Energy-efficient incandescent lamp with improved filament charac

Details Energy-efficient incandescent lamp with improved filament charac Energy-efficient incandescent lamp with improved filament charac

1982-03-19

1984-07-24

Chatmon, Saxfield

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Discharge device load

313112, 315 58, 315200R, H01J 744, H01J 1734, H01J 1978, H01J 2996

Patent

active

044619731

ABSTRACT:
An energy-efficient incandescent lamp has a transparent heat mirror placed on the envelope. A diode is connected in series with the filament. This reduces the voltage across the filament and increases the current passing through it, so that shorter and greater diameter filament wire is used. This makes a stronger filament than is used in a conventional incandescent lamp with no diode, and makes the filament more resistant to displacement by mechanical forces.

REFERENCES:
patent: 2859369 (1958-11-01), Williams et al.
patent: 3062986 (1962-11-01), Fritz et al.
patent: 3818263 (1974-06-01), Belko
patent: 3823339 (1974-07-01), Boreman et al.
patent: 3869631 (1975-03-01), Anderson et al.
patent: 4160929 (1979-07-01), Thorington et al.

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