[GreenKeys] Loop supply voltage

[E.]

I could be going off onto the wrong rail here, but sometimes those loops had to travel over good distances, so they needed the higher voltage in order to keep the “signal" over the line from degrading….. right?


> On Jan 18, 2025, at 10:06 PM, steve bennett via GreenKeys <greenkeys at mailman.qth.net> wrote:
> 
> Harold,
> 
> I get it about the inductance.
> But once the coil reaches steady state you are just left with the resistance in a DC circuit.
> So if the goal is to have 60mA at steady state 100v is way too much. What am I missing?
> The loop supply is DC correct? Maybe that is where I'm confused. Is the loop AC?
> 
> -Steve