Perpetual Power presents the PT Series Online UPS-a high-performance, fully digital uninterruptible power supply featuring advanced DSP (Digital Signal Processing) control technology. The system utilizes an online double-conversion topology to ensure maximum power reliability. Its DC/AC conversion is based on SPWM (Sinusoidal Pulse Width Modulation) technology, utilizing high-efficiency IGBT power modules and an output isolation transformer for enhanced performance and protection.