Patent ID: 6426610
Filing Date: 2002-07-30
Classification: H01F

Abstract:
A controlled ferroresonant constant current source, comprising:a ferromagnetic core; an input coil disposed about the core, the input coil to be connected to an alternating voltage source; an output coil disposed about the core and inductively coupled to the input coil, the output coil to be connected to a load; a control coil disposed about the core and inductively coupled to the output coil, the control coil to be connected to a switch for regulating the current output of the constant current source; a first capacitor coil disposed about the core and inductively coupled to the output coil, the first capacitor coil to be connected to a capacitor to provide a first resonant sub-circuit having maximum gain; and a second capacitor coil disposed about the core and inductively coupled to the control coil, the second capacitor coil to be connected to a capacitor to provide a second resonant sub-circuit to control resonant gain.