1. What is an LED Series Parallel Calculator?

Definition: This calculator determines either the total voltage (for series connections) or total current (for parallel connections) required for LED circuits.

Purpose: It helps electronics enthusiasts and professionals properly design LED arrays with correct power requirements.

2. How Does the Calculator Work?

The calculator uses one of two formulas based on configuration:

Where:

• \( V_{total} \) — Total voltage (volts)
• \( I_{total} \) — Total current (amperes)
• \( V_{LED} \) — Voltage per LED (volts)
• \( I_{LED} \) — Current per LED (amperes)
• \( n \) — Number of LEDs

Explanation: In series, voltages add up. In parallel, currents add up while voltage stays the same.

3. Importance of LED Circuit Calculation

Details: Proper calculation ensures LEDs receive correct power, prevents damage from overvoltage/overcurrent, and helps design efficient power supplies.

4. Using the Calculator

Tips: Select series or parallel configuration, enter the per-LED value (voltage for series, current for parallel), and number of LEDs. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between series and parallel?
A: In series, LEDs share the same current; in parallel, they share the same voltage.

Q2: What's a typical LED voltage?
A: Most standard LEDs operate at 1.8-3.3V, but check your specific LED datasheet.

Q3: What's a typical LED current?
A: Standard LEDs typically use 20mA (0.02A), but high-power LEDs may use more.

Q4: Can I mix series and parallel?
A: Yes (series-parallel arrays), but that requires more complex calculations than this tool provides.

Q5: Do I need current limiting resistors?
A: Yes, always use appropriate resistors to limit current to the LED's rated value.