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Jack
A receptical for a plug used to interconnect electronic devices.

Joule
A unit of energy equal to one watt per second.

Jump, Jumper
To provide a temporary circuit around a component or other circuit A device that anables this action

Kapton
A voice coil design in which multiple layers are used on a Kapton coated coil form to create the rotor element in the speaker driver's linear motor. This allows greater power handling, and cooler operation.

Keypad
A panel usually made of metal or plastic with numbered push-button switches (like a touch-tone telephone) designed to provide access to certain types of control functions. Security, CD changers, and cellular systems represent typical examples

Kirchoff's Current Law (KCL)
A law stating that the total current entering a point or junction in a circuit must equal the sum of the current leaving that point or junction.

Kirchoff's Voltage Law (KVL)
A law stating stating that the voltage supplied to a DC circuit must equal the sum of the voltage drops within the circuit .

KHz (kilohertz)
A frequency of one thousand (1,000) cycles per second.