"A"
"B"
"C",
"D",
"E",
"F",
"G",
"H",
"I",
"J",
"K",
"L",
"M",
"N",
"O",
"P",
"Q",
"R",
"S",
"T",
"U",
"V",
"W",
"X",
"Y",
"Z"
The previous portion of the D listing;
"D" Terms and definitions
DETECTION. The separation of low-frequency (audio) intelligence from the high-frequency carrier.
DETECTOR. A mixer or converter in a superheterodyne receiver. [RF Phase Detector Manufacturers]
DEVICE UNDER TEST. A component or device under going testing. [Example DUT Circuit]
DIBIT: A group of two bits. Note: The four possible
states for a dibit are 00, 01, 10, and 11.
DIE BONDING. Process of mounting a chip to a package. Also reference the page covering PCB Terms and Definitions
DIELECTRIC. An insulating (nonconducting) medium. A substance in which an electric field
may be maintained with zero or near-zero power
dissipation, i.e., the electrical conductivity is zero or
near zero. An insulator; a term applied to the insulating material between the plates of a capacitor.
DIELECTRIC CONSTANT. The ratio of a given dielectric to the dielectric value of air. The property of an insulation
which determines the electrostatic energy stored per unit
volume for unit potential gradient.
DIELECTRIC BREAKDOWN. The rupture of an insulating material when the electric stress exceeds the dielectric
strength.
DIELECTRIC FIELD. The space between and around charged bodies in which their influence is felt.
Also called ELECTRIC FIELD OF FORCE or an ELECTROSTATIC FIELD.
DIELECTRIC HEATING. The heating of an insulating material by a high-frequency electric field.
DIELECTRIC HYSTERESIS LOSS. Power loss of a capacitor because of the changes in orientation of
electron orbits in the dielectric; the changes in orientation are caused by rapid reversal in polarity of line
voltage. The higher the frequency, the greater the loss.
DIELECTRIC LEAKAGE. Power loss of a capacitor because of the leakage of current through the
dielectric. Also relates to leakage resistance; the higher the leakage resistance, the lower the dielectric
leakage.
DIELECTRIC LOSSES. The losses resulting from the heating effect on the dielectric material between
conductors.
DIELECTRIC STRENGTH. The ability of an insulator to withstand a potential difference without
breaking down (usually expressed in terms of voltage). The maximum potential gradient that a material can withstand without rupture. As a material property it usually is calculated by dividing the breakdown voltage by the thickness of the material between a pair of test electrodes.
DIFFERENCE FREQUENCY. Beat Frequency. The difference between the oscillator frequency and the unknown audio frequency.
DIFFERENCE OF POTENTIAL. A voltage between two points.
DIFFERENTIAL AMPLIFIER. A circuit that amplifies the difference between two input signals.
Op Amp Differential Circuit
Differential Pair. A pair of conductors with one line carrying the true version and the other line carrying the inverted version of the signal. Differential Pair Layout Guidelines.
Differential Interface. See Differential Pair.
| Differential Transceiver. A buffer or amplifier that transmits and receives differential signals. |  Differential Transceiver |
| DIFFERENTIATING AMPLIFIER. A circuit that performs the derivative of an input signal. An Operational Amplifier [Op-Amp] is shown in the graphic. |
 Op Amp Differentiating Circuit |
DIFFRACTION. The bending of waves (as light or RF) when the waves are met with some form of obstruction.
DIFFUSION. The scattering of reflected light waves from an object, such as white paper. Controlled application of impurity atoms to a semiconductor substrate.
DIGIT. A symbol that represents one of the nonnegative integers smaller than the radix. For example, in decimal notation a digit is one of the characters from 0 through 9.
DIGITAL SUBSCