Automatic headlamp dimmer

Automatic headlamp dimmer having improved signal discrimination

Ceiling fan with a light-sensitive circuit

Decorative lamp

Device for preventing a lamp from igniting a cover such as a cur

Electronic ballast with built-in times power saver and photoelec

Electronic lamp control apparatus

Electronic slave flash delay device

Emergency lighting device

Energy conserving electrical power control circuit

Excess light turn-off circuit

Fluorescent light and motion detector with quick plug release an

Illumination device

Incandescent light bulb life extending apparatus

Intelligent wall switch

Lamp control circuit using heater/thermistor time delay

Lamp control responsive to rapid increases in ambient light

Lamp with integral automatic light control circuit

LED driving circuitry with variable load to control output light

Light relay with adjustable core and contact gap