Device and method for driving symmetric load systems

Claim 2

A switchmode power control circuit for efficiently transferring charge between a first load and a second load of equivalent capacitance coupled in series, said switchmode power control circuit comprising: (a) a small filter inductor, said filter inductor storing energy during charge transfer; (b) a center tap, said first load negatively terminated at said center tap and positively terminated at a most positive terminal of a power supply, said second load positively terminated at said center tap and negatively terminated at a most negative terminal of said power supply, said filter inductor coupled at one end to said center tap; (c) a regenerative drive coupled to said first load, said second load, and said filter inductor, said regenerative drive consisting of a half bridge having symmetric switching topology, said regenerative drive driving charge flow across said center tap; and (d) a small bypass capacitor, said bypass capacitor functioning as a reservoir for high-frequency, low-level transients at said power supply.

Claim 3

The switchmode power control circuit of claim 1 wherein said small bypass capacitor filters small high-frequency ripple currents related to real power expended from said first load and said second load, said small bypass capacitor filtering requirements independent of said power supply characteristics.

Claim 4

The switchmode power control circuit of claim 1 further comprising a means for substantially balancing capacitance between said first load and said second load.

Claim 5

A switchmode power control circuit for efficiently transferring charge between a first single load and a second single load of equivalent capacitance, said switchmode power control circuit comprising: (a) a first circuit consisting of a filter inductor storing energy during charge transfer, a center tap whereon said first single load is positively terminated, a regenerative drive consisting of a half-bridge with symmetric switching topology coupled to said first single load and said filter inductor providing a non-inverted waveform signal within said first single load, and a small bypass capacitor functioning as a reservoir for high frequency, low-level transients, said first circuit coupled to a power supply; and (b) a second circuit consisting of a filter inductor storing energy during charge transfer, a center tap whereon said second single load is positively terminated, a regenerative drive consisting of a half-bridge with symmetric switching topology coupled to said second single load and said filter inductor providing an inverted waveform signal within said second single load, and a small bypass capacitor functioning as a reservoir for high frequency, low-level transients, said second circuit coupled to said power supply.

Claim 6

A switchmode power control circuit for efficiently transferring charge between a first single load and a second single load of equivalent capacitance, said switchmode power control circuit comprising: (a) a first circuit consisting of a filter inductor storing energy during charge transfer, a center tap whereon said first single load is positively terminated, a regenerative drive consisting of a half-bridge with symmetric switching topology coupled to said first single load and said filter inductor providing a non-inverted waveform signal within said first single load, and a small bypass capacitor functioning as a reservoir for high frequency, low-level transients, said first circuit coupled to a power supply; and (b) a second circuit consisting of a filter inductor storing energy during charge transfer, a center tap whereon said second single load is positively terminated, a regenerative drive consisting of a half-bridge with symmetric switching topology coupled to said second single load and said filter inductor providing an inverted waveform signal within said second single load, and a small bypass capacitor functioning as a reservoir for high frequency, low-level transients, said second circuit coupled to said power supply.

Claim 7

The switchmode power control circuit of claim 4 wherein said small bypass capacitors filter small high-frequency ripple currents related to real power expended from said first single load and said second single load, said small bypass capacitors filtering requirements independent of said power supply characteristics.

Claim 8

The switchmode power control circuit as in claim 1 , 2 , 3 , 4 , or 5 wherein apparent power is effectively canceled leaving real power only with no power demand associated with apparent power transients.

Claim 11

A switchmode power control circuit for efficiently transferring charge within a symmetric reactive load system, said switchmode power control circuit comprising: (a) a pre-stressed bimorph actuator, said pre-stressed bimorph actuator consisting of a first outer layer, a second outer layer, a middle layer, a first transductive element, and a second transductive element, said first transductive element and said second transductive element bonded to said middle layer, said first outer layer bonded to said first transductive element, said second outer layer bonded to said second transductive element, said pre-stressed bimorph actuator being planar; (b) a small filter inductor, said filter inductor storing energy during charge transfer; (c) a center tap, said first transductive element negatively terminated at said center tap and positively terminated at a most positive terminal of a power supply, said second transductive element positively terminated at said center tap and negatively terminated at a most negative terminal of said power supply, said filter inductor coupled at one end to said center tap; (d) a regenerative drive coupled to said first transductive element, said second transductive element, and said filter inductor, said regenerative drive consisting of a half bridge having symmetric switching topology, said regenerative drive driving charge flow across said center tap; and (e) a small bypass capacitor, said bypass capacitor functioning as a reservoir for high current transients at said power supply.

Claim 12

A switchmode power control circuit for efficiently transferring charge within a symmetric reactive load system, said switchmode power control circuit comprising: (a) a pre-stressed bimorph actuator, said pre-stressed bimorph actuator consisting of a first outer layer, a second outer layer, a middle layer, a first transductive element, and a second transductive element, said first transductive element and said second transductive element bonded to said middle layer, said first outer layer bonded to said first transductive element, said second outer layer bonded to said second transductive element, said pre-stressed bimorph actuator being planar; (b) a small filter inductor, said filter inductor storing energy during charge transfer; (c) a center tap, said first transductive element negatively terminated at said center tap and positively terminated at a most positive terminal of a power supply, said second transductive element positively terminated at said center tap and negatively terminated at a most negative terminal of said power supply, said filter inductor coupled at one end to said center tap; (d) a regenerative drive coupled to said first transductive element, said second transductive element, and said filter inductor, said regenerative drive consisting of a half bridge having symmetric switching topology, said regenerative drive driving charge flow across said center tap; and (e) a small bypass capacitor, said bypass capacitor functioning as a reservoir for high current transients at said power supply.

