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by dreamcompiler
1763 days ago
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But that intermediate AC is square (not sinusoidal) which means the transistors spend almost no time in the linear range, which means they generate very little heat. And the frequency is much higher than 60Hz too. It's a very different kind of AC, with much more controllable and more efficient electronics. Transformers still have their place but they're still basically big dumb (uncontrollable) chunks of copper and iron. |
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This is incredibly important to note. Buck-boost converters enjoy efficiencies beyond 90% in even the most pedestrian implementations. This makes their efficiency directly competitive with transformer-based designs (95-99%).