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The depletionlayer capacitance associated with the collector junction of a transistor.

Related Terms

ANTENNA EFFECT

A spurious effect, in a loop antenna, resulting from the capacitance of the loop to ground. antenna fe

CAPACITANCE

The property of an electric circuit to store energy by means of an electrostatic field and release it at a later time.

BARRIER CAPACITANCE

The capacitance that exists between the p-type and n-type semiconductor materials in a semiconductor pn junction that is reverse-biased so that it does not conduct. Also known as depletion-layer capacitance; junction capacitance.

CAPACITOR PICKUP

A phonograph pickup in which movements of the stylus in a record groove cause variations in the capacitance of the pickup.

CAPACITANCE-OPERATED INTRUSION DETECTOR

A boundary alarm system in which the approach of an intruder to an antenna wire encircling the protected area a few feet above ground changes the antenna-ground capacitance and sets off the alarm.

CAPACITOR MICROPHONE

A microphone consisting essentially of a flexible metal diaphragm and a rigid metal plate that together form a two-plate air capacitor; sound waves set the diaphragm in vibration, producing capacitance variations that are converted into audiofrequency signals by a suitable amplifier circuit. Also known as condenser microphone; electrostatic microphone.

CAPACITANCE ALTIMETER

An absolute altimeter which determines height of an aircraft above ground by measuring the variations in capacitance between two conductors on the aircraft when the ground is near enough to act as a third conductor.

CAPACITANCE METER

An instrument used to measure capacitance values of capacitors or of circuits containing capacitance.

COMMON-MODE INPUT CAPACITANCE

The equivalent capacitance of both inverting and noninverting inputs of an operational amplifier with respect to ground.

COMPLEX PERMITTIVITY

A property of a dielectric, equal to 0(C/C0), where C is the complex capacitance of a capacitor in which the dielectric is the insulating material when the capacitor is connected to a sinusoidal voltage source, and C0 is the vacuum capacitance of the capacitor.
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