Glossary of Electronic Terms, Electronic terms starting from
alphabet J
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.
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 semiconductor diode in which the rectifying characteristics occur at a
junction between the n-type and p-type
J
A prefix used to indicate an imaginary number. (Operator j)
Jack
Socket or connector into which a plug may be inserted.
JFET
Abbreviation for "Junction field effect transistor".
Joule
The unit of work and energy.
Junction
Contact or connection between two or more wires or cables. The area where the
p-type material and n-type material meet in a semiconductor.