On 08/01/2020 17:05, Dave Plowman (News) wrote:
In article ,
Fredxx wrote:
cheap chinese motors used in e.g. car window winders are deliberately
pants to that they can be stalled without burning out wires or fuses.

Car window winders are an especially bad example. They use load sensors
to ensure nothing is trapped, such as a child's arm, in the window.

Interesting. Never come across that. How do they work? And why fit a motor
so powerful it could do an arm damage? Most are easily stopped by hand.

I thought that nowadays you have to hold the button down to close the
power window. Only opening goes all the way down with one press.

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Max Demian