Claim 13

The switchmode power control circuit of claim 8 wherein said first outer layer, said second layer, and said middle layer are metals.

Claim 14

The switchmode power control circuit of claim 8 wherein said first outer layer and said second outer layer are aluminum.

Claim 15

The switchmode power control circuit of claim 8 wherein said middle layer is stainless steel.

Claim 16

The switchmode power control circuit of claim 8 wherein said middle layer is titanium.

Claim 17

The switchmode power control circuit of claim 8 wherein said first transductive element and said second transductive element are a piezoceramic.

Claim 18

The switchmode power control circuit of claim 8 further comprising an upper layer of polytetrafluoroethylene.

Claim 19

The switchmode power control circuit of claim 8 further comprising a lower layer of polytetrafluoroethylene.

Claim 20

The switchmode power control circuit of claim 8 wherein said first outer layer, said first transductive element, said middle layer, said second transductive element, and said second outer layer are bonded with an adhesive.

Claim 21

The switchmode power control circuit of claim 16 wherein said adhesive is a high temperature polyimide.

Claim 22

The switchmode power control circuit as in one of claims 8 - 17 wherein said first outer layer is positively poled, said second outer layer is negatively poled, said middle layer is neutral.

Claim 23

A switchmode power control circuit for efficiently transferring charge between a first load and a second load of equivalent capacitance coupled in series, said switchmode power control circuit comprising: (a) a small filter inductor, said filter inductor storing energy during charge transfer; (b) a center tap, said first load negatively terminated at said center tap and positively terminated at a most positive terminal of a power supply, said second load positively terminated at said center tap and negatively terminated at a most negative terminal of said power supply, said filter inductor coupled at one end to said center tap; (c) a small bypass capacitor, said bypass capacitor functioning as a reservoir for high-frequency, low-level transients at said power supply; and (d) an integrated circuit chip coupled to said filter inductor, said first load, said second load, and said center tap, said integrated circuit chip composed of a regenerative drive with dual embedded MOSFET switches in a half bridge topology and said bypass capacitor, said integrated circuit chip driving charge flow across said center tap.

Claim 24

A switchmode power control circuit for efficiently transferring charge between a first load and a second load of equivalent capacitance coupled in series, said switchmode power control circuit comprising: (a) a small filter inductor, said filter inductor storing energy during charge transfer; (b) a center tap, said first load negatively terminated at said center tap and positively terminated at a most positive terminal of a power supply, said second load positively terminated at said center tap and negatively terminated at a most negative terminal of said power supply, said filter inductor coupled at one end to said center tap; (c) a small bypass capacitor, said bypass capacitor functioning as a reservoir for high-frequency, low-level transients at said power supply; and (d) an integrated circuit chip coupled to said filter inductor, said first load, said second load, and said center tap, said integrated circuit chip composed of a regenerative drive with dual embedded MOSFET switches in a half bridge topology and said bypass capacitor, said integrated circuit chip driving charge flow across said center tap.

Claim 25

A switchmode power control circuit for efficiently transferring charge between a first load and a second load of equivalent capacitance coupled in series, said switchmode power control circuit comprising: (a) a small filter inductor, said filter inductor storing energy during charge transfer; (b) a center tap, said first load negatively terminated at said center tap and positively terminated at a most positive terminal of a power supply, said second load positively terminated at said center tap and negatively terminated at a most negative terminal of said power supply, said filter inductor coupled at one end to said center tap; (c) a small bypass capacitor, said bypass capacitor functioning as a reservoir for high-frequency, low-level transients at said power supply; and (d) an integrated circuit chip coupled to said filter capacitor, said first load, said second load, and said center tap, said integrated circuit chip composed of a regenerative drive with embedded signal processing and control circuit, dual embedded MOSFET switches in a half bridge topology and said bypass capacitor, and said integrated circuit chip driving charge flow across said center tap.

Claim 26

A switchmode power control circuit for efficiently transferring charge between a first load and a second load of equivalent capacitance coupled in series, said switchmode power control circuit comprising: (a) a small filter inductor, said filter inductor storing energy during charge transfer; (b) a center tap, said first load negatively terminated at said center tap and positively terminated at a most positive terminal of a power supply, said second load positively terminated at said center tap and negatively terminated at a most negative terminal of said power supply, said filter inductor coupled at one end to said center tap; (c) a small bypass capacitor, said bypass capacitor functioning as a reservoir for high-frequency, low-level transients at said power supply; and (d) an integrated circuit chip coupled to said filter capacitor, said first load, said second load, and said center tap, said integrated circuit chip composed of a regenerative drive with embedded signal processing and control circuit, dual embedded MOSFET switches in a half bridge topology and said bypass capacitor, and said integrated circuit chip driving charge flow across said center tap.