[time-nuts] FE-5680A Voltage?

Bob Camp lists at rtty.us
Thu Sep 12 20:54:37 EDT 2013


Hi

Looking at the 2496 data sheet - you probably want to put something > 20 volts into the board if you want a reasonable 15 volts out of it.

Bob

On Sep 12, 2013, at 8:01 PM, Bob Stewart <bob at evoria.net> wrote:

> I just remembered:  Someone here or on the Agilent list suggested I buy a handful of those LM2596 buckboards a few weeks ago.   That one wallwart should have enough headroom to give me 15V.
> 
> Bob
> 
> 
> 
> 
> 
>> ________________________________
>> From: Bob Camp <lists at rtty.us>
>> To: Discussion of precise time and frequency measurement <time-nuts at febo.com> 
>> Sent: Thursday, September 12, 2013 4:52 PM
>> Subject: Re: [time-nuts] FE-5680A Voltage?
>> 
>> 
>> Hi
>> 
>> As I recall, 15 volts is sort of the minimum they recommend on most of the variations of the 5680. The internal regulators will probably be happier with 18 volts than with 14.25. You best bet is indeed a 15 V supply. 
>> 
>> Bob
>> 
>> On Sep 12, 2013, at 11:03 AM, Bob Stewart <bob at evoria.net> wrote:
>> 
>>> I decided to order a Rb standard, and I was wondering what the lower limit on the 15V power requirement is?  I have a PSU that will go up to 14.25V and my next closest is 18V.  Should I just get a new 15V PSU before this gets in?  Maybe I can make a quick mod on the big one and take it up to 15V.
>>> 
>>> Bob - AE6RV
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