Do you have a question? Post it now! No Registration Necessary
December 18, 2007, 3:15 pm
rate this thread
I need help in designing a D.C. solenoid former. I am aware of eddy
currents in an A.C. solenoid or transformer, & note that D.C.
solenoids can have a metal former wich is in effect a shorted turn,
(but as there is no alternating magnetic field there is no eddy
currents) but I wish to pulse a solenoid at about 3 Hz. The solenoid
current will be about 2 amps. I could slit the former & provide an air
gap, but prefer not to. I have searched the net but can't find any
info re shorted turns with pulsed D.C. Any constructive comments
greatly appreciated. Davey.