[time-nuts] FE-5680A Voltage tolerance

Peter Gottlieb nerd at verizon.net
Thu Jan 19 23:15:50 EST 2012


When I got my first unit I hooked it up to my protoboard power supply which is 
rated at 15 volts 0.5 amps and 5 volts 1 amp.  I was annoyed that it took about 
10 minutes to lock up until I realized the 15 volt supply was down near 11.5 
volts.  Oops.  Substituting my small B&K bench supply (good for up to 3 amps) 
resulted in a lock in under a couple of minutes.  Perhaps my unit's internal 
adjustments are still just about right.  It would be nice to get the alignment 
procedure for the thing, but I suppose, fat chance of that.

Peter


On 1/19/2012 6:45 PM, gonzo . wrote:
> Experiment for the day.
> I thought I'd follow Dons quote and see how tolerant my unit is.
> My benchmark is at 15.5V it locks in about 3min.
> I backed off the supply to 10.8V and the lock time (from cold) is 8min.
>
> I thought this was interesting given several people report they are unable to get a lock when running lower voltage.
>
> ian
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