dc plug,dc connector, dc jack, dc plug adapter. The matching jack or socket is then mounted in the equipment to be powered. Some of these jacks contain a normally closed contact, which can be used to disconnect internal batteries whenever the power supply is connected, avoiding the risk of battery leakage or explosion posed by incorrect recharging of the batteries.

There are a wide variety of sizes and designs for these power connectors, and many appear quite similar to each other yet are not quite mechanically or electrically compatible. The The male plug's mating shell outer diameter is 10 mm (0.39 in), and the pins are 1.5 mm (0.059 in) diameter

• Standard may include a limit of 20 V at 7.5 amperes^[1]
• 3-pin
  • Hosiden part number TCP8927-53
  • Kycon part number KPP-3P (obsolete) or KPPX-3P (RoHS)^[2]
• 4-pin
  • Kycon part number KPP-4P^[3][4] (obsolete) or KPPX-4P (RoHS)^[5]

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. Most battery belts and power supplies output 13.2 V, but equipment can usually handle a range of 11–18 volts to accommodate battery packs of varying voltages and charging while operating.

The readily available XLR3 is also used by some manufacturers as power supply plugs despite their being a well-accepted standard for other purposes.

[edit]dc plug,dc connector, dc jack, dc plug adapter

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