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A battery charger, recharger, or simply charger, [1] [2] is a device that stores energy in an electric battery by running current through it. The charging protocol—how much voltage and current, for how long and what to do when charging is complete—depends on the size and type of the battery being charged.
[9] [10] It maintains a list of active local currencies in the United States. [11] In 2004 it held the Local Currencies in the 21st Century conference which as reported by the Utne Reader. [12] In September 2013 Alice Maggio, the Schumacher Center's Local Currency Program Director, was interviewed for PBS's News Hour program. [13]
In this mode the charger holds a steady voltage slightly above that of a full battery, in order to push current into the cells. As the battery fills, its internal voltage rises towards the fixed voltage being supplied to it, and the rate of current flow slows. Eventually the charger will turn off when the current drops below a pre-set threshold ...
An 8-plate 160 V 450 mA Federal brand selenium rectifier. A selenium rectifier is a type of metal rectifier, invented in 1933. [1] They were used in power supplies for electronic equipment and in high-current battery-charger applications until they were superseded by silicon diode rectifiers in the late 1960s.
Trickle charging is the process of charging a fully charged battery at a rate equal to its self-discharge rate, enabling the battery to remain at its fully charged level. This state occurs almost exclusively when the battery is not loaded, as trickle charging will not keep a battery charged if current is being drawn by a load.
Schumacher moved back to England prior to the outbreak of World War II.For a period during the war, he was interned on an isolated English farm as an "enemy alien". In these years, Schumacher captured the attention of John Maynard Keynes with a paper entitled "Multilateral Clearing" [3] that he had written between sessions working in the fields of the internment camp.