Patent ID: 8493036

Claim:
A device comprising: a power source with a positive lead and a negative lead; charge storage with a first capacitor component and a second capacitor component coupled in series, and a center tap between the first capacitor component and the second capacitor component; a first charge path including a first positive switch and a first negative switch and disposed between the positive lead and the negative lead, the first charge path traversing the first capacitor component and the center tap but not traversing the second capacitor component, the first capacitor component and the center tap disposed between the first positive switch and the first negative switch, the first positive switch and the first negative switch being dedicated to the first charge path; and a second charge path including a second positive switch and a second negative switch and disposed between the positive lead and the negative lead, the second charge path traversing the second capacitor component and the center tap but not traversing the first capacitor component, the second capacitor component and the center tap disposed between the second positive switch and the second negative switch, the second positive switch and the second negative switch being dedicated to the second charge path, each of the first and second charge paths being controllable to allow charge current to flow from the power source to one or substantially simultaneously to both of the first and second capacitor components.