[Elecraft] K1 Power Supply

[Bob Nielsen]

Err, did you mean 3 amp instead of 3 watt?  1 amp at 12v = 12 watts,  
of course.  I have found the MFJ-4103 (2.89 A) to be a suitable  
supply for my K2 (except that the output isn't quite high enough to  
maintain battery charge with the KBT2 installed) and it should be a  
good choice for the K1 also.  It's a quiet lightweight switcher which  
will work on both 120 and 240 volt systems.

73 - Bob, N7XY

On Mar 18, 2007, at 10:46 PM, Don Wilhelm wrote:

> Al,
>
> Check the Specifications section of the manual.  You should find  
> that the current draw at 5 watts is less than 1 Amp.  If your K1  
> has options, that current draw may increase a bit, but in any case,  
> a 3 watt power source should be more than adequate - actually a 1  
> amp supply may suffice, but if you are investing in a power supply  
> consider allowing some reserve, hence my recommendation for a 3  
> watt or greater supply.  Resist the temptation to use a wall wart  
> supply - the voltages on some of the 12 volt wall warts can be as  
> high as 17 volts - use a regulated supply rated at 12 to 13.8 volts.
>
> 73,
> Don W3FPR
>
> Al & Dianne Bruce wrote:
>> I am curious abt a power supply for the K1. The instruction book  
>> calls for a 12-14V unit. How careful do I need to be abt the  
>> amperage?
>>                                             Al
>
> _______________________________________________
> Elecraft mailing list
> Post to: Elecraft at mailman.qth.net
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
>