Energy efficient controlled magnetic field generator circuit

摘要

A magnetic waveform generator circuit includes a first switch coupled to a first rectifier element at a first node, a first capacitor coupled, at a second node to the first switch, and to a fourth node, a second capacitor coupled, at a third node to the first rectifier element, and to the fourth node, and an inductor coupled between the first and the fourth nodes. The first switch is operable to be in an ON state during a first time period and in an off state during a second time period. The first switch and the first rectifier element are configured to enable the inductor to generate, during the first and the second time periods, a magnetic field having a waveform resembling a positive half-cycle of a triangular waveform.

主权项

1. A magnetic waveform generator circuit, the circuit comprising:
a first switch coupled to a first rectifier element at a first node; a first capacitor coupled, at a second node to the first switch, and to a fourth node; a second capacitor coupled, at a third node to the first rectifier element, and to the fourth node; an inductor coupled between the first and the fourth nodes; a second switch coupled to a second rectifier element at the first node, wherein the first switch is coupled in parallel to the second diode and the second switch is coupled in parallel to the first diode; and a first and a second dipole switch and a third and fourth capacitor, wherein: the first switch is operable to be in an ON state during a first time period and in an off state during a second time period, the first switch and the first rectifier element are configured to enable the inductor to generate, during the first and the second time periods, a magnetic field having a waveform resembling a positive half-cycle of a triangular waveform, the second switch and the second rectifier element are configured to enable the inductor to generate, during a third and a fourth time periods, a magnetic field having a waveform resembling a negative half-cycle of the triangular waveform, the first dipole switch is operable, in a first state, to couple the second node through the third capacitor to the first capacitor, and the second dipole switch is operable, in a first state, to couple the third node through the fourth capacitor to the second capacitor to allow generation of a high amplitude triangular magnetic field waveform.