FIG. 1A illustrates a conventional, prior art H-bridge inverter circuit 110 for transferring power from a DC supply 120 to an AC load 115. The H-bridge inverter circuit 110 includes four switches 111-114. During the operation of the H-bridge inverter 110, the switches 111-114 turn on and off in pairs to deliver an AC current to the AC load 115. For example, at one instance, switches 111 and 114 are turned on, while the switches 112 and 113 are turned off. Current flows from DC power supply 120 through switch 111, to the AC load 115, through the switch 114, and to a ground voltage or a negative supply voltage. At another instance, switches 111 and 114 are turned off, switches 112 and 113 are turned on. During this instance, the current flows from the DC supply 120 through the switch 113, to the AC load 115, through the switch 112, and to the ground voltage or the negative supply voltage. By altering the direction of the current flow, the H-bridge inverter is configured to deliver an AC current from the DC supply 120 to the AC load 115.
FIG. 1B illustrates a conventional, prior art sync bridge circuit 130 for transferring power from an AC supply 135 to a DC load 140. The sync bridge circuit 130 includes four switches 131-134. The sync bridge circuit 130 receives an AC current from the AC supply 135, and the switches 131-134 of the sync bridge circuit 130 turn on and off in pairs to deliver a DC current to the DC load 140.