Fast lamp current limiting apparatus and method

Details Fast lamp current limiting apparatus and method Fast lamp current limiting apparatus and method

1990-05-04

1993-03-02

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

361 87, 361101, H05B 3902

Patent

active

051915014

ABSTRACT:
A sensitive and fast low voltage lamp system controller to provide safe operation of "bare wire" systems that are particularly attractive for use in exhibition and tradeshow booth lighting. The high sensitivity is achieved by emphasizing high frequency noise present during shorts and by proportionately limiting the instantaneous current that tracks the line AC voltage waveform; fast response is provided by a power FET coupled to a bridge rectifier in series with the load and both then in series with a protection relay.

REFERENCES:
patent: 4414598 (1983-11-01), Nowell
patent: 4417183 (1983-11-01), Popard et al.
patent: 4466071 (1984-08-01), Russell, Jr.
patent: 4634932 (1987-01-01), Nilssen
patent: 4849683 (1989-07-01), Flolio
patent: 4853820 (1989-08-01), Ham, Jr. et al.

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