[Elecraft] OT: Linear Power Supply?

[Jim Brown]

At most hamfests, I see wall warts for sale cheap (a buck or two). The 
heavier ones (and older ones) are more likely to be linear. I put Power Pole 
connectors on all my ham gear, and most of my computer peripherals), then 
run it off of 12V batteries that are float-charged by small power supplies. 
It's a very effective "poor man's UPS." You simply need to to size the 
supply so that it doesn't overcharge the battery.  

73,

Jim Brown K9YC