[Discuss-gnuradio] Re: Enclosure -- connection points for fan

[John Ackermann N8UR]

Matt Ettus said the following on 12/22/2006 01:28 PM:
>> I have an earlier USRP board (serial 258 or something like that) that
>> doesn't have a fan connector.  Any suggestion for the simplest way to
>> tie the fan to appropriate power?  I didn't find anything obvious on the
>> ettus.com site or the wiki about that.
>>   
> 
> Earlier USRPs don't have a fan connector.  Cut the connector off of the
> fan cable.  Solder the black wire to J1001, which is ground on the
> board.  Solder the red wire to the pin on the end of the power supply
> connector.  The fan will be a little loud since this is 6.3V on a fan
> rated for 4-7V.  You can put a 10 or 12 ohm resistor in line on the red
> wire if you want it to be quieter.

Thanks!

John