EL Tape Series
EL Tape
Inverter Guide
How to size, select, and wire an inverter for EL Tape. Covers single-zone and multi-zone setups, battery vs mains power, frequency selection, dimming, and sequencing.
What an EL Inverter Does
EL Tape and EL panels require alternating current (AC) to operate, but most portable power sources (batteries, USB power banks) and many fixed installations use direct current (DC). An EL inverter converts the DC input to high-frequency AC output at the voltage required by the EL material — typically 80 to 130V AC at frequencies between 200Hz and 3,200Hz.
Without an inverter, EL Tape will not light up. Connecting EL Tape to a DC source directly produces no output and can damage the panel if left connected. Every EL Tape installation requires a matched inverter.
⚠ Never Power EL Tape from DC Directly
EL Tape connected to a DC source without an inverter will not light. Sustained DC connection can cause electrolytic corrosion at the electrode contacts and permanent damage to the panel. Always use a matched EL inverter. Do not substitute a LED driver or any other DC-to-DC converter.
Inverter Sizing
Inverters are rated by the area of EL panel they can drive, typically expressed in square feet or square centimeters. To size your inverter, calculate the total area of EL Tape in your installation and select an inverter rated for at least 150% of that area.
Why 150% Headroom
An inverter operating at or near its rated capacity runs hot, produces audible noise, and has a significantly shorter lifespan than one operating at moderate load. The 150% headroom rule ensures the inverter operates comfortably, runs quietly, and reaches its rated lifespan. For battery-powered applications, it also means the inverter does not draw down the battery faster than necessary.
| EL Tape Area | Minimum Inverter Rating | Recommended Inverter Rating |
|---|---|---|
| Under 1 sq ft | 500mA rated | Standard 1A |
| 1 to 3 sq ft | Standard 1A | 1.5A or larger |
| 3 to 6 sq ft | Standard 2A | 3A |
| 6 to 12 sq ft | Commercial 5A | Zone into 2 x 3A inverters |
| Over 12 sq ft | Multiple inverters | One inverter per 4 to 6 sq ft zone |
Input Voltage Options
EL inverters are available for three input voltage categories. Choose based on your power source.
3V to 4.5V (Battery)
Small battery-powered inverters in this range run from 2 to 3 AA or AAA batteries. They are the default for wearable, costume, and portable applications. Output capacity is typically 0.5 to 2 square feet of EL Tape. Battery runtime depends on capacity and load.
9V to 12V (DC Adapter or Battery Pack)
Mid-range inverters at 9V to 12V input cover the majority of fixed and semi-fixed display applications. They are compatible with standard 12V wall adapters and 12V battery packs (three 18650 lithium cells or a sealed lead-acid). Output capacity ranges from 2 to 12 or more square feet depending on the specific inverter model. These are the most versatile and commonly specified inverters for retail display and architectural applications.
110V to 240V AC Mains
Mains-powered EL inverters are available for large fixed installations where portability is not required and maximum output is the objective. They draw from wall outlets and can drive very large panel areas from a single unit. For permanent billboard and large retail display applications, mains-powered inverters simplify the power system and eliminate battery management.
Frequency Selection
Many EL inverters operate at a fixed frequency. Some offer selectable frequency settings or a continuous frequency adjustment (sometimes labeled as a brightness control, which is effectively the same thing). The frequency determines both the brightness output and the audible noise level of the inverter.
- Fixed-frequency inverters (400Hz to 800Hz). The standard for most display and architectural applications. Output is stable, audible noise is low, and the drive frequency is within the optimal range for EL phosphor lifespan. The Ellumiglow standard inverters operate in this range.
- High-frequency inverters (800Hz to 2,000Hz). For applications requiring maximum brightness where the higher frequency noise and slightly reduced lifespan are acceptable. Event and entertainment applications commonly use these.
- Variable-frequency inverters. Allow brightness control by adjusting the drive frequency. Useful for display applications where you want the ability to dim the panel or calibrate brightness to match other light sources in the environment.
Multi-Zone and Sequencing Setups
For displays larger than a single inverter can drive, or for displays where different zones need independent control, multi-zone inverter setups are used. Each zone has its own inverter; a controller sends the on/off or brightness signal to each inverter on its own channel.
Sequencing Inverters
Sequencing inverters have a built-in microcontroller that cycles through multiple output channels in a programmable pattern. A typical sequencing inverter has 4 to 8 channels, each of which can connect to a separate zone of EL Tape. The programmed sequence creates a chasing, alternating, or custom pattern of illuminated zones without any external controller. For retail window displays, outdoor signage, and event installations where motion adds visual energy, a sequencing inverter is a high-value addition to the system.
DMX Control
For commercial and architectural installations that are integrated into a lighting control system, DMX-compatible EL inverters allow each zone to be addressed and controlled from a central DMX lighting board or software controller. This is the highest-capability option and is specified when the EL Tape display needs to respond in real time to music, environmental data, or a programmed lighting show.
Wiring EL Tape to the Inverter
EL Tape connects to the inverter via a lead wire with a connector appropriate to the tape type. Parallel EL Tape uses a simple two-conductor connection. Split EL Tape requires the correct EZ Snap or Molex connector that engages the split electrode pattern.
01
Identify the tape type and connector
Confirm whether your tape is parallel or split construction and locate the correct connector for your tape width. Using a parallel connector on split tape will only engage one electrode and produce no output or very dim output from partial contact.
02
Attach the connector to the tape end
Seat the connector on the cut end of the tape with the electrode contacts aligned to the tape's conductor pads. Apply firm pressure to snap the connector closed. Test continuity with a multimeter if available before proceeding.
03
Connect the lead to the inverter output
Plug the lead wire into the inverter's EL output port. Polarity is not critical for EL Tape (AC output has no polarity), but the connector must seat fully. A partial connection produces intermittent output or complete failure.
04
Apply power and verify operation
Connect the inverter's DC input to your power source and power on. The tape should illuminate uniformly within 0.5 seconds. If the tape does not light or shows only partial illumination, check the connector seating, verify the tape type matches the connector, and confirm the inverter is within its rated area capacity.
Common Inverter Problems
| Symptom | Likely Cause | Fix |
|---|---|---|
| Tape does not light at all | No connection, dead inverter, or DC connected directly | Check all connections; confirm inverter gets DC input; confirm using AC inverter |
| Tape is very dim | Inverter undersized, low battery, or wrong tape type connected | Upgrade inverter; charge or replace battery; check connector match |
| Tape lights at one end only | Parallel tape issue — brightness gradient; or short at far end | Check far end for shorts; consider split tape for long runs |
| Audible buzzing from inverter | Inverter at or near capacity, or high drive frequency | Reduce load per inverter; lower frequency setting if adjustable |
| Tape flickers | Loose connection or very low battery | Re-seat all connectors; replace or charge battery |
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