[Elecraft] laptop power supply to power KX3

[David Cutter]

Thinkpad used on T32C and others.

David
G3UNA


----- Original Message ----- 
From: "Jon K Hellan" <hellan at acm.org>
To: <elecraft at mailman.qth.net>
Sent: Tuesday, September 18, 2012 11:56 AM
Subject: Re: [Elecraft] laptop power supply to power KX3


> On 09/18/2012 01:44 PM, Johnny wrote:
>> Yes , correct , laptop supplies are often RF noisy.
>
> Any particular laptop and laptop supply brands favoured by dxpeditions?
>
> Jon LA4RT
>
>>
>> Sent from my  iPhone 4
>>
>> "Fred Townsend" <ftownsend at sbcglobal.net> 於 2012年9月18日 下午2:04 寫道： 
>> 
>>
>>> Jeff, caution.  Laptop power external supplies are designed to be 
>>> followed
>>> by precision internal regulators that handle the logic voltages and 
>>> charging
>>> the battery. The external supplies are not well regulated and can be 
>>> quite
>>> noisy.  They may not be the best supplies for ham rigs.
>>> 73
>>> Fred, AE6QL
>>>
>>> -----Original Message-----
>>> From: elecraft-bounces at mailman.qth.net
>>> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Jeff Herr
>>> Sent: Monday, September 17, 2012 6:40 PM
>>> To: 'Elecraft Reflector'
>>> Subject: [Elecraft] laptop power supply to power KX3
>>>
>>> While at work I went through our stock of power supplies for the various
>>> makes of laptops we use.
>>> I found that Toshiba supplies are specified 15v and ranged in current
>>> capability from 2.5 amps and up.
>>>
>>> Dell, Lenovo, HP, Acer, Asus all use 19v supplies.
>>>
>>> Those Toshiba supplies are very small.
>>>
>>> WW6L
>>>
>>>
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>
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