Joselito D Parayno

Title: Joselito D. Parayno and AC-DC Power Supply Innovation.

Introduction

Joselito D. Parayno is an inventor based in San Jose, California, whose work includes a patent for managing inrush current in AC-DC power supplies. His listed patent portfolio includes 1 patent, and he is associated with Apple Inc.

Latest Patents

Parayno’s patent, “Inrush Current Suppression for AC-DC Power Supplies,” describes a circuit designed to limit the surge of current that can occur when a power supply is switched on. A resistor connected in series with a bulk capacitor limits the initial inrush current, while a solid-state switching device can bypass the resistor after the capacitor is charged.

The patent also describes control circuitry that operates the switching device. Under high-load conditions, a relay can bypass the resistor after charging; under low-load conditions, the solid-state device can perform that function. This approach provides different bypass mechanisms according to operating conditions.

Career Highlights

The patent reflects Parayno’s contribution to power-supply design, particularly the control of startup current and the operation of AC-DC systems. The disclosed arrangement combines a current-limiting resistor, switching components, and control circuitry to address inrush current while supporting power conversion.

Collaborations

Parayno’s listed coworkers include Yantao Song and Abby Cherian. Their shared professional context connects the inventor with colleagues working in the same company environment.

Conclusion

Joselito D. Parayno’s patent documents a practical approach to suppressing inrush current in AC-DC power supplies, using controlled resistor bypassing to support reliable power-system operation.