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Cathode:
The
negative electrode, from which electrons are emitted and
to which positive ions are attracted. See anode.
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CAD:
("Computer-Aided
Design") Is the use of a wide range of computer-based
tools that assist engineers, architects and other design
professionals in their design activities.
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Capacitive
Crosstalk:
A
phenomenon where a signal on one line/trace is
capacitively coupled to an adjacent line/trace.
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CCCv:
Constant
current/constant voltage
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Center-Tapped
Transformer:
A
transformer with a connection at the electrical center
of a winding.
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CLK:
An
electronic clock signal consist of pulses, it used to
synchronize the entire operation of electronics
circuits. |
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CMOS:
Complementary
Metal-oxide Semiconductor
transistor.
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CNC:
Computer
Numerical Control, and refers specifically to a computer
"controller" that reads G-code
instructions and drives a machine tool, CNC does
numerically directed interpolation of a cutting tool in
the work envelope of a machine.
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Com
Port:
See
RS-232. |
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Common Anode:
A
device with a single positive voltage input connection,
and individual connections for cathode.
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Common Cathode:
A
device with a single negative voltage input connection,
and individual connections for anode. |
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Comp.
Prop:
Delay
Comparator Propagation delay. This is the lag between
the input crossing the comparator threshold, and the
output changing states.
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Comparator:
A
device, usually consisting of a pair of voltage
comparators, in which output indicates whether the
measured signal is within the voltage range bounded by
two different thresholds (an "upper" threshold and a
"lower" threshold).
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CPU:
Central
Processing Unit.
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Crossover:
In
an output stage (or similar amplifying stage which uses
one device to pull the signal up and
another
to pull the signal down), the region in which the
high-side device is turning on and the low-side device
is turning off, or vice versa.
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Crowbar
Circuit:
A
power supply protection circuit that rapidly
short-circuits ("crowbars") the supply line if the
voltage and/or current exceeds defined limits. In
practice, the resulting short blows a fuse or triggers
other protection, effectively shutting down the supply.
Usually achieved by an SCR or other silicon device, or
by a mechanical shorting device.
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CRT:
Cathode
ray tube.
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Current
Mode Feedback:
An
alternative op
amp topology usually used in high-speed amplifiers.
It is sensitive to feedback impedance,
and cannot be used as an integrator.
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