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Power door locks (also known as electric door locks or central locking) allow the driver or front passenger to simultaneously lock or unlock all the doors of an automobile or truck, by pressing a button or flipping a switch. Power door locks were introduced on the luxury Scripps-Booth in 1914, but were not common on luxury cars until Packard ...
Since electromagnetic locks do not interact with levers or door knobs on a door, typically a separate release button that cuts the lock power supply is mounted near the door. This button usually has a timer that, once the button is pressed, keeps the lock unlocked for either 15 or 30 seconds in accordance with NFPA fire codes.
A solenoid bolt is a type of electronic-mechanical locking mechanism. This type of lock is characterized by the use of a solenoid to throw the bolt. [ 1 ] Sophisticated solenoid bolt locks may use microprocessors to perform voltage regulation , reduce power consumption, and/or provide access control .
Electric locks use magnets, solenoids, or motors to actuate the lock by either supplying or removing power.Operating the lock can be as simple as using a switch, for example an apartment intercom door release, or as complex as a biometric based access control system.
Also called fail-open. In this configuration, applying electric current to the strike will cause it to lock. It operates the same as a magnetic lock would. If there is a power failure, the door opens merely by being pushed or pulled. A new trend is a strike that is quickly reversible from fail safe to fail secure (and back again if needed).
In order to open the kiln door, the power switch must first be turned off, which releases the key and allows it to be removed from the interlock. The key can then be used to unlock the kiln door. While the key is removed from the switch interlock, a plunger from the interlock mechanically prevents the power switch from being turned on. Power ...
In automotive electronics, a door control unit (DCU) is a generic term for an embedded system that controls a number of electrical systems associated with an advanced motor vehicle. A modern motor vehicle contains a number of ECUs ( electronic control units ), and the door control unit (DCU) is one of the minor ones.
The starter solenoid receives a large electric current from the car battery and a small electric current from the ignition switch. When the ignition switch is turned on (i.e. when the key is turned to start the car), the small electric current forces the starter solenoid to close a pair of heavy contacts, thus relaying the large electric ...
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