3 ms·
I once owned a Remington electric razor that just died for no reason one day. I decided to take it apart and see if there was anything obviously wrong with it.
by mark-r 12y ago
I once owned a Remington electric razor that just died for no reason one day. I decided to take it apart and see if there was anything obviously wrong with it. There was - the electrical contact with the motor was made by a piece of graphite, and it had worn down to nothing. At that moment I decided to switch to another brand on the hope that it did not practice planned obsolescence, and I've been happy ever since.
- lttlrck 12y agoI wouldn't consider the practice of using graphite brushes in DC motors as planned obsolescence. It's more like best tool for the job, with a limited lifetime by its very nature.
- Johnythree 12y agoYou've just discovered that Electric motors use brushes on their commutators? Welcome to the 20th century. Brushes are intended to be replaced, and many manufacturers supply spare brushes in the original packaging. In the 21st century however the traditional brushes have been replaced by electronic switching. see https://en.wikipedia.org/wiki/Brushless_DC_electric_motor https://en.wikipedia.org/wiki/Brushless_DC_electric_motor