Fluorescent lamp with reduced electromagnetic interference

Details Fluorescent lamp with reduced electromagnetic interference Fluorescent lamp with reduced electromagnetic interference

1981-06-25

1983-10-11

Chatmon, Jr., Saxfield

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Discharge device load

307 89, 307 91, 313493, 313161, 315 8, 315 85, 315 70, 315278, H01J 744, H01J 1734, H01J 1978, H01J 2996

Patent

active

044095210

ABSTRACT:
The electromagnetic interference produced by arc discharge lamps and other devices operating at frequencies in excess of 15,000 Hz is reduced by providing a current path external to the envelope containing the discharge, the current flow in the path being oriented so as to produce a magnetic field generally in opposition to the magnetic field generated by the current in the arc discharge. The present invention is particularly applicable to circular fluorescent lamps with a centrally disposed ballast operating at relatively high frequencies.

REFERENCES:
patent: 2930920 (1960-03-01), Bird
patent: 3079521 (1963-02-01), Clark
patent: 4245179 (1981-01-01), Buhrer
patent: 4254363 (1981-03-01), Walsh

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