Reverse polarity switch for actuator

aceb

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I've just fitted inclination adjustment to my Gibby and intend to control it using an old 12V linear supply because it's currently redundant and I don't want to spend yet more money on a third positioner (although I am watching Ebay for anything used that is suitable). So to make things a bit more convenient I'm going to wire it via a switch but just want to run the idea passed the collective here to make sure nothing un-toward will happen when I connect it up.

Basically a DPDT momentary on OFF on switch with two pairs of cables going to the actuator. I've limited the actuator to 50mm travel in each direction to prevent any disasters.
 

satelliteman

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Looks a nice idea.
 

Llew

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Why use two pairs to the actuator? just wire your DPDT switch for polarity reversal.
 

Channel Hopper

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As above, make sure your 12v supply drives at least 6A for start up and 2A continuous, and you may as well add some capacitors between the terminals to reduce the arcing.

Oh, and don't forget to set the mechanical limits carefully, you only need an inch or so (ooooer!)
 

aceb

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1.8m Precision PF + ESX241/Inverto Black Pro, 66E-63W Ku/C-band /
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Thanks for the replies, the PSU is a 20amp job but thanks for the tip on the caps. Switch is ordered and cable run in so hopefully tomorrow I'll get to test it properly.
 
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