[time-nuts] FE 5680A supply voltage

2009-05-27 Thread Leigh L. Klotz, Jr. WA5ZNU 
Is anyone familiar with the hazards of an undervoltage supply on an FE 5680A?

I've seen reports of users running it at a more commonly available 13.2V
instead of 15V.

What module might be most affected?  The lamp?

Thanks,
Leigh.



___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

[time-nuts] FE 5680A supply voltage

2009-05-27 Thread Mark Sims 

The FEI units use two paralleled low dropout regulators to drop the 15V input 
voltage down to 14V.  There is also a series protection diode that drops some 
more voltage.  Combined you need at least 14.7V input.  Anything less and the 
regulators will not regulate and the unit will not work within spec.  Anything 
much more than 15V and the regulators will overheat (you can supposedly go to 
18V,  but I would not do it without lots of cooling).
_
Windows Live™: Keep your life in sync.
http://windowslive.com/explore?ocid=TXT_TAGLM_BR_life_in_synch_052009
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.