Regulated drive for vibratory feeders

Details Regulated drive for vibratory feeders Regulated drive for vibratory feeders

1997-05-30

2000-06-13

Wong, Peter S.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

363 97, 318114, H02M 3335

Patent

active

060757140

ABSTRACT:
A vibratory device having a drive circuit for providing a highly regulated drive voltage/current to the vibrator. A DC voltage is derived from line voltage. A DC-to-DC converter steps up the voltage to at least the desired voltage for vibration. The stepped up DC voltage is provided to the vibratory coils through a path containing a switch. The switch is controlled by an oscillator which turns the switch on and off at a desired vibration frequency so as to provide an alternating current through the coil for generating the vibratory force.

REFERENCES:
patent: 4144480 (1979-03-01), Nagasaki et al.
patent: 4471418 (1984-09-01), Tuma
patent: 4949312 (1990-08-01), Iwasawa
patent: 5656896 (1997-08-01), Ogiwara et al.
patent: 5754016 (1998-05-01), Jovanovic et al.
patent: 5757629 (1998-05-01), Yntema et al.
patent: 5761055 (1998-06-01), Okada et al.

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