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J1850. An automotive bus used for diagnostics and data sharing applications in vehicles. J1850 may use either a single or differential wire approach. [J1850 Bus Description]
Jabber. A condition wherein a station transmits for a period of time longer than the maximum permissible packet length, usually due to a fault condition.
JACK. A socket. A receptacle.
JACKET. The outer sheath which protects a cable
JAN. Joint Army Navy specification.
J-ANTENNA. A half-wave antenna. [Dictionary of Antenna Terms]
JEDEC. Joint Electron Device Engineering Council.
JFET. Junction FET [Field Effect Transistor], [FET Manufacturers].
JITTER. Jitter is the difference [deviation] between the expected occurrence of a signal edge and the time the edge actually occurs [phase variation]. Jitter may also be expressed as the movement of a signal edge from its ideal position in time [the expected position]. Abrupt and unwanted variations of one or
more signal characteristics, such as the interval between successive pulses, the amplitude of
successive cycles, or the frequency or phase of successive cycles.
JTAG. Joint Test Action Group. IEEE Std 1149.1-1990, Test Access Port and Boundary-Scan Architecture (3) The JTAG interface is a serial bus with four signals: Test Clock (TCK), Test Mode Select (TMS), Test Data Input (TDI), and Test Data Output (TDO).
[JTAG Bus Description]
JOHNSON NOISE. Thermal Noise.
JOULE. The work done by a force of one newton acting through a distance of one meter.
JOYSTICK. A peripheral device used with personal computers to translate physical movement in two axis into electrical signals used by the computer. JoyStick PinOut
JUMPER. A short length of wire used to complete a circuit.
JUNCTION. The connection between two or more conductors. The contact between two dissimilar metals or materials, as in a thermocouple.
JUNCTION BOX. A box with a cover that serves the purpose of joining different runs of wire or cable and provides space for the connection and branching of the enclosed conductors.
JUNCTION DIODE. A two-terminal device containing a single crystal of semi-conducting material that ranges from P-type at one terminal to N-type at the other. [Diode Manufacturers]
JUNCTION FET. JFET [Field Effect Transistor]. [FET Manufacturers]
JUNCTION TRANSISTOR. A bipolar transistor constructed from interacting PN junctions. The term is
used to distinguish junction transistors from other types, such as field-effect and point-contact. [BJT Manufacturers]
"K" Terms
