[Elecraft] Walwart power?

michael taylor mctylr at gmail.com
Tue Dec 23 18:31:16 EST 2008


On Tue, Dec 23, 2008 at 5:43 PM, Burke Jones <tacgear at gmail.com> wrote:
> Could I use a 12V 500ma to power my KX1 when at home?

The KX1 manual suggests it uses 300-700 mA on transmit, depending on
voltage. Assuming you don't need to rectify (or use a ultra-low
dropout voltage regulator) it should work but may limit your power
output to less than 3W max.

Some home / small office Ethernet hubs and switches use largish
wall-warts, I have a couple with 12Vdc, 1A wall-warts.

You may need to add a low-pass filter to filter any 60 Hz interference
and harmonics, such a passive 2nd or 3rd-order RC or LC low-pass
filter.

-Michael, VE3TIX


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