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Discussion of precise time and frequency measurement

Re: [time-nuts] Anybody want a Thunderbolt power supply

Cube Central

Thu, Sep 1, 2016 1:13 AM

With the talk of Thunderbolt power supplies and their qualities, and after
seeing the post about the TAPR HPSDR LPU... I am beginning to wonder about
the power source I have for mine, as the "Temp" field shown on the following
link has always been funny. It seems to track and keep the outputs up well
enough, but I wonder if a better power supply is warranted. I don't have
the background to feel confident in creating one that plugs into Mains
power, even with a kit from TAPR. I've searched for similar issues (some
time back) but didn't come up with an answer. Maybe someone here might know
what is going on? Thanks in advance (link follows)

http://i.imgur.com/ByXhFLS.png

-Randal
	(at CubeCentral)

With the talk of Thunderbolt power supplies and their qualities, and after seeing the post about the TAPR HPSDR LPU... I am beginning to wonder about the power source I have for mine, as the "Temp" field shown on the following link has always been funny. It seems to track and keep the outputs up well enough, but I wonder if a better power supply is warranted. I don't have the background to feel confident in creating one that plugs into Mains power, even with a kit from TAPR. I've searched for similar issues (some time back) but didn't come up with an answer. Maybe someone here might know what is going on? Thanks in advance (link follows) http://i.imgur.com/ByXhFLS.png -Randal (at CubeCentral)

Bob Camp

Thu, Sep 1, 2016 1:45 AM

Just get a linear supply from somebody you have heard of before and it will do fine.
The key point is to avoid a switcher. There are still lots of linears out there. The designs
have not changed much for the last 40 years. They pretty much all do it the same way.

Bob

On Aug 31, 2016, at 9:13 PM, Cube Central cubecentral@gmail.com wrote:

http://i.imgur.com/ByXhFLS.png

-Randal
	(at CubeCentral)

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HI Just get a linear supply from somebody you have heard of before and it will do fine. The key point is to avoid a switcher. There are still lots of linears out there. The designs have not changed much for the last 40 years. They pretty much all do it the same way. Bob > On Aug 31, 2016, at 9:13 PM, Cube Central <cubecentral@gmail.com> wrote: > > With the talk of Thunderbolt power supplies and their qualities, and after > seeing the post about the TAPR HPSDR LPU... I am beginning to wonder about > the power source I have for mine, as the "Temp" field shown on the following > link has always been funny. It seems to track and keep the outputs up well > enough, but I wonder if a better power supply is warranted. I don't have > the background to feel confident in creating one that plugs into Mains > power, even with a kit from TAPR. I've searched for similar issues (some > time back) but didn't come up with an answer. Maybe someone here might know > what is going on? Thanks in advance (link follows) > > http://i.imgur.com/ByXhFLS.png > > > -Randal > (at CubeCentral) > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.