[Elecraft] Power Cord Questions

[Fred Jensen]

On 3/9/2012 7:29 PM, Don Wilhelm wrote:
> I will differ with Fred - the fuse should be mounted close to the power
> supply.

I thought that's what I said ... if I didn't, I was wrong ... as close 
to the power supply as possible.  Many present era power supplies have 
over-current protection built in, and in those cases, I wouldn't use an 
external fuse at all, just more places for voltage drops.

If you're on a battery [even if float charged], you really must fuse as 
close to the battery as possible, high capacity batteries can deliver an 
incredible amount of energy very very quickly.  If you're in a vehicle, 
both + and - leads should be fused.  The + lead for the obvious, the - 
lead in case the negative battery connection becomes faulty.  In that 
case, the starting current would find its way back to the battery 
through the radio neg lead.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2012 Cal QSO Party 6-7 Oct 2012
- www.cqp.org