Alcatel Lucent

Marcos Vivas

Rami Labib

Simon P Whittam

An over-current input conditioning limiter is disclosed for remote equipment. The over-current input conditioning limiter includes a current sensing apparatus, a semiconductor switch, and a programmable controller for controlling the peak current drawn from a pair of supply lines. The over-current input conditioning limiter is particularly useful for overcoming voltage collapse and over-current shutdowns of network power supplies feeding remote apparatus known in the art.

High-voltage step-charge control for use in network-powered applications

A method and an apparatus to measure current in power switching supplies are disclosed for simplification of in-circuit measurement. The method and apparatus to measure current include a sensing capacitor, which in series with a resistor, is placed across the output inductor of the power supply in order to utilize the parasitic resistance of the inductor, in conjunction with a measurement controller which performs initial calibration and temperature compensation. Initial and secondary measurements are performed using an adjustable current sink in order to eliminate thermal effects. The method and apparatus to measure current in power switching supplies are particularly useful for overcoming invasive measurement techniques for measuring current known in the art.

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Kanata, Canada

Marcos Vivas