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Apr 13, 2017 at 12:32 history edited CommunityBot
replaced http://electronics.stackexchange.com/ with https://electronics.stackexchange.com/
Feb 15, 2015 at 23:07 answer added Jorge Aldo timeline score: 0
Feb 6, 2015 at 6:43 answer added Dwayne Reid timeline score: 1
Feb 6, 2015 at 6:27 answer added Nedd timeline score: 0
Feb 5, 2015 at 7:28 comment added Nedd Also note that the 1N4148 diodes shown in the linked circuit are small signal diodes (low current). These are not the best parts to be using in automotive power circuits. (The answer mentioning a possible bad diode may have merit.) Use diodes of 1N400X series or better for this application.
Sep 24, 2014 at 16:34 comment added Ken Williams Are you running the circuit under the same load on the bench? the load will figure into the time equation and heavily affect the outcome.
Oct 7, 2013 at 20:04 comment added bronco21016 My understanding was that the regulator handled these spikes? I'm not running any kind of DIY circuit for the regulator I'm simply using a 12V - 5V USB regulator I found online meant for automotive applications.
Oct 6, 2013 at 9:09 comment added MattyZ Not sure exactly what the problem is, but as an aside you should note that the circuit as shown is not safe for devices connected to it. There can be large positive and negative voltage spikes on the battery terminals, and as shown these will be coupled right into the regulator and your device. There needs to be transient suppression of some kind added after the relay.
Oct 6, 2013 at 9:06 comment added MattyZ The ground on the far left is chassis ground. The ones on the right are the Pi's circuit ground. They need to be connected somehow for the circuit to work.
Oct 6, 2013 at 0:17 history tweeted twitter.com/#!/StackElectronix/status/386646302534402049
Oct 6, 2013 at 0:10 history edited placeholder CC BY-SA 3.0
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Oct 5, 2013 at 23:38 review First posts
Oct 6, 2013 at 0:10
Oct 5, 2013 at 23:29 history edited bronco21016 CC BY-SA 3.0
edited title
Oct 5, 2013 at 23:21 history asked bronco21016 CC BY-SA 3.0