Power Injection Formula:
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Definition: This calculator determines the power required for LED pixel injection points based on current and voltage.
Purpose: It helps lighting designers and installers properly size power supplies and injection points for LED pixel installations.
The calculator uses the formula:
Where:
Explanation: The current draw is multiplied by the operating voltage to determine the power requirement.
Details: Proper power injection ensures consistent brightness, prevents voltage drop, and maintains reliable operation of LED pixels.
Tips: Enter the current draw in amperes and operating voltage (default 12V). All values must be > 0.
Q1: How do I determine the current draw?
A: Check your LED pixel specifications - typically given in mA per pixel at full brightness.
Q2: What voltage should I use?
A: Common voltages are 5V, 12V, or 24V depending on your pixel type. Default is 12V.
Q3: Should I add a safety margin?
A: Yes, we recommend adding 20-30% to the calculated power for headroom and safety.
Q4: How often do I need power injection?
A: This depends on current draw, wire gauge, and distance - typically every 50-100 pixels.
Q5: Can I use this for both 5V and 12V systems?
A: Yes, simply enter the correct voltage for your system (5, 12, or 24 volts).