Lighting system with fluorescent and incandescent lamps

Details Lighting system with fluorescent and incandescent lamps Lighting system with fluorescent and incandescent lamps

1992-06-26

1994-09-06

Gensler, Paul

Electric lamp and discharge devices: systems

Condenser in the supply circuit

Inductance in the condenser circuit

315246, 315179, 315254, H05B 3700

Patent

active

053451490

ABSTRACT:
A lighting system using a 120 volt AC power source and including within a single enclosure a low wattage fluorescent lamp and a low wattage incandescent lamp. The fluorescent lamp provides an efficient light source operating at a low voltage and low wattage, but providing a relatively bright light. The incandescent lamp may be used to provide a more traditional night light having a lower light output than that which is produced by the flourescent lamp. Either the fluorescent lamp or the incandescent lamp is selected by a switch. To obtain the low voltage required by the incandescent lamp, a resistor is placed in parallel with a capacitor to provide a small voltage drop, e.g., from 120 volts to 115 volts. In this configuration, due to the charging and discharging of the capacitor as the current alternates and discharges through the resistance of the incandescent lamp, a relatively low voltage and current pass through the incandescent lamp.

REFERENCES:
patent: 4350929 (1982-09-01), Katoogi
patent: 4399492 (1983-08-01), Kolesar

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