ulflyer(at)verizon.net
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 Posted: Fri Sep 09, 2011 9:41 pm Post subject: AeroLed landing lights not working with wig wag relay |
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Check out the Show Me units - Their a Wig-Wag flasher unit like used on emergency vehicles like police cars. I have one of these on my plane which drives a pair of driving lights for the purpose of recognition lights and it works good. The unit I have allows you to select flash both, alternate flash, or both lights on. Also check the wattage of your landing lights and what a unit can handle. They can be purchased with wire pig tails or screw terminals, I got the one with screw terminals. Also there is flash rate, I got the slowest I could get which comes out to be a second on, a second off. I think mine cost me around $45 dollars a few years back - I use it for switching recognition (driving) lights on my ultralight.
http://shop.store.yahoo.com/bcssales/shomranheadf.html
Do a search on Google.com for Able 2 & Show ME wig wag flashers. There is a lot of price variation between places that sell them, I got mine from the manufacturer - they had the best price.
The problem you may be experiencing with the LED lights is the low current load if the unit using a thermo-switch much like a turn-signal flash unit. I don't think you would have a problem with the unit above.
I now had the units and the driving lights running for over 10 years. My how time flys . . . .
jerb
At 08:13 AM 9/9/2011, you wrote:
[quote]--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckolls.bob(at)aeroelectric.com>
At 07:56 AM 9/9/2011, you wrote:
| Quote: | --> AeroElectric-List message posted by: "Helidesigner" <mwscott2(at)comcast.net>
I purchased the B&C wig wag relay and wired it according to the schematic for an off-on-on switch and B&C diode assembly. The wig-wag is in the middle position. I included the resistors between the relay and ground shown in the updated schematic. The system works fine with incandecent nav lights but not with the LED landing lights. Only one LED light turns on in wig wag mode and both lights turn on in continuous on mode. The nav lights draw about 3.2 amps, the LED lights about 3.7 amp. Anyone know what is going on here and how to fix it. Should I just purchase an electronic wig wag unit designed for LED's? |
I modified that drawing for B&C based on testing I
did using one of the flashers from their inventory.
The resistors were added to emulate the fixed load
offered by incandescent lamps. You are the second
individual who was unable to duplicate the behavior
I was getting on the bench. I have a pair of Whelen
LED landing lights loaned to me by another reader
and I plotted their current draw vs. voltage curve
which I posted on the List a few days ago.
I'm somewhat tied up with some family matters and
can't get back to the bench right now to figure out
what's going on . . . but the solution will not
be difficult. Sit tight for the moment . . . watch
this space.
Bob . . . [b]
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