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Electric gates alone, however solid and imposing they may be, cannot guarantee a completely secure environment electric locks, are often needed to boost the locking effectiveness of the gate motors. Electric gates are recommended to be used in combination with other security features to install a full security system .
An electric fence is a barrier that uses electric shocks to deter people and other animals [note 1] from crossing a boundary. The voltage of the shock may have effects ranging from discomfort to death.
Some bar gates are automatic and powered; others are manually operated. Manual gates are sometimes hung in the manner of a normal gate (i.e. hinged horizontally). In some places, bar gates are installed across suburban streets as a traffic calming measure, preventing through traffic, while allowing authorised vehicles such as emergency services ...
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A metal gate, in the context of a lateral metal–oxide–semiconductor (MOS) stack, is the gate electrode separated by an oxide from the transistor's channel – the gate material is made from a metal. In most MOS transistors since about the mid-1970s, the "M" for metal has been replaced by polysilicon, but the name remained.
The gates consist of metal box-type structures 20 metres (66 ft) wide for all rows, with a length varying between 18.5 and 29 metres (61 and 95 ft) and from 3.6 to 5 metres (12 to 16 ft) thick. The gates are connected to the concrete housing structures with hinges, the technological heart of the system, which allow the gates to move while ...
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