[time-nuts] Thunderbolt - any negatives ?

Roy Phillips phill.r1 at btinternet.com
Mon Jun 1 11:33:57 EDT 2009


Joe and others
I would recommend using a linear PSU, I have some made by a Company called 
Lascar (perhaps a different name in the States). These are not much larger 
than the Thunderbolt itself with a little more height. They have three 
separate VS./Rags, 5 volts and +15/-15 volt supplies of sufficient 
capacity - all with trim-pots. Mine has been working for at least one year 
non-stop - and you can be confident that it will not blown up, unlike some 
switched supplies.
Roy


----- Original Message ----- 
From: "J. L. Trantham" <jltran at worldnet.att.net>
To: "'Discussion of precise time and frequency measurement'" 
<time-nuts at febo.com>
Sent: Monday, June 01, 2009 3:40 PM
Subject: Re: [time-nuts] Thunderbolt - any negatives ?


> Pete,
>
> I have purchased units via the 'group buy' and directly from Bob Mokia
> (fluke.l).  One of the 'group buy' units, powered by the accompanying 
> 'group
> buy' power supply, died after being left on for a couple of days (as I
> recall).  I still have it disassembled in a box in line on my 'to do list'
> of things to fix.
>
> I was suspicious that the power supply might have been the culprit, 
> perhaps
> facilitated by frequent power outages (i.e. transients), even though the
> power supply still works.  Since then, I have only powered the units with
> linear power supplies with no problems.
>
> Joe
>
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of Pete Lancashire
> Sent: Sunday, May 31, 2009 10:33 PM
> To: time-nuts at febo.com
> Subject: [time-nuts] Thunderbolt - any negatives ?
>
> Thanks to those that have replied. It looks like just about everyone
> recommended the Thunderbolt. But before I invest .. any negative
> comments ? Specs, reliability, or ?
>
> -pete
>
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