Circuit arrangement for producing an open magnetic field

Details Circuit arrangement for producing an open magnetic field Circuit arrangement for producing an open magnetic field

1977-11-08

1979-12-04

Salce, Patrick R.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

Systems for magnetizing, demagnetizing, or controlling the...

219 1077, 363 39, 361113, H02H 710, H02M 748

Patent

active

041774949

ABSTRACT:
A magnetic field for coupling to a load is produced by means of apparatus having first and second amplifiers operating in phase opposition and connected to a first oscillating circuit for generating a first oscillating voltage of predetermined fundamental frequency, an inductor producing the magnetic field being an element of the first oscillating circuit. A second oscillating circuit connected to the first circuit furnishes a second oscillating voltage having a frequency corresponding to the third harmonic of the fundamental frequency and includes a coil positioned relative to the load in such a manner that substantially no energy is transferred from the coil to the load.

REFERENCES:
patent: 3395327 (1968-07-01), Kaiser et al.
patent: 3461372 (1969-08-01), Pickup et al.
patent: 3806688 (1974-04-01), MacKenzie et al.
patent: 3903469 (1975-09-01), Ravas
patent: 4017701 (1977-04-01), Mittelmann

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