EL Tape Series
EL Tape Energy
Consumption Data
Measured power draw figures, operating cost comparisons versus neon and LED alternatives, battery runtime calculations, and the effect of inverter frequency on brightness and consumption.
Baseline Power Figures
EL Tape is one of the most energy-efficient illuminated signage and accent lighting technologies available. Its low power consumption is the result of the electroluminescent mechanism itself: photons are produced by direct electron excitation of the phosphor layer rather than by heating a filament or running current through a high-resistance gas discharge tube.
Power Draw (typical)
0.4 to 0.6 W/sq ft
Operating Voltage
AC 80 to 120V (inverter output)
Inverter Input (typical)
3V to 12V DC
Inverter Efficiency
75 to 85%
Phosphor Lifespan
5,000 to 8,000 hrs
Operating Temperature
-20°C to +60°C
Total System Power
The figures above describe EL Tape power consumption at the panel. Total system power draw includes inverter losses. Divide the panel power draw by inverter efficiency (typically 0.80) to get total system input power from the DC source. A 6W panel with an 80% efficient inverter draws approximately 7.5W from the battery or power adapter.
Measured Draw by Format
| EL Tape Width | Power Draw per Meter | Power Draw per Foot | Notes |
|---|---|---|---|
| 12mm (0.5") | 0.12 W/m | 0.04 W/ft | Narrow accent strip |
| 25mm (1") | 0.25 W/m | 0.08 W/ft | Standard accent width |
| 50mm (2") | 0.50 W/m | 0.15 W/ft | Edge lighting, panel strips |
| 100mm (4") | 1.0 W/m | 0.30 W/ft | Wide panel strips, billboard tiling |
| 150mm (6") | 1.5 W/m | 0.46 W/ft | Large panel fills |
These figures are measured at standard inverter frequency (400Hz to 600Hz). Actual draw increases at higher inverter frequencies. See the frequency section below for measured variation data.
Effect of Inverter Frequency on Power and Brightness
Inverter drive frequency is the primary variable that allows EL Tape brightness to be adjusted beyond simple voltage variation. Higher frequency drives the phosphor through more excitation cycles per second, producing more photon output. However, the relationship is not linear and the power draw increase outpaces the brightness gain at the top end of the useful frequency range.
| Inverter Frequency | Relative Brightness | Relative Power Draw | Phosphor Aging Rate |
|---|---|---|---|
| 200 Hz | 60% | 70% | Slower — extends lifespan |
| 400 Hz | 80% | 85% | Normal rated lifespan |
| 800 Hz (standard) | 100% (baseline) | 100% | Normal rated lifespan |
| 1,600 Hz | 130% | 145% | Faster — reduces lifespan ~20% |
| 3,200 Hz | 155% | 210% | Significantly faster — not for continuous use |
⚠ Frequency and Lifespan
Running EL Tape at elevated inverter frequencies accelerates phosphor aging. The phosphor layer degrades as it loses excitation capacity over time. At standard frequency, the rated 5,000-hour lifespan is achievable. At 3,200Hz, effective lifespan may be reduced to under 3,000 hours. If maximum brightness is the objective and lifespan is secondary (event applications, temporary displays), high-frequency operation is acceptable. For permanent installations, operate at 800Hz or below.
EL Tape vs Other Technologies: Energy Comparison
The energy advantage of EL Tape is most apparent in direct comparison with the alternatives it commonly replaces in signage and display applications.
| Technology | Power Draw (comparable area) | EL Tape Index | Notes |
|---|---|---|---|
| EL Tape | 0.5 W/sq ft | 1.0x (baseline) | Total system including inverter |
| Cold cathode (CCFL) | 1.8 W/sq ft | 3.6x | Common in older backlit signage |
| Neon tube | 3.5 to 5.0 W/linear ft | 7 to 10x | Per linear foot, not area |
| Standard LED strip | 1.2 to 2.4 W/sq ft | 2.4 to 4.8x | Depends on density and diffuser depth |
| Pixel-Free LED (Ellumiglow) | 1.4 W/sq ft | 2.8x | Higher density for dot-free output |
| LED video wall (indoor) | 3 to 6 W/sq ft | 6 to 12x | P2.5 to P4 indoor at typical brightness |
Battery Runtime Calculations
EL Tape's low power consumption makes it well suited for battery-powered applications: wearables, event costumes, portable displays, and mobile signage. Calculate runtime using the following method.
Battery Runtime Formula
Runtime (hours) = Battery capacity (mAh) / Total system current draw (mA)
Total system current draw = Panel power (W) / Input voltage / Inverter efficiency
Example: 2 sq ft of EL Tape drawing 1W at the panel, 12V input, 80% inverter efficiency. System current = 1W / 12V / 0.80 = 104mA. A 2000mAh battery delivers: 2000 / 104 = 19.2 hours runtime.
| EL Tape Area | System Draw (12V, 80% eff.) | 2000mAh Battery Runtime | 5000mAh Battery Runtime |
|---|---|---|---|
| 1 sq ft (0.5W panel) | 52 mA | 38 hours | 96 hours |
| 2 sq ft (1W panel) | 104 mA | 19 hours | 48 hours |
| 4 sq ft (2W panel) | 208 mA | 9.6 hours | 24 hours |
| 8 sq ft (4W panel) | 416 mA | 4.8 hours | 12 hours |
| 12 sq ft (6W panel) | 625 mA | 3.2 hours | 8 hours |
Operating Cost Over Time
For permanent or semi-permanent EL Tape installations, operating cost is a relevant factor in the total cost of ownership calculation. At U.S. average electricity rates of approximately $0.16 per kWh, a 10 square foot EL Tape display drawing 5W total input power costs approximately $0.70 per month running 8 hours per day. A comparable neon sign drawing 40 to 50W costs $5.50 to $7.00 per month under the same operating schedule. Over a 12-month period, the energy cost difference is approximately $57 to $75 in favor of EL Tape for a 10 square foot display.
This advantage exists alongside the panel replacement cost at the 5,000-hour lifespan mark, which should be included in any full lifecycle cost analysis for permanent installations.
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