eHam

eHam Forums => Misc => Topic started by: KC9AIK on June 19, 2002, 02:17:58 AM



Title: Power Supplies
Post by: KC9AIK on June 19, 2002, 02:17:58 AM
Hi everyone,
this may sound a little stupid, but I recently wondered a lot about the following thing. Is there any reason, why I can not use an ordinary wall plug-in adaptor to power a mobile rig, instead of having one of those huge, heavy power supplies running???
Thanks a lot,
73, Kilian


Title: Power Supplies
Post by: WA4MJF on June 19, 2002, 10:47:51 AM
The current requirement would exceed the capacity
of wall warts.

73 de Ronnie


Title: Power Supplies
Post by: WB2WIK on June 19, 2002, 11:50:44 AM
If your "wall adapter" is regulated, and rated for the voltage and current required, go ahead and use it.

However, most won't be.

The biggest "wall adapter" I own, and I think it's the biggest I've ever seen, is for my Dell laptop computer and is rated 12V at 4A, or a total of 48W.  That might power a small 5-10W rig, and may be filtered well enough to do so (although I haven't tried it).  But for a 50W VHF mobile, or the typical 100W PEP HF transceiver, it's not nearly sufficient.

WB2WIK/6


Title: Power Supplies
Post by: KL7IPV on June 20, 2002, 12:14:04 AM
I put powerpole connectors on my HP laptop 12VDC 3.5A wall wart and used it to run my IC-706 MkII on HF. I ran the power down to "L" and it ran just fine. I didn't notice any birdies or other non-ham useful things happening either. I also use the wall wart to recharge my 12VDC7AH battery. Experiment...one just never knows....
73
Frank
KL7IPV