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U.S. Department of Energy
Office of Scientific and Technical Information

Zener-diode-controlled battery charger

Patent ·
OSTI ID:6842799
A battery-charging system comprises a source of direct current connectable across the terminals of an electrochemical battery, a circuit for connecting the source with the battery, a relay coil, and a Zener-type breakdown device. The circuit includes a switch in series with the battery and the source, the switch having a first position wherein the source is connected with the battery and a second position wherein the source is disconnected from it. The switch is operated by the relay coil. The breakdown device, which becomes conducting upon attainment of a predetermined battery voltage, is connected in series with the coil and the switch for disconnecting the device from the battery. Upon breakdown the coil is energized and the switch is moved from its first position to its second position.
Assignee:
Yardney International Corp.
Patent Number(s):
US 3205422
OSTI ID:
6842799
Country of Publication:
United States
Language:
English