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by Mirioron
2183 days ago
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The cheap machines before might've been less efficient, but they generally at least did the job adequately. That's not always the case when the power rating is limited. Consider that these rules apply to countries with very different economies. People in Bulgaria have an average income of $9,000 a year compared to $54,000 in Germany. They have access to the same vacuum cleaners and washing machines, but they can't afford the same ones. |
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Difference between primitive universal motor + Triac speed controller versus BLDC + controller one is max around $20 BOM. In return you get vastly better efficiency and quieter operation, but we cant have that in a low end product oh no, how would we upmarket the expensive ones?
Example modern product sold with realistic markup, $30 impact driver https://www.youtube.com/watch?v=AERn5japFs8