There may also be a technical aspect of the dimmer that's adding to the flicker, depending on the type of dimmer(s) in use.
Some dimmers use a device called a "silicon-controlled rectifier" .. or "SCR". They allow only half of the sine wave to pass. Half-wave power wasn't very noticeable when used with incandescent lamps due to the continued "glow" persistence of the filament. However, LEDs react [essentially] immediately, and the flicker is very apparent. Final thought .. compressors use the most energy during the compression stroke. Actual current draw varies with each stroke of the piston. Check not only the battery connections, but look to see if the loads are on the same circuits as the lamps. If in fact the inverter AC output voltage IS dropping due to DC-side issues .. and the large AC loads happen to share the same circuit as the lamps .. this would make any flicker that much worse. Dan -------------------------------------------- On Mon, 1/6/14, b...@midnitesolar.com <b...@midnitesolar.com> wrote: Subject: Re: [RE-wrenches] Flickering LED lights on and Outback Dual 7248 VFX system To: "RE-wrenches" <re-wrenches@lists.re-wrenches.org> Date: Monday, January 6, 2014, 6:25 PM Only during Big load surges ? Could it be current limiting and because LEDs are so fast on and off, you notice the drop in momentary voltage ? Any inverter might do that under the right conditions. Just a thought. boB On 1/6/2014 3:45 PM, Dan Fink wrote: > I consider LED flicker as very common when a fridge starts up, but NOT while > it's running. Both dimmed and not dimmed LEDs. I see flicker more often on > systems with smaller (or aging) battery systems of course. The only > particular appliance I have found causing constant flicker here and with my > clients is a particular brand of laser printer. And also a subwoofer on the > stereo (light show!)....a different subwoofer brand solved that problem. Go > figure, I have no idea why. Most of my inverters are by Magnum. I have not > found much difference with LED brands or dimmer brands. > I can see how this could be a problem for your client, Kirpal. None of mine > seem to mind a startup flicker, but if its constant that's a big problem. I > wish I had an answer for you, but I hope that providing this information > helps others. CFLs do not give me the same problem, but of course have their > own other problems. > > Dan Fink, > Executive Director; > Otherpower > Buckville Energy Consulting > Buckville Publications LLC > NABCEP / IREC accredited Continuing Education Providers > 970.672.4342 > > > > > On Mon, Jan 6, 2014 at 2:48 PM, Jay Peltz <j...@asis.com> wrote: > > Dimmers are super specific to light brand/type. You'll have to do the > research > > For now swapping to regular switches should work > > Jay > _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
