[Elecraft] KX3 power supply

Clay Autery cautery at montac.com
Mon Jan 18 16:23:10 EST 2016


And you could always put together a little inline circuit to drop the
voltage down to 13.8-14.1 or so...

73,

______________________
Clay Autery

On 1/18/2016 3:17 PM, John Kramer wrote:
> Thanks for the info Bob, and it’s reassuring to see that the KX3 has protection for 
> over voltage.
> One caveat with this PSU - I just tried to insert the DC plug from this  PSU to the KX3, 
> and I see it is too large for the KX3. Not a big deal, I will just cut it off and fit the correct
> size DC plug
>
> 73
>
> John, ZS5J
>
>
>
>
> On 18 Jan 2016, at 11:09 PM, Bob N3MNT <bob at hogbytes.com> wrote:
>
> The KX3 will shut down if the voltage is too high.
>
>
>
>
>
> Someone on this reflector suggested a power supply off eBay, that could be used 
> with the KX3 about 2 months ago. It is intended for Toshiba laptops. So I bought one, 
> this is the one…
>
> http://www.ebay.com/itm/15V-5A-AC-Adapter-Charger-Power-Supply-For-Toshiba-Tecra-A6-A7-A8-A9-A10-Laptop-/381356162365?hash=item58ca993d3d:g:Yk0AAOSwMmBVxX22 <http://www.ebay.com/itm/15V-5A-AC-Adapter-Charger-Power-Supply-For-Toshiba-Tecra-A6-A7-A8-A9-A10-Laptop-/381356162365?hash=item58ca993d3d:g:Yk0AAOSwMmBVxX22>
>
> It terminates in the right plug for the KX3 and is rated at 15 volts at max 5 amps, and only sells 
> for $ 7.79 including free shipping from Hong Kong.
> Anyway, it is cheap as chips so I bought one, and it arrived today. I hooked up to a volt meter
> and see it is 15.4 volts. I know it is better for TX IMD to have higher voltage supplied to the 
> KX3 rather than a voltage too low, but I am concerned that 15.4 volts may be too much
> for the KX3. I see in the KX3 manual specs, that recommended supply voltage is 8 - 15 volts.
> I would hate to hurt my KX3 with over voltage……anyone know if there would be any short
> or long term problems with running 15.4 volts to the KX3 ? It is just slightly above the 
> maximum recommended supply voltage
>
> 73
> John, ZS5J.
> ______________________________________________________________
>
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