Method and apparatus for single-ended conversion of DC to AC...

Details Method and apparatus for single-ended conversion of DC to AC... Method and apparatus for single-ended conversion of DC to AC...

2007-01-09

2007-01-09

Tran, Thuy V. (Department: 2821)

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

C315S219000, C315S307000

Reexamination Certificate

active

10850351

ABSTRACT:
The present disclosure introduces a simple method and apparatus for converting DC power to AC power, and, specifically, to single-ended inverter circuits for driving discharge lamps such as a Cold Cathode Fluorescent Lamp (CCFL) or an External Electrode Fluorescent Lamp (EEFL). Among other advantages, these circuits offer nearly symmetrical voltage waveform to drive discharge lamps when the duty cycle is close to 50%. They also eliminate the high current and high voltage resonant capacitor on the primary side, and reduce the voltage rating of a primary switch to twice the input voltage without the need for snubber circuits. The recommended inverters can be used to efficiently drive discharge lamps at low cost, particularly for applications with a narrow input voltage range. The lamp current can be regulated through the duty cycle modulation of the main switch.

REFERENCES:
patent: 4257088 (1981-03-01), Nilssen
patent: RE32155 (1986-05-01), Nilssen
patent: 5063331 (1991-11-01), Nostwick
patent: 5677602 (1997-10-01), Paul et al.
patent: 5907223 (1999-05-01), Gu et al.
patent: 6031342 (2000-02-01), Ribarich et al.
patent: 6072710 (2000-06-01), Chang

Affiliated with

Also associated with

Rating

Method and apparatus for single-ended conversion of DC to AC... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for single-ended conversion of DC to AC..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for single-ended conversion of DC to AC... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3811460