Why would I prefer to use a buck converter over a voltage divider, and vice-versa?
I know that voltage dividers are less complex and cheaper than buck converters, given that voltage dividers are simply two resistors.
What are other pros and cons of using a buck converter?
Answer
It's generally down to efficiency. For very small currents, a voltage divider can use very little power (by using high value resistors_, while a buck converter will use power just powering itself.
But at larger currents, a voltage divider can waste a lot of power as heat in the resistors. A buck converter might be ~80% efficient under load.
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