Johnson Research Development Company, Inc.

Yong Su

Lonnie G Johnson

A rechargeable power supply overcharge protection circuit is provided with shunt circuits that shunt current about a battery or battery cell (15, 16 and 17) of a string of battery cells when it is charged to a maximum charge limit. The shunt circuit includes shunt regulators (20) connected across each battery cell.

Rechargeable battery power supply overcharge protection circuit

A magnetic propulsion toy system is provided having a track (11), a boost station (12) and a car (14) made of magnetic material. The boost station has control circuit (18) with a battery (19), a wire coil (21), a capacitor (22), a manual triggering switch (24), an automatic triggering switch (27) and a manual delay triggering switch (29). An infrared emitter/detector (28) is coupled to the automatic triggering switch and manual delay triggering switch.

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Atlanta, GA, United States of America

Yong Su