1. What is an LED Power Injection Calculator?

Definition: This calculator determines the power required for LED strip injection points based on current and voltage.

Purpose: It helps electrical engineers, lighting designers, and DIY enthusiasts properly size power supplies for LED installations.

2. How Does the Calculator Work?

The calculator uses the basic power formula:

Where:

• \( P \) — Power (watts)
• \( I \) — Current (amperes)
• \( V \) — Voltage (volts)

Explanation: The current draw of the LED strip is multiplied by the operating voltage to determine the power needed at injection points.

3. Importance of Power Injection Calculation

Details: Proper power injection prevents voltage drop, ensures consistent brightness, and maintains LED longevity.

4. Using the Calculator

Tips: Enter the current draw in amperes and the operating voltage (default 12V). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How do I find the current draw of my LED strip?
A: Check the specifications (usually in mA/m or A/m) and multiply by the length you're using.

Q2: Why is 12V the default voltage?
A: 12V is the most common operating voltage for LED strips, though some use 5V or 24V systems.

Q3: Should I add a safety margin to the calculated power?
A: Yes, it's recommended to add 20-30% to account for power supply efficiency and safety margins.

Q4: How often do I need power injection points?
A: This depends on the strip's current draw and conductor size, typically every 5-10 meters for 12V strips.

Q5: Can I use this for parallel-connected LED strips?
A: Yes, but you must calculate the total current draw of all parallel-connected strips.