[time-nuts] Thunderbolt Supply

[Bob Camp]

Hi

Can be done with a couple of switchers. I'd do the switcher => LDO trick to
clean things up. Bert has a setup running that way. 

I would not try to run one directly off of a battery. Either you would have
a pretty big battery, or it would not last long. 

Bob

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Pete Lancashire
Sent: Monday, February 14, 2011 11:51 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Thunderbolt Supply

has anyone done a setup where the TB is running from a battery when
one is using its output. Something like you do
with pico amp meters, or I do with the Fluke 845AB null meter ?

-pete

On Sun, Feb 13, 2011 at 11:29 PM, Flemming Larsen <oz6oi at yahoo.dk> wrote:
> I have a Power-One switching power supply that puts out +/- 15 Volts in
addition to +5 Volts. I was planning to add a pair of 7812/7912 voltage
regulators to provide the required +/- 12 Volts to the Thunderbolt.
>
> I would welcome any suggestions to improvements in this very basic design,
including additional filtering, etc.
>
> Please post or email.
>
> BTW, has anyone considered using one of the many DC-to-DC PSUs that are
available for powering mobile PCs from +12 Volts? They appear to be ideal
for powering the Thunderbird from almost any DC power source, including a 12
Volt battery.
>
> -- Flemming Larsen, OZ6OI/KB6ADS
>
>   oz6oi at yahoo.dk
>
>
>
>>
>
>
>
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