Tatung Company

Tatung University

Hung-Ching Lu

Te-Lung Shih

The invention provides a single-stage electronic ballast for a fluorescent lamp, comprising a boost circuit and a load unit. The boost circuit includes a first inductor, a first capacitor, a first diode and at least a switch, wherein the positive terminal of the first diode is connected to the first inductor, and the negative terminal of the first diode is connected to the at least a switch. The load unit includes at least a fluorescent lamp, two terminals of the first capacitor are respectively connected to the at least a load unit, and the at least a switch is connected to the load unit for controlling its turning-on and turning-off, wherein the boost circuit and the load unit share the at least a switch.

Single-stage electronic ballast for a fluorescent lamp

The invention provides a circuit system for driving a high-intensity discharging lamp, comprising a boosting circuit, an ignition coil circuit and a clamp circuit. The boosting circuit includes a first transformer and a first switch, in which the primary of the first transformer receives an input power, the secondary of the first transformer produces a boosting DC voltage, and the first switch is connected to the first transformer to control turning-on and turning-off of the first transformer. The ignition coil circuit is connected to the boosting circuit for converting the boosting DC voltage into a switching AC voltage to drive a load. The clamp circuit is connected to the boosting circuit and the ignition coil circuit for directing energy, reflected from the secondary of the first transformer to the primary of the first transformer, to the secondary of the first transformer as the first switch is turned off.

Growing community of inventors

Taipei, Taiwan

Hung-Ching Lu