Build Your Own EL Wire Power Supply - instructables I've read some of the instructables (and other tips) on quieting down noisy EL wire power supplies. Will building my own help in this regard? Meaning, would using a different circuit or with "better" components alleviate the high pitched whine of the cheaper supplies. Using EL Wire | EL Wire | Adafruit Learning System This pocket inverter can drive approximately 1 to 15 feet (0.3-5 meter) of 'classic' EL wire such as LyTec. Since we are using higher-brightness EL wire in the shop, it can only drive half as much, 1 to 7.5 feet (0.3 to 2.5 meter). We found that 2 meters gives a nice bright glow at good voltage and frequency.