首页>
外国专利>
Electronic ballast capable of self-protection at natural or premature end of life of fluorescent light tube
Electronic ballast capable of self-protection at natural or premature end of life of fluorescent light tube
展开▼
机译:能够在荧光灯管的自然寿命或过早寿命中进行自我保护的电子镇流器
展开▼
页面导航
摘要
著录项
相似文献
摘要
The present invention is to provide an electronic ballast connected in parallel to two filaments of a fluorescent light tube, which comprises a controller for generating two output signals, two power switches being switched according to the output signals, a resonant circuit oscillating according to switching of the power switches and thereby causing a resonant capacitor thereof to generate a voltage, a voltage sensor connected in series to the resonant capacitor and connected in parallel between the two filaments so as to sense an AC voltage proportional to a voltage across the fluorescent light tube, and a regulator connected separately to the voltage sensor and controller so as to convert the AC voltage into a DC voltage and deliver the DC voltage to the controller. Upon determining that the DC voltage exceeds a preset voltage level, the controller generates an interruption control signal for immediately stopping operation of the controller.
展开▼