[GreenKeys] My experiences and questions

[WA5CAB at cs.com]

John,

As I think I said earlier, I've operated and owned 28 stuff but never 
worked on it so I don't know whether you can run the selector magnets in Series 
with 20 MA or Parallel with 60 MA (as you can the M15 holding magnets) but 
what John meant was that whether parallel or series, it matters how you 
connect one magnet relative to the other.  Sorta like seriesing diodes.  Connected 
one way they still work as a diode. with twice the forward drop.  Connected 
the other way, they're open (until you exceed the PIV rating).  With two 
magnets, wired one way the North and South ends will each be on the same end 
and they are magnetically in parallel (regardless of whether they are 
electrically in series or parallel) and they will aid each other and work.  Reverse 
the two wires to only one of the magnets and they will fight each other and 
won't work any better with current flowing than with no current.   

In a message dated 5/7/2009 4:09:14 PM Central Daylight Time, 
jdkopke at cablespeed.com writes: 
> Jon, I thought Series with 60ma was like the norm,at least that's what I 
> get from 
> some of the RTTY journal's. 
> 

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480