Reverse current protection

Submitted by Iurie on Wed, 12/29/2021 - 19:01

Hello everyone :) 

 

Any chances somebody can spare few minutes and look at a simple diagram i'm struggling with ?   

Basically I would like to use two diffrent timer switches to power a 12v liniar actuator which will rotate a solar panel back and forth .  

One switch will have the output polarity swapped  so the actuator will move in aposit direction 

 

the problem might accur if  both timers will  ( somehow ) be on at the same time  - that will result in a short circuit ,  The diagram I have attached explains everything  

If  somebody can sugest a solution that will be much apreciatted ! 

I'm a newbie with very basic electronic knowledge 

 

Thank you !

 

switch-problem.jpg

Maybe connect a relay in series with switch one that is set to NC, or normally closed, if there is a short circuits, the relay will than be set to OPEN preventing the short?...Just bought 10 SDR-5V relays for $6-7...

  Joined December 30, 2021      3
Thursday at 05:59 AM

Thanks for your reply!

I will need to read a bit about relays as have a very little idea

Thanks again

  Joined December 29, 2021      2
Wednesday at 06:52 PM

Most relays can be connected in either of 2 configuration, NC (normally closed) or NO (normally open), so by wiring a relay in series with switch one in NC, power will only flow while the relay is energized, if power is cut, than the relay is de-energized cutting the circuit.....I think that may work, but I don't profess to be a pro, I found your post looking for help for my self.

  Joined December 30, 2021      3
Thursday at 05:59 AM

Thank you

If i won't be able to do it myself i would probably get an ardyino module ready to use for solar panels arrays

Iurie

  Joined December 29, 2021      2
Wednesday at 06:52 PM

Thinking it through, you probably want to wire it in a normally open config. If power is lost, the relay will default to the normal position of "open".

  Joined December 30, 2021      3
Thursday at 05:59 AM