Rechargeable table lighting system with protection from short ci

Details Rechargeable table lighting system with protection from short ci Rechargeable table lighting system with protection from short ci

1994-09-23

1996-12-24

Wong, Peter S.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 2, 320 48, 361 82, 362183, F21L 700, H02J 700

Patent

active

055876463

ABSTRACT:
Rechargeable battery packs for table lighting each contain a 3-element phono jack in their base for engaging a battery recharger phono plug the insertion of which opens the lamp circuit. If a phono plug has short circuited elements, its insertion into a battery pack causes a short circuit of the battery resulting in damage or destruction of the pack. This is prevented by inserting a diode in the circuit to permit current flow in one direction. Also disclosed is a fault locator for locating a shorted plug of many plugs on a charger board.

REFERENCES:
patent: 4691157 (1987-09-01), McDermott
patent: 4764853 (1988-08-01), Thomas et al.
patent: 4991069 (1991-02-01), Tiller
patent: 5482793 (1996-01-01), Burnes et al.
Horenstein, Mark, N., "Microelectronic Circuit and Devices", pp. 129-130.

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