Re: [Discuss-gnuradio] Mobile Power Supply for USRP

[Charles Swiger]

On Sun, 2007-05-06 at 10:59 -0400, Eric A. Cottrell wrote:
> Hello,
> 
> Is there a off-the-shelf product to power the USRP from 13.8 volts?  My
> understanding is the USRP needs a couple of amperes at 6 volts.  The
> best I saw was 1 Ampere maximum output.
> 

There's these from Jameco, YM12S05:

<http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&pa=923251&productId=923251>

9.6 to 14V in, 5.5V at 5A out. I was worried about the ripple in the
output (see data sheets) but has not been a problem.

Just needs one small resistor to set output voltage (1.2k for 5.5v)

http://musicriver.homeunix.com:8737/usrp_dcps_1.jpg

--Chuck