Make sure you take a look at a new feature on the site, regarding switching-converter topologies for power converters - Flyback transformer enables high power-factor and converter efficiency
Written by one Cecil Deisch, of Tellabs Operations, the article begins:
Several switching-converter topologies exist for power converters that operate from the ac mains and must maintain a power factor of 0.9 or better.
One topology is a boost converter with a control circuit that measures the switch current and adjusts the switching duty cycle so that the input current tracks the rectified input-ac voltage.
However, the output voltage is high-approximately 200V dc in the United States and more than 400V dc in Europe-and has no fixed ground reference. Because of these drawbacks, a second converter, typically a flyback transformer, provides isolation from this high dc voltage, allows a safety ground reference, and provides a regulated lower output voltage of 5 to 25V dc.
Read the full article - Flyback transformer enables high power-factor and converter efficiency
See also: the Electronics Weekly focus on transformers, presenting a roundup of content related to transformers and the possible variations available for applications.
Subscribe to this blog's RSS feed