Cookie, Is this a switcher or serious iron type PS? Looks like all the Jetstreams may be switchers, but could be wrong.
I like my PS heavy, not me radio ;o) 73, Julius WILLIS COOKE-2 wrote: > > You might take a look at the Jetstream JTPS35BCMA. It includes volt and > ammeters, connections for the rig plus low amp connections for accessories > and a connection point for the battery. The switch to battery is > automatic when AC power is lost. The artifacts are reasonable and > liveable. On the down side, the fan comes on with a 1 amp load and is > noiser that I would like, but liveable. > Willis 'Cookie' Cooke > K5EWJ > > > > > ________________________________ > From: Wes Stewart <[email protected]> > To: [email protected]; Julius Fazekas n2wn <[email protected]> > Sent: Tue, January 5, 2010 1:22:47 PM > Subject: Re: [Elecraft] [K3] Smart Charger > > Julius, et. al, > > My charger is actually a marriage of some commercial gear with a few > tweaks. The motivation for this was the absolutely horrible RFI from the > switch-mode charger in my 5th wheel trailer. It was so bad that when I > had the trailer stored here at home the RFI would actually interfere with > OTA TV, so you can imagine what it did to the ham bands. > > Rather than reinventing the wheel, I used an Astron RS-35M for its case, > metering, raw DC, heat sink and pass transistors. Rather than building > my own board, I married this to an A&A Engineering smart charger board, > (http://www.a-aengineering.com/150PCAAppNotes.pdf) doing a little trickery > to allow the use of a fixed current sense resistor while still having some > adjustment of the max charge current. > > The heart of this circuit is the UC3906 integrated circuit that is > designed for just this purpose. > (http://focus.ti.com/docs/prod/folders/print/uc3906.html) > > I shopped the idea of an article about this to ARRL but they weren't > interested, so I never completed any further documentation. > > Wes N7WS > > > > --- On Tue, 1/5/10, Julius Fazekas n2wn <[email protected]> wrote: > > From: Julius Fazekas n2wn <[email protected]> > Subject: Re: [Elecraft] [K3] New K3 User and New Ham > To: [email protected] > Date: Tuesday, January 5, 2010, 10:17 AM > > > Wes, > > Do share your 30A "smart charger". It's easy enough to find information > for > lower current chargers, but less so for something in this range. > > cheers, > Julius > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > 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:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > ----- Julius Fazekas N2WN Tennessee Contest Group http://www.k4ro.net/tcg/index.html Tennessee QSO Party http://www.tnqp.org/ Elecraft K2/100 #4455 Elecraft K3/100 #366 Elecraft K3 #1875 -- View this message in context: http://n2.nabble.com/New-K3-User-and-New-Ham-tp4253024p4261489.html Sent from the [K3] 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:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
