This paper proposes a circuit analysis and system modeling of an ozone generator using a phase-shifted pulsewidth modulation full-bridge inverter connected to two electrodes via a step-up transformer. The circuit operation of the inverter is fully described. Approximate models of the high-frequency transformer and the ozone-generating tube are given. Model parameter values are obtained from […]

This paper discusses the self-tuning capabilities of an analog current-mode controller for switch-mode power supplies.The proposed tuning techniques are based on the insertion of nonlinear (NL) blocks in the analog control loop and the generation of a controlled oscillation on the output voltage, in order to measure the closed-loop properties like gain margin, phase margin,and […]

Asingle-inductor dual-output (SIDO) buck converter has recently found applications in hand-held battery-powered electronic devices. The circuit operation and the functional interdependencies among basic converter parameters such as dc voltage gains,transistor duty cycles, and load current levels are much more complicated than those of the single-output counterpart. In this paper, arigorous analysis was conducted to develop […]

This paper deals with the design and performance simulation of high power factor (HPF), low crest factor electronicballast for a compact fluorescent lamp (CFL). The proposed electronic ballast uses a Cuk buck-boost ac-dc converter incontinuous conduction mode (CCM) as a power factor preregulator. In this electronic ballast topology, a self oscillatinghalf bridge series resonant parallel […]