Hi
I have so many of them that I run them off big lab grade linear supplies.
That's not to good for a single unit.
The neatest way is to run some low drop out linear regulators off of a
switcher. That way you get it all. The tolerances on the supplies are such
that an LDO with a hundred mv dropout works with a +/- 12 volt +5 volt
switcher.
Bob
-----Original Message-----
From: Larry McDavid
Sent: Thursday, February 10, 2011 6:46 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Thunderbolt Supply
Certainly, I'd prefer a linear 3-output supply. But, I've not found a
suitable one yet, in linear or switching. TAPR offered one in the past
but has no more. So, I'm asking for recommendations and where to get one.
Larry
On 2/10/2011 3:32 PM, J. L. Trantham wrote:
I favor a linear regulated supply rather than a switching supply. I had a
TBolt die while connected to a switching supply in an environment where
there were frequent power outages.
...
-----Original Message-----
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com]On
Behalf Of Larry McDavid
...
I'm seeking a recommendation for a power supply for this Thunderbolt
receiver. There is much discussion about noise from some switching
supplies and the effect on phase noise of the 10 MHz output. The
Thunderbolt manual specifies the following supply and loads:
+12 vdc 750 mA
+ 5 vdc 400 mA
-12 vdc 10 mA
This combination is somewhat unusual in that the highest current is on
the 12 volt output rather than the 5 volt output. I'm asking if list
members have a favorite power supply for this unit, why and where I can
obtain one.
...
--
Best wishes,
Larry McDavid W6FUB
Anaheim, CA (20 miles southeast of Los Angeles, near Disneyland)
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