Thanks for the advice, guys. I'm still in the early stages, just scoping a parts list. I believe my planned backup unit (a Raven) also has a common rail for its outputs. So in total, I'd need to switch four circuits to separately isolate the outputs.
I was thinking about using DPST switches, but after getting burned by a switch on my Level 2, I'd rather not run my primary and backup through a single point of failure. I could run each altimeter and its own outputs through a single DPST, but that almost seems to defeat the purpose of having separately-switched outputs. I'll run all this by my L3CC, once I figure out who that's going to be. Thanks again, Casey On Wed, Jun 22, 2011 at 7:59 PM, Bdale Garbee <[email protected]> wrote: > On Wed, 22 Jun 2011 18:22:11 -0700, Casey Barker <[email protected]> > wrote: > > I was hoping I could get away with just the one switch for the > Telemetrum, > > plus whatever switch(es) my (heterogeneous) backup needs. Otherwise, I > can > > see my avionics bay quickly turning into a bit of a rat's nest. > > Keith's advice is spot-on. You need to talk to your L3CC about this. > They don't all feel the same way, and what one thinks is great another > may be very uncomfortable with. > > I personally used a separate DPST switch to break the common return from > the igniters on each of the two altimeters in my L3 project to satisfy > my L3CC's expectations. > > I'd be happy to review your proposed design before you build it if you'd > like. > > Bdale >
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