Abstract: A lighting apparatus includes a rectifier, a loading module and a current supplemental module. The rectifier is connected to an output of the AC power for receiving an AC signal. The rectifier converts the AC signal to a positive wave signal. The loading module is disposed at an output of the rectifier. The loading module includes multiple loading units connected in series. Output of each loading unit is connected to a current limit module. Each current limit module has a voltage conductive threshold and a working cycle dispatched to each current limit module according to the positive wave signal. The current supplemental module is connected to an output of the rectifier and an input of the loading module. The current supplemental module charges the current limit module during the working cycle and outputs current to the loading module when the positive wave signal is not sufficient to drive the loading module.

Abstract: A lighting apparatus includes a rectifier, a loading module, a constant current switch module and a current supplemental module. The rectifier is connected to an output of the AC power for receiving an AC signal to convert the AC signal to a positive wave signal. The loading module includes multiple loading units. The loading module is disposed on the output of the rectifier. The constant current switch module is connected to output of each loading unit and to control the working cycle of each loading unit so as to ensure a total passing current of the loading module is opposite in phase to the positive wave signal to keep output power constant. The current supplemental module supplies output current to the loading module when the positive wave signal is in sufficient to drive the loading module.

Abstract: A lighting apparatus includes a light source, a driver circuit, a high side control module and a low side control module. The light source includes a LED module. The driver circuit includes a high side circuit and a low side circuit for generating a driving current to the LED module. The high side control module for controls the high side circuit. The high side control module includes a voltage stabilizer and a current trigger. The voltage stabilizer is placed on a voltage input of a high side. The current trigger is connected to an output of the voltage stabilizer. The low side control module controls the low side circuit. The low side control module includes a buck converter, a constant current trigger, and a low side constant current source. The buck converter is connected to a second input of the current trigger.

Abstract: A lighting apparatus includes a light source, a driver circuit, a high side control module and a low side control module. The light source includes a LED module. The driver circuit includes a high side circuit and a low side circuit for generating a driving current to the LED module. The high side control module for controls the high side circuit. The high side control module includes a voltage stabilizer and a current trigger. The voltage stabilizer is placed on a voltage input of a high side. The current trigger is connected to an output of the voltage stabilizer. The low side control module controls the low side circuit. The low side control module includes a buck converter, a constant current trigger, and a low side constant current source. The buck converter is connected to a second input of the current trigger.

Abstract: A lighting apparatus includes a rectifier, a loading module and a current supplemental module. The rectifier is connected to an output of the AC power for receiving an AC signal. The rectifier converts the AC signal to a positive wave signal. The loading module is disposed at an output of the rectifier. The loading module includes multiple loading units connected in series. Output of each loading unit is connected to a current limit module. Each current limit module has a voltage conductive threshold and a working cycle dispatched to each current limit module according to the positive wave signal. The current supplemental module is connected to an output of the rectifier and an input of the loading module. The current supplemental module charges the current limit module during the working cycle and outputs current to the loading module when the positive wave signal is not sufficient to drive the loading module.

Abstract: A lighting apparatus includes a rectifier, a loading module, a constant current switch module and a current supplemental module. The rectifier is connected to an output of the AC power for receiving an AC signal to convert the AC signal to a positive wave signal. The loading module includes multiple loading units. The loading module is disposed on the output of the rectifier. The constant current switch module is connected to output of each loading unit and to control the working cycle of each loading unit so as to ensure a total passing current of the loading module is opposite in phase to the positive wave signal to keep output power constant. The current supplemental module supplies output current to the loading module when the positive wave signal is in sufficient to drive the loading module.