However, we get into issues of your having done work at the 100mA
levels and we thus turn to my earlier comments about accuracy.
100mA on an 8 Ampere full scale 3.5 inch meter is slightly more than
1% deflection (less than the width of the needle).
Richard,
you got the "wires crossed" - mixing two cases.
W9UCW measured data I have been quoting in my article at K3BU.us, he SET the
power for the bottom meter to read full scale on his 100 mA meter. Then he read
the top meter which showed readings in the 40 to 60 % down.
I have not done my measurements besides "hand test" and frying the Hustler
coils. Just brief test to see how much deflection I get with 100W on 8A meter.
I know a thing or two about measurements, done my years at IBM Test Engineering
Dept. I will document my tribulations and if get it, use infrared camera too.
If W9UCW lied, deceived us I will be the first one to choke him :-) So far he
put figures on what I knew and they jive.
Why don't you guys that know pitfalls of measurement do it and report ?????
Hello????
Yuri. K3BU.us
I am not as dumb as Reg portrays me. Got highest IBM Award - Outstanding
Contribution Award signed by then chairman Frank Cary for Design and
Development Excellence. BTW this was doing something that "experts" at IBM
Endicott lab said it couldn't be done. This coil stuff is trivial in
comparison.
|