Posts Tagged ‘ transients ’

Back to Basics: Powering Dynamic Loads

August 21, 2014
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Back to Basics: Powering Dynamic Loads

Modern electronic loads can demand rapid changes in the supply current. An RF power amplifier, for example, may present a steady-state load of 10% of the rated input power, but this can increase to nearly 100% almost instantly during a transient. Other loads capable of imposing similarly large transients include RF transmitters, test systems, displays, designs with low voltage ASICs and laser diode transmitters. A DC-DC converter can take a few hundred microseconds to respond to a large load step, while a power amplifier may require a recovery time below 100 microseconds to avoid...

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Back to Basics: Why do we need active surge suppression?

December 7, 2013
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Back to Basics: Why do we need active surge suppression?

It’s well understood that unexpected electrical disturbances can cause data loss or even permanent damage to any unprotected electronic equipment in their path. Active as well as passive suppression is essential to provide comprehensive protection from all such events. This post shows why this is so, and how active suppression works to fulfil its role. Electrical events threaten electronic equipment by placing excessive electrical energy onto its input power rails in the form of a transient, a surge, or possibly both. A transient is typified as a fast-rising voltage spike of high magnitude –...

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