Building a switch to invert current

I got a small electrical engine the other day, and I have to hook it up to two switches so that one switch starts the engine clockwise and the other counter-clockwise. My initial thought was to simply hook it up to two separate batteries each with a switch and one with the current reverted (like illustrated). But I'm wondering if there's a better way to go about this. For instance I have no idea if accidently activating both switches simultaneously will blow up the engine :s

Picture of Building a switch to invert current
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Jaycub8 years ago
Don't worry, if you turn on both switches in this circut nothing bad would happen to the motor. It would just be shorting-out the batteries in series.
comodore8 years ago
What you need is an H-bridge, that's just the thing used in toy cars, so it can go forward and reverse.
Here is an Instructables on how to make it.

Hope it helps! :D
Flark (author)  comodore8 years ago
This does look like exactly what I need :) thank you for the suggestion (thanks to gmoon also).
comodore Flark8 years ago
ok, just trying to help. :D
more about transfer switch
what? :)
Padlock8 years ago
Ignore the schematic I made above, if you already read it. It doesn't work!
Flark (author)  Padlock8 years ago
That's fine. Thanks for the help :) I've done a temporary solution like the one I sketched but will look into the H-bridge for the final solution
gmoon8 years ago
You might search on instructables (or elsewhere) for H bridge, there are several examples...
Flark (author) 8 years ago
Thank you for the suggestions. I do need the two switches to be separated though as they need to be pressed in two physically different locations, so I'm not sure if the DPDT-switch would work. I've found some schematics for DPDT switches, so will look into those to see if the logic can be transferred into something home-made. Again, thanks for the suggestions :)
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