Electricity: motive power systems – Reciprocating or oscillating motor – Energizing winding circuit control
Patent
1983-05-04
1985-10-15
Duggan, Donovan F.
Electricity: motive power systems
Reciprocating or oscillating motor
Energizing winding circuit control
318130, 318132, H02K 3314
Patent
active
045477124
ABSTRACT:
A subharmonic controller for a dual coil electromagnetic vibrator, which derives both power and timing from a conventional a.c. line, having a zero crossing detector providing pulses at twice line frequency to a phase control. The phase control provides a selectively variable pulse width and triggers a frequency divider, which in turn triggers a divide-by-two-counter. Pulses from each of the phase control, divider and counter are fed to a logic controller which generates plus and minus gate signals. The gate signals alternately fire a pair of oppositely-directed SCR's, each SCR connected in series with one of the dual coils across the a.c. line. A polarity detector and reset circuit restore the polarity information and synchronize it with the direction of conduction of the SCR's.
REFERENCES:
patent: 3331239 (1967-07-01), Larsen et al.
patent: 3400316 (1968-09-01), Kuschel
patent: 3648136 (1972-03-01), Krajewski et al.
patent: 3649893 (1972-03-01), Lajoie
patent: 3784930 (1974-01-01), Vosteen et al.
patent: 3840789 (1974-10-01), Dion
patent: 4049997 (1977-09-01), McGhee
patent: 4053817 (1977-10-01), Yeasting
Gotal John D.
Scott Junius D.
Duggan Donovan F.
FMC Corporation
Kamp Ronald C.
Megley Richard B.
Rudy Douglas W.
LandOfFree
Subharmonic controller for electromagnetic exciter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Subharmonic controller for electromagnetic exciter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Subharmonic controller for electromagnetic exciter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2431937