Battery charger with liquid crystal charge current indicator
First Claim
Patent Images
1. A battery charger comprising (a) a charger housing;
- (b) a circuit means in said housing for connection to a power source and for supplying charge current to a cell connected in said circuit means, said circuit means comprising a heat-generating circuit element; and
(c) a liquid crystal indicator for indicating the flow of current through said element responsive to the change in temperature of said element, said indicator fixed in said housing in a position adjacent said element.
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Abstract
A charging system for alternatively charging cells having different physical sizes and/or electrical characteristics comprising a charge current source, a plurality of cellholder modules and interconnection means on said charger and said modules for selective alternative connection of each of said modules to the charger. Each module includes a liquid crystal indicator for indicating when cells in the module are being charged.
42 Citations
9 Claims
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1. A battery charger comprising (a) a charger housing;
- (b) a circuit means in said housing for connection to a power source and for supplying charge current to a cell connected in said circuit means, said circuit means comprising a heat-generating circuit element; and
(c) a liquid crystal indicator for indicating the flow of current through said element responsive to the change in temperature of said element, said indicator fixed in said housing in a position adjacent said element. - View Dependent Claims (2, 3)
- (b) a circuit means in said housing for connection to a power source and for supplying charge current to a cell connected in said circuit means, said circuit means comprising a heat-generating circuit element; and
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4. A battery charger comprising:
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a. a source of charge current comprising (1) a housing, (2) a transformer having a secondary winding disposed in said housing, and (3) first, second and third source terminals, said first and third source terminals connected to said winding, said second source terminal connected to said winding at a point intermediate of the connections of said first and third source terminals to said winding; b. a first cellholder module comprising (1) first, second and third module terminals for selective connection to said first, second and third source terminals, respectively;
(2) compartment means for holding a plurality of cells for charging; and
(3) first circuit means connecting at least one cell in series between said first and second module terminals and between said second and third module terminals, respectively, said circuit means comprising a first heat-generating circuit element; andc. a first liquid crystal indicator for indicating the flow of charge current through said element responsive to the change in temperature of said element, said indicator fixed in said module in a position adjacent said element. - View Dependent Claims (5, 6, 7, 8, 9)
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Specification