Other

Joo-Dong Yu

Ashok Narayan Prabhu

Timothy Allen Pletcher

Ellen Schwartz Tormey

Attiganal Narayanaswamy Sreeram

Robert Amantea

Michael James Liberatore

Min-Sung Yang

Jae-Young Choi

Yun-Hwi Park

Sung-Dae Park

Je-Do Mun

In-Tae Kim

Jae-Hwan So

An exemplary power supply provides low power dissipation in standby mode by disabling the start-up circuit and by implementing variable frequency operation independent of the feedback signal. A standby mode detection circuit automatically implements the variable frequency operation, and an under voltage lockout signal implements the start-up circuit disable. Once the start time expires or when feedback control enables, the start-up circuit is disabled so that it dissipates negligible power. A voltage controlled oscillator responsive to the rectified DC line voltage provides for variable frequency operation in standby mode. The frequency output of the VCO is inversely proportional to the line voltage&mdash;as line voltage increases the switching frequency decreases, which decreases the output power.

Low power dissipation power supply and controller

High dielectric constant capacitors are made from a dielectric ink of lead-magnesium-niobate and lead oxide powders. Dielectric inks are made by mixing the dielectric powders with a suitable organic vehicle which can be used to coat one or more glass-based green tapes. Buried capacitors are made by coating an overlying and an underlying green tape with a conductor such as silver. Capacitors can also be made by adjusting the organic vehicle and forming a green tape from the dielectric powders. These dielectric green tapes each can be coated with a conductive layer and stacked, the conductive layers connected in parallel. The resultant multilayer capacitors have a very high dielectric constant, while eliminating the need for very large area capacitors, as compared to single layer capacitors.

High dielectric constant embedded capacitors

Growing community of inventors

Kyunngi-Do, South Korea

Joo-Dong Yu