[time-nuts] Anybody want a Thunderbolt power supply?

Bob kb8tq kb8tq at n1k.org
Wed Aug 31 20:49:33 EDT 2016


Hi

It is not that hard to do. Use a linear rather than a switching approach. Run the +12 and +5 supplies off of LT1764 regulators. The -12 is very low current, run it off of a low noise op amp. There are lots of toroidal line transformers that will drive something like this. 

Bob

> On Aug 31, 2016, at 6:20 PM, Cube Central <cubecentral at gmail.com> wrote:
> 
> Wow, given all the responses about the cleanliness of the power into a Thunderbolt, I would be even more interested in a power supply that did *not* leave the "last mile" up to me.  I would be more interested in a "pretty clean" power supply that I could just plug in and go.  Any thoughts of me actually wiring the last bit of it make me break out in a cold sweat and come face to face with my (established, and sadly slow-to-expand) limitations.
> 
> Maybe I'm the only one that would be interested in such a solution?  I hope not, but I can see that there is a lot to consider about such a thing.
> 
> Cheers!
> 
>    -Randal 
>        (at CubeCentral)
> 
> -----Original Message-----
> From: time-nuts [mailto:time-nuts-bounces at febo.com] On Behalf Of Bob Stewart
> Sent: Wednesday, 31 August, 2016 15:29
> To: Discussion of precise time and frequency measurement <time-nuts at febo.com>
> Subject: Re: [time-nuts] Anybody want a Thunderbolt power supply?
> 
> OTOH, how many time-nuts have any interest in paying for a power supply that's up to time-nuts standards?  It's really not easy to bring a small product to market at a small price.  Even if you completely discount the personal effort of design, construction, and marketing, there's the issue of packaging.  Without a package, it's just an amateur effort not worth considering.  With a package, such as a Hammond box, the price moves into new territory and nobody's interested.
> 
> Bob 
> 
> 
>      From: Charles Steinmetz <csteinmetz at yandex.com>
> To: time-nuts at febo.com
> Sent: Wednesday, August 31, 2016 4:24 PM
> Subject: Re: [time-nuts] Anybody want a Thunderbolt power supply?
> 
> Mark wrote:
> 
>> Some times a full linear supply is not a viable option due to power dissipation/size issues or the utter convenience of using a switching wall wart.
> 
> In the context of the present discussion -- powering a Tbolt for time-nuts use -- the first consideration would just be laughable and the second would be nothing but terminal laziness.
> 
> Best regards,
> 
> Charles
> 
> 
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
> 
> 
> 
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
> 
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.


More information about the time-nuts mailing list