Abstract
The design considerations of high frequency two-stage electronic ballast for metal halide (MH) lamps are presented in this paper. To eliminate acoustic resonance, which is inevitable trouble for MH lamps operating in high frequency, the low frequency sinusoidal wave frequency modulation (FM) injected into half bridge LC resonant inverter makes the frequency and amplitude of lamp voltage and current fluctuating in specific range. A novel simple FM circuit is proposed based on PWM chip's characteristic. A 250 W prototype electronic ballast verifies the operation of MH lamp with free acoustic resonance. Experimental results show this approach is suitable for lamps from different manufactures.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
