[Elecraft] USB Charger from KX3 Battery

[K9MA]

I'm planning to take the KX2 on a long trip, and it occurred to me that 
it might be useful to be able to charge my phone from its battery.  I 
just took apart a cheap automobile charger and wired a socket to its 
input.  It works down to about 8 V.  You could build your own, but at $3 
it's hard to beat.  If weight weren't an issue, you could just make an 
adapter from the battery plug to a cigarette lighter socket.

If you really want to build your own, look at the data sheet for the 
MC34063A.

73,

Scott K9MA

-- 
Scott  K9MA

k9ma at sdellington.us