04-08-2021, 09:43 AM
Hey Terry
I have never come across a FC with such a high resistance before (not that I'm that experienced). Usually they seem to fall in the range of 650-2000 ohms but this is such an early set for me.
Input is 110vac resistance across FC is 7K Ohms
So I checked the voltage drop across the FC and I get 222vdc
The individual FC leads are
302v
-81v
221v
the plate voltage from #1 45 is 290vdc
" " " #2 45 is 302vdc
so E/R, 222v/7000r=.03a
E/R, 222/.03a=7400 ohms
So it looks like @ 7K the field looks good? Or the bigger question is my math correct!
Thanks
Eric
I have never come across a FC with such a high resistance before (not that I'm that experienced). Usually they seem to fall in the range of 650-2000 ohms but this is such an early set for me.
Input is 110vac resistance across FC is 7K Ohms
So I checked the voltage drop across the FC and I get 222vdc
The individual FC leads are
302v
-81v
221v
the plate voltage from #1 45 is 290vdc
" " " #2 45 is 302vdc
so E/R, 222v/7000r=.03a
E/R, 222/.03a=7400 ohms
So it looks like @ 7K the field looks good? Or the bigger question is my math correct!
Thanks
Eric
