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Altera_Forum
Honored Contributor
15 years agoIf you examine the DE2 schematic, you'll notice that the 3.3V switcher LM2676 has a specified minimum inpout voltage of 8V. There's no specification about reduced performanve with lower input voltage. In addition a voltage drop of 0.6..0.8 will be caused by the schottky bridge rectifier.