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Hold-Up Time Extension

Posted on 23-Mar-2016 14:13:00

This circuit proposes a method to extend the hold-up time of a Switch Mode Power Supply (SMPS), by adding capacitors in parallel to the internal bulk capacitor.

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Tags: Power Supply Topologies

Installation of Open Frame AC/DC Power Supplies

Posted on 25-Jan-2016 13:59:42

AC/DC power supplies are commonly supplied in what is known by the industry as an open frame format. Open frame generally describes a product which is a PCB only construction, component power supply to be installed into an end application which provides the enclosure for the entire product.

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Tags: AC-DC Power Supplies, Power Supply Topologies

Green mode LLC half bridge converters

Posted on 29-Sep-2015 14:00:00

Power supplies marketed under the “Green” label are designed to maximise efficiency across the load range (average active mode efficiency) and minimise power consumed at no load. Active mode efficiency is the average of four measurements made at 25, 50, 75 & 100% of full load. The EU Code of Conduct also introduces a minimum efficiency at 10% load to cater for applications where the power supply spends extended periods at light load.

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Tags: Green Power, AC-DC Power Supplies, Power Supply Topologies

Green mode fly-back converters

Posted on 01-Apr-2015 16:35:00

Many power supply products are marketed under the “Green Power” label meaning that they are designed to maximise efficiency across the load range (known as average active mode efficiency) and minimise power consumed at no load. Active mode efficiency is the average of four measurements made at 25, 50, 75 & 100% of full load.

There are multiple pieces of legislation applicable to external power supplies (EPS) including the ErP directive (Energy related Products), CEC (California Energy Commission), EISA (Energy Independence & security Act), NRCan (Natural resources Canada). Many power supply makers are also marketing component power supplies with similar specifications designed to enable users to meet green criteria for end applications.

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Tags: Green Power, AC-DC Power Supplies, Power Supply Topologies