Likewise, the MPPT varies the ratio between the voltage and current delivered to the battery, in order to deliver maximum power. If there is excess voltage available from the PV, then it converts that to additional current to the battery. Furthermore, it is like an automatic transmission.
On the Supreme Court of the United States, Associate Justices Potter Stewart and Anthony Kennedy have been described as swing votes between the two factions of the court. In the United Kingdom, the  Essex man ,  Worcester woman  and  Holby City woman  are examples of personifications of swing voters.
The court's first female justice, Sandra Day O'Connor, was nominated by a Republican president in 1981 and was regarded as a conservative pick. The second female justice, Ruth Bader Ginsburg, was the choice of a Democratic president in 1993 and widely viewed as liberal. The two women served together until O'Connor's retirement in 2005. Ginsburg remained as the lone female justice on the Supreme Court until Sonia Sotomayor took the bench in the fall of 2009.