: You must use a current-limiting resistor or constant-current driver to prevent LED damage.