Electrical light socket

Details Electrical light socket Electrical light socket

1999-08-23

2000-12-05

Philogene, Haissa

Electric lamp and discharge devices: systems

Plural series connected load devices

Christmas lights

315185R, 315323, 363146, H05B 3700

Patent

active

061571393

ABSTRACT:
A light socket is disclosed that has a built-in integrated circuit for rectifying the alternating current received from an electrical outlet and limiting the direct current produced. The light socket is specifically suited for low-current, low-voltage applications such as supplying DC to a string of ornamental lights. The integrated circuit has a diode with a modified cathode that acts as a fuse as it is rectifying the alternating current. The cathode is formed of a plurality of electrically parallel conductors. Excessive current blows out at least some of these conductors in the same way a conventional fuse blows. Various embodiments add other current-limiting elements, elements for producing full wave or near will wave rectification, and for opening the circuit when they detect extraneous currents.

REFERENCES:
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patent: 3968398 (1976-07-01), Lehmann et al.
patent: 4075614 (1978-02-01), White
patent: 4227228 (1980-10-01), Cheng
patent: 4675575 (1987-06-01), Smith et al.
patent: 5345147 (1994-09-01), Wu
patent: 5396221 (1995-03-01), Bridges
patent: 5777868 (1998-07-01), Gibboney, Jr.
patent: 5994845 (1999-11-01), Gibboney, Jr.

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