1

I am running some 10 watt LED floodlights off a 12 volt battery and 230 volt inverter. The 10 watt LED floodlights are flashing on and off. I am also running 20 watt floodlights and they do not flash. Both work perfectly on the mains power.

How can I eliminate the flashing with the 10W lights?

  • What are the specs of the inverter? Does it output a stable 50/60hz true sine wave? Most likely it doesn't put out a true sine wave and some electronics can't handle that. – Grant Dec 1 '13 at 21:07
  • You are converting from low-voltage DC to high-voltage AC and then back to low-voltage DC. It might be worth considering converting your LED floodlights to work directly from an external low-voltage DC supply without two intermediate conversions. – RedGrittyBrick Dec 2 '13 at 16:06
2

Buy a better inverter. The DC/AC circuits in your 10W lights evidently like a pure sine wave (as provided by grid/mains power) on the AC input side, and your inverter is almost certainly not a pure sine wave inverter (just based on your symptoms, but feel free to confirm/deny).

  • +1 and also: I would guess that they might be dimmable LED floodlights, and their circuitry that looks for the duty cycling from the dimmer is being confused by the waveform from the inverter. – Kaz Dec 2 '13 at 16:50

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.