Hi

The fact is that commercial linear supplies are still out there for pretty 
cheap prices. The price of a usable switcher is a very small fraction of the 
price of a Tbolt. Noise on the switcher is a big deal. Not everybody seems to 
care about low phase noise on the 10 MHz. Switcher frequency supply noise has 
very little impact on the PPS output. 

Bob

> On Aug 31, 2016, at 5:29 PM, Bob Stewart <b...@evoria.net> wrote:
> 
> 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 <csteinm...@yandex.com>
> To: time-nuts@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
> 
> 
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