In what home appliances I can find a 40V (or so) DC motor?
I have a central heating system that was installed in this house in 2006. Tonight, while I was taking a nap my wife said that she suddenly heard a loud whine/whistle sound that slowly lowered in ...
My garage door opener is on its last legs, should I replace it or try to fix it? Symptoms: The door does not initially move when the button is pushed, but after giving the door a boost it opens. ...