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Linear Actuator Position

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1james.baldwin(at)gmail.c
Guest

Posted: Mon Feb 24, 2014 6:55 pm Post subject: Linear Actuator Position

Hey Electronic Guys -- 

Does anybody have a  schematic for a simple circuit to show the position of the wiper on a  10k potentiometer?  The leads are at each end of the resistor and one  additional one for the wiper.  I was thinking of a few LEDs that would  light up depending on position of the wiper.  Or maybe something that  would light up when the actuator was centered.  I also have a GRT EFIS if that could be used instead if anyone knows how.  Thank you for the help.       

  [quote][b]

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bakerocb

Joined: 15 Jan 2006
Posts: 727
Location: FAIRFAX VA

Posted: Tue Feb 25, 2014 5:22 am Post subject: Linear Actuator Position

2/25/2014

  

 Hello James Baldwin, Are you expecting this simple circuit to also include  how to create an indicator or display? There are already indicators in existence  that require only simple wire connections. 

  

 1) See here:

  

 http://www.firgelli.com/Uploads/Pos%20datasheet.pdf

  

 at this home page:

  

 http://www.firgelli.com/products.php

  

 2) See here:

  

 http://www.rayallencompany.com/products/indsens.html

  

 with this wiring instruction:

  

 http://www.rayallencompany.com/RACmedia/instructionsRP3.pdf

  

 at this home page:

  

 http://www.rayallencompany.com/products/servos.html

  

 I think that any ohm differences between your actuator and the indicators  can either be rather easily overcome with help from some electrical guru or just  ignored with the indicator still working effectively.

  

 OC

  

 PS: What linear actuator are you using and for what purpose? I have a few  spare actuators that may be of help.

  

 'O C' Baker  says "The best investment you can make is the effort to gather and understand  information."

  

 ========================================



Time: 06:55:51 PM PST US

Subject: AeroElectric-List:  Linear Actuator Position

From: James Baldwin <1james.baldwin(at)gmail.com>



Hey Electronic Guys --



Does anybody  have a schematic for a simple circuit to show the position of

the wiper on a  10k potentiometer?  The leads are at each end of the

resistor and one  additional one for the wiper.  I was thinking of a few

LEDs that would  light up depending on position of the wiper.  Or maybe

something that  would light up when the actuator was centered.  I also have

a GRT EFIS  if that could be used instead if anyone knows how.  Thank you

for the  help.



   [quote][b]

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kuffel(at)cyberport.net
Guest

Posted: Tue Feb 25, 2014 1:33 pm Post subject: Linear Actuator Position

James,

  

 <<  schematic for a simple circuit to show the position of the wiper on a 10k  potentiometer  >>

  

 At $20, the 10 segment Firgelli indicator  mentioned by Owen Baker is hard to beat.  It appears to be "smart" in the  sense it measures absolute voltage, not voltage relative to the buss  value.  This means the 10k potentiometer needs to be fed with a constant  voltage such as provided by an LM7805 IC regulator.

  

 If you insist on building a simpler display  the attached 5-level indicator uses less than $5 in  parts.

  

 Tom

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samdenson

Joined: 06 Jun 2015
Posts: 2

Posted: Sat Jun 13, 2015 12:19 pm Post subject: Re: Linear Actuator Position

here 2 good companies where you can try to search actuators you need 1) http://www.progressiveautomations.com/linear-actuators 2) http://importer.ec21.com/24v_linear_actuator.html. I perfer PA company because of quality, but some my friends like import. As for last one - Ive bought just 1 from them. Works good.

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