Re: [DMCForum] Relays & current draw
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Re: [DMCForum] Relays & current draw

Use a standard SPDT relay, as most of the one sin your compartment are, 
and use the NC pin (the middle one) such that the actuators ground 
through it when it's off. Use the park brake switch to ground the 
relay's coil, but only supply power to the relay from an ignition source 
- so this will only work with the ignition on.

I had a request from a customer for the launcher system to work with the 
engine running,handbrake on, and that's how I did it, but using the 
system's own "immobilise" function rather than the direct actuator 
grounds (which use the body)


Ryan Wright wrote:

>They won't. I'm well versed in the installation of automotive
>electronics. All I'm doing is cutting power to three actuators when
>the e-brake is released. I just need to figure out how to do it
>without constantly drawing power via a relay... I don't see an easy
>way to add another switch to the brake. Maybe I can find a relay with
>a coil that draws substantially less power...

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