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Wig wag switching

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Larry Ford

Joined: 06 Mar 2010
Posts: 5
Location: United States

Posted: Tue Jun 29, 2021 9:13 am Post subject: Wig wag switching

I am replacing the 12v incandescent wing recognition lights (2) and nose landing light with a Flyleds array in the nose rated at 10 amps and the two wing lights at 2 amps. I would like to maintain the two panel mounted SPST switches from the previous installation but to operate the wigwag circuit and switch all three to constant "on", one of the switches has to be a DPDT. Theoretically, I could power a DPDT relay from the SPST switch but searching Mouser and Digikey I am finding a dearth of possible candidates. Another option would be to use two SPST relays of which there are plenty and operate them both simultaneously  via the panel switch. I would appreciate advice on the variables for the contact materials, coil resistance, etc. for this application.

Larry

Glasair I RG

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user9253

Joined: 28 Mar 2008
Posts: 1927
Location: Riley TWP Michigan

Posted: Tue Jun 29, 2021 5:07 pm Post subject: Re: Wig wag switching

If two SPST relays will work, then why not one DPST relay?

Mouser #:769-ACTL3CR3V

Silver Alloy contacts are good for power applications.

Gold contacts are for small signals, not power.

Coil resistance should be greater than 100 ohms.  Otherwise the relay will get too hot.

Here is a DPDT from Digikey.  Part number: A102CS12VDC

Looks like both relays above have pins that require soldering.

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_________________
Joe Gores

nuckolls.bob(at)aeroelect
Guest

Posted: Wed Jun 30, 2021 9:23 am Post subject: Wig wag switching

At 12:12 PM 6/29/2021, you wrote:

  	  Quote: 	
		  I am replacing the 12v incandescent wing recognition lights (2) and nose landing light with a Flyleds array in the nose rated at 10 amps and the two wing lights at 2 amps. I would like to maintain the two panel mounted SPST switches from the previous installation but to operate the wigwag circuit and switch all three to constant "on", one of the switches has to be a DPDT. Theoretically, I could power a DPDT relay from the SPST switch but searching Mouser and Digikey I am finding a dearth of possible candidates. Another option would be to use two SPST relays of which there are plenty and operate them both simultaneously  via the panel switch. I would appreciate advice on the variables for the contact materials, coil resistance, etc. for this application.

 Larry

 Glasair I RG

  	


  It would be helpful if you could post a schematic

  of your proposed wiring. Verbal descriptions of

  schematics are often mis-interpreted leading

  to the wrong advice.



 

 

   Bob . . .



   Un impeachable logic: George Carlin asked, "If black boxes

   survive crashes, why don't they make the whole airplane

   out of that stuff?"

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