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15 volt DC connector type found on many commercial airlines designed to provide power to travelers' electronic devices. The system is limited to 75 watts. [ 2 ] The use of a special connector is to prevent laptops charging at altitude and ensure that only approved adapters can be used.
These are used in both 120 and 230 volt countries, so the user must ensure supply and load voltages match. As these are mostly unknown to the public, they may be used where a power outlet is required in a semi-public location, such as on the XPT , where they are used to power nebulisers , without passengers being able to charge 'phones and laptops.
These connectors are common in live event power distribution. Many event production companies use power distributors with camlock connectors for feeder cable, and 12 or more L21-30 connectors which can each be broken out to three individual 120 V circuits via the use of a stringer box. [citation needed]
The cable connectors and sockets are keyed and colour-coded, according to the voltage range and frequency used; common colours for 50–60 Hz AC power are yellow for 100–130 volts, blue for 200–250 volts, and red for 380–480 volts. The blue fittings are often used for providing weather-proofed exterior sockets for outdoor apparatus.
A variety of different kinds of IEC 60320 plugs and sockets. IEC 60320 Appliance couplers for household and similar general purposes [1] is a set of standards from the International Electrotechnical Commission (IEC) specifying non-locking connectors for connecting power supply cords to electrical appliances of voltage not exceeding 250 V (a.c.) and rated current not exceeding 16 A. [1 ...
The square wave is filtered into a clean sine wave to minimise motor vibration, and amplified to 120 V to feed the turntable. [ 22 ] The Cirkus upgrade ( Introduced: 1993 ) The Cirkus kit aims to provide the LP12 with greater stability and ensure the bearing sits perfectly true to the chassis, through a redesigned bearing and stronger sub ...
In the broadcast, film, and television industries, the 4-pin XLR connector is the standard for 12 V power. The connectors are wired pin 1 negative, pin 4 positive. Often pins 1 and 2 will be negative, 3 and 4 positive for a higher current rating. Female connectors are used as supply and male connectors are used on loads.
AC power plugs and sockets connect devices to mains electricity to supply them with electrical power. A plug is the connector attached to an electrically-operated device, often via a cable. A socket (also known as a receptacle or outlet ) is fixed in place, often on the internal walls of buildings, and is connected to an AC electrical circuit.