Abstract: A lighting apparatus includes one or more first type LED modules, one or more second type LED modules and a driver circuit. The first type LED modules for emitting a first light of a first color temperature. The second type LED modules for emitting a second light of a second light temperature. The first type LED modules have a first spreading light angle and the second type LED modules have a second spreading light angle. The first light spreading angle is different from the second light spreading angle. The driver circuit provides a first working mode and a second working mode respectively corresponding to a first mixed light spreading pattern and a second mixed light spreading pattern by selectively turning on the first type LED modules and the second type LED modules.

Abstract: A lighting apparatus includes a surge voltage protector, a first rectifier, a first DC-DC converter, a first DC filter, a first constant current source, a second rectifier, a second DC-DC converter, a second DC filter, a second constant current source, a first PWM generator, a second PWM generator, a dimmer controller, a first light source and a second light source. The surge voltage protector is coupled to an external power for relaying an AC power. When there is a surge voltage is detected, the surge voltage protector disable routing the AC power. There are two or more paths of power circuits each generating a limited power. These power circuits are placed in the same container to simplify the overall design.

Abstract: A lighting apparatus includes a surge voltage protector, a first rectifier, a first DC-DC converter, a first DC filter, a first constant current source, a second rectifier, a second DC-DC converter, a second DC filter, a second constant current source, a first PWM generator, a second PWM generator, a dimmer controller, a first light source and a second light source. The surge voltage protector is coupled to an external power for relaying an AC power. When there is a surge voltage is detected, the surge voltage protector disable routing the AC power. There are two or more paths of power circuits each generating a limited power. These power circuits are placed in the same container to simplify the overall design.