The only easy thing to change in this regard is the 1N4007. It probably drops close to a volt, and could be replaced with a 1N5817, etc. But if you want to pull more current, you also have to change the choke and the self-resetting fuse. We're working on that.
Wayne On Mar 15, 2012, at 11:53 AM, Joe Subich, W4TV wrote: > > Instead of simply raising the current limit, you should be addressing > the voltage issues as well. With 1.7V (SB530 and 1N4007) of diode > drop plus I^2*R losses in two chokes and the switch, the "+12V" is > already low (11.8V) with a 13.8V supply. Run the K3 on battery or > figure in a typical 0.8V-1.2V sag in the input supply in transmit and > the "+12V" output is less than 10.5V. > > 73, > > ... Joe, W4TV > > > On 3/15/2012 12:18 PM, Paul Saffren N6HZ wrote: >> Many of you have asked if there is a way to modify your K3 so that >> it can >> provide enough current to supply a P3 with the SVGA board. We are >> currently >> working on a mod kit that will do just that. We'll let you know as >> soon as >> we have something available. >> >> >> 73, >> >> Paul (n6hz) >> >> >> -- >> View this message in context: >> http://elecraft.365791.n2.nabble.com/K3-12VDC-OUT-increased-current-mod-available-soon-tp7376146p7376146.html >> Sent from the Elecraft mailing list archive at Nabble.com. >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
