A 3 phase power supply is a big improvement over the single phase types most US hams use in their amps. Which of the following is
NOT usually associated with a 3 phase supply?
Less ripple/smaller filter cap
Smaller, more efficient transformers
Lower AC line currents
Better voltage regulation
Answer: Smaller, more efficient transformers are not usually a benefit of using 3 phase power, but the other items are, especially #1.
Bonus question
What is the ripple frequency of a full wave 60Hz 3 phase supply?
Answer: 360Hz
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