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Old 03-05-2017, 05:32 PM   #1
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Default Discussion: "Cap-Drop" Approach Implements Offline Power Supply for Light Loads

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Akshay Mehta, Texas Instruments Electronic Design A transformerless ac-dc supply can provide dc power for light loads using a capacitor's reactions as a current-limiting element. Low-power applications such as e-meters (electricity or energy meters) often require a simple ac line-powered supply where a 3.3-V rail powers a microcontroller and charges a lithium-ion battery to 4.2 V.
More: "Cap-Drop" Approach Implements Offline Power Supply for Light Loads
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Old 03-05-2017, 05:32 PM   #2
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The most important advantage of these schemes is their size - Yes are not. It is used all all the "100 years" only and that the dimensions of all parts without exception are reduced. The quenching capacitor - became cheaper and 100_ни times smaller in size.
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