evandude
New Member
I am planning to build this:
**broken link removed**
as graciously provided by hantto.
I need to know what wire gauge I would have to use. I figure at 12v output, 8v input (worst case) and 80% efficiency the coil would have to withstand 15A average. I found a table of current capacities for the various AWG wire sizes. According to that, I'd need a 10-gauge wire for "power transmission" for that amount of current, but only an 18-gauge for "chassis wiring". Obviously 10 gauge is way too big for this, 18-gauge sounds more realistic, but I'd like to get a second opinion.
the wire he describes as actually using is 0.75mm, which corresponds to just under 20 gauge, which as far as I can tell, is only rated for about 1.4 amps. I am sure there are rules of thumb for how much you can overshoot these ratings, but I don't know them, and I don't want to blow things up. The best I can get at radio shack is 22 gauge which seems too narrow for this application, but I can probably get larger wire from the professors here at school.
As I said, I'd just like some info from those more experienced with these things. thanks![/url]
**broken link removed**
as graciously provided by hantto.
I need to know what wire gauge I would have to use. I figure at 12v output, 8v input (worst case) and 80% efficiency the coil would have to withstand 15A average. I found a table of current capacities for the various AWG wire sizes. According to that, I'd need a 10-gauge wire for "power transmission" for that amount of current, but only an 18-gauge for "chassis wiring". Obviously 10 gauge is way too big for this, 18-gauge sounds more realistic, but I'd like to get a second opinion.
the wire he describes as actually using is 0.75mm, which corresponds to just under 20 gauge, which as far as I can tell, is only rated for about 1.4 amps. I am sure there are rules of thumb for how much you can overshoot these ratings, but I don't know them, and I don't want to blow things up. The best I can get at radio shack is 22 gauge which seems too narrow for this application, but I can probably get larger wire from the professors here at school.
As I said, I'd just like some info from those more experienced with these things. thanks![/url]