[Elecraft] laptop power supply to power KX3

[Jon K Hellan]

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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