[time-nuts] Anybody want a Thunderbolt power supply?

[Bob kb8tq]

Hi

The easy answer for a couple dozen Tbolts is a +15 V high current linear supply and a low power -15 V linear. Wire them to regulators mounted on chunks of perf board.

Bob

> On Sep 1, 2016, at 12:24 AM, DaveH <info at blackmountainforge.com> wrote:
> 
> Someone could come out with a circuit board for a single configurable
> voltage and decent noise specs. Use three of them for a Tbolt.
> 
> It is really easy to use the transformer from an old microwave oven to make
> your own power transformer - the HV and the 110 volt windings are on
> separate parts of the core so it is a matter of a few minutes to hacksaw off
> the HV winding and you can use standard household THHN wire for your new
> secondary - wind ten turns, measure the voltage and use that to figure how
> many turns you actually needed.
> 
> If someone came out with such a bare board, I would buy 20 of them just to
> keep around for projects.
> 
> Dave
> 
>> -----Original Message-----
>> From: time-nuts [mailto:time-nuts-bounces at febo.com] On Behalf 
>> Of Bob Stewart
>> Sent: Wednesday, August 31, 2016 14:29
>> To: Discussion of precise time and frequency measurement
>> Subject: Re: [time-nuts] Anybody want a Thunderbolt power supply?
>> 
>> 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 <csteinmetz at yandex.com>
>> To: time-nuts at 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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