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Two Speed Controller and Relay Deck for Ray-Allen actuators

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nuckolls.bob(at)aeroelect
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Posted: Mon Jan 23, 2012 4:01 pm Post subject: Two Speed Controller and Relay Deck for Ray-Allen actuators

At 01:08 PM 1/22/2012, you wrote:



  	  Quote: 	
		  The same ebay company had this:

  http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=250975404341#ht_4310wt_1398 



 Looks like it would be an economical alternative to the high dollar relay decks used with stick grip switches, etc. The relay coils are 5V, but a handful of dropping resistors or a 5V supply feeding the control switches would solve that. 	


   If your talking about Ray-Allen actuators, this would be

   horrible overkill. These actuators need about 100 mA for

   operation. The relays needed are simple one-pole, double-

   throw devices available in 12 or 24 volts for under $4.

   The bill of materials to build an adjustable, two-speed

   controller is under $10. See:



  http://www.aeroelectric.com/PPS/Flight/Trim/Two_Speed_Trim_2.pdf

 

   Except for the selection of relay (12/24) the bill of

   materials is the same for installing a 2-speed Ray-Allen

   trim actuator in either a 14 or 28v airplane.



   With a tad more head scratching, the relays can be replaced

   with transistors and a circuit could be evolved that would

   work in either 14/28 volt airplanes.



   One COULD use a big honk'n down converter and use it to

   run all trim systems and power cockpit accessories.



 

   Bob . . .    [quote][b]

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