Echostar Technologies Corporation

Sam Chaisitti

Kirk Lenzie

Vincent Dung Nguyen

Casey Gold

Henry Gregg Martch

Paul Langer

Jose Palathra Thomas

Priyanka Rajan Rele

Jorge Enrique Lugo Nevarez

A method of supplying direct-current (DC) power is presented herein. In the method, a first electrical signal and a second electrical signal are received. The first electrical signal alternates between a high voltage and a low voltage according to a constant duty cycle. The second electrical signal is synchronized with the first electrical signal. The first electrical signal is gated using the second electrical signal to produce a gated electrical signal with a duty cycle less than the duty cycle of the first electrical signal. The gated electrical signal is filtered to generate a DC output voltage. A difference between the generated DC output voltage and a reference DC voltage is determined. The duty cycle of the gated electrical signal is controlled by controlling the gating of the first electrical signal based on the difference.

Apparatus, systems and methods for power supply employing single-stage forward voltage conversion

Various systems, methods and apparatus are described for detecting an excessive or faulty ground current in a conductive wire or electronic device. A ground current detector is coupled to a known earth ground to determine whether other ground lines are carrying excessive, faulty and/or leaking currents. If these types of unsafe conditions are detected, then a user can take appropriate action to locate and correct these problems.

Apparatus, system and methods for ground current detection

Methods for installing an antenna reception system

Various embodiments of apparatus and systems are provided for electrically isolating two devices while transferring power and RF signals therebetween. An electrical isolation apparatus includes an isolation transformer that operates to transfer electrical power between first and second devices. The electrical isolation apparatus also includes a decoupling device that transfers radio frequency (RF) signals between the first and second devices. The isolation transformer and the opto-isolator cooperatively operate to electrically isolate the first device from the second device.

Apparatus and systems for electrically isolating a receiver from an antenna

Apparatus and systems for electrically isolating and transmitting RF signals between two devices

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Westminster, CO, United States of America

Sam Chaisitti