[time-nuts] Thunderbolt SMPS question

[Bob Camp]

Hi

It's also likely to have issues if you don't have something between -7 and
-13 on the V- supply. Current is low (10ma?). A good linear regulator is
useful on the +12. The +12 rail drops back to < 200 ma under most conditions
once the oven has warmed up.

Bob

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Azelio Boriani
Sent: Thursday, July 18, 2013 7:39 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Thunderbolt SMPS question

The TBolt requires 400mA on the +5V rail and 750mA on the +12V (TBolt
book 2003 page 3-4)

On Thu, Jul 18, 2013 at 12:55 PM, Chris Wilson <chris at chriswilson.tv> wrote:
>
>
>   18/07/2013 11:47
>
> I have been chasing a really awkward BT ADSL line noise / line drop
> issue for weeks. In the end I realised why connecting to the BT master
> socket with an extension cable to the router stopped the issues, yet
> connecting the original twisted pairs BT cable brought it back.... I
> had installed a Thunderbolt on the roof and its SMPS was behind a
> studded wall in my upstairs office, right near the BT jack, with the
> cable running *right* by. I *THINK* either the TB itself, its power
> supply that came with it from China, or just possibly a 5V SMPS I use
> to power one of David Partridge's divider boards, also next to the TB
> power supply is the culprit. The 5V SMPS is just a wall wart, but
> regulated and branded. I can easily find another, or even build a
> little linear supply for it. I don't think the divider board itself is
> the cause.
>
>
> However, I am unsure just what, and how critical, the demands of the TB
> are. Has anyone had this sort of issue with a TB power supply, or had
> cause to either find another, or find an alternative? I am not yet
> sure if the PS is a sealed up box, or if a repair may be an option. Any
> advice please? Thanks.
>
> --
>        Best Regards,
>                    Chris Wilson.
> mailto: chris at chriswilson.tv
>
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