How does a garage door opener work?
Pressing the remote control on your car visor to open the garage door can be taken for granted. The technology involved is actually fascinating when you take into account all that occurs. Also if you realize that you may be able to open other garage doors on your block with your remote, you may be inviting unwanted visitors to your home. The Basic Mechanics of Garage Door Openers All garage door openers operate on the same mechanical principle. An electric motor is energized through a dual set of motor contactors. These motor contactors turn the motor on in a clockwise direction to raise the door. Then it goes in a counterclockwise direction to close the door. The “off” sequence is performed by small limit switches that are positioned or tuned to accurately open and close the door. A long bicycle type chain then translates the rotational motion of the motor to raise or lower the door. The limit switches are generally placed along the upper edge of the chain track . Safety Features Some
