[time-nuts] +12 Volts 1A (plus a bit) supply?

[Bob Stewart]

Thanks Don!  That's exactly what I'm looking for.

Bob - AE6RV




----- Original Message -----
> From: Don Latham <djl at montana.com>
> To: Bob Stewart <bob at evoria.net>; Discussion of precise time and frequency measurement <time-nuts at febo.com>
> Cc: 
> Sent: Thursday, June 27, 2013 2:51 PM
> Subject: Re: [time-nuts] +12 Volts 1A (plus a bit) supply?
> 
> Small switching boards from the Old Country available for under $5 free
> shipping on epay. see, e.g. 380663903236 , 10 switching regulators for
> $13.00 free shipping. I have a bunch of these, use 'em all the time.
> Don
> 
> Bob Stewart
>>  The transformer gives me about 20 volts DC out.  Dropping 8 volts at 1
>>  amp is just a lot of power to void with a resistor.  I'd like to avoid
>>  having that much waste heat in the unit.  I do have an old power brick,
>>  but I was hoping there was some small switching board that people had
>>  had good luck with.  Maybe the brick is the best option.
>> 
>>  Bob
>> 
>> 
>> 
>> 
>> 
>>> ________________________________
>>>  From: Chris Albertson <albertson.chris at gmail.com>
>>> To: Bob Stewart <bob at evoria.net>; Discussion of precise time and
>>>  frequency measurement <time-nuts at febo.com>
>>> Sent: Thursday, June 27, 2013 1:32 PM
>>> Subject: Re: [time-nuts] +12 Volts 1A (plus a bit) supply?
>>> 
>>> 
>>> 
>>> 
>>> 
>>> You mean you have to many volts for a 12V regulator to drop> 
>  That's
>>>  easy to fix, use a resister in series.  Make the resister par of an RC
>>>  filter and cleaner power in the process.   
>>> 
>>> 
>>> I use a plug-in power brink from an old notebook computer.  I think
>>>  mine outputs 15V and then this gets dropped to 12V and 5V with a RC
>>>  filter and regulators. 
>>> 
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>> 
> 
> 
> -- 
> "Neither the voice of authority nor the weight of reason and argument
> are as significant as experiment, for thence comes quiet to the mind."
> De Erroribus Medicorum, R. Bacon, 13th century.
> "If you don't know what it is, don't poke it."
> Ghost in the Shell
> 
> 
> Dr. Don Latham AJ7LL
> Six Mile Systems LLP
> 17850 Six Mile Road
> POB 134
> Huson, MT, 59846
> VOX 406-626-4304
> Skype: buffler2
> www.lightningforensics.com
> www.sixmilesystems.com
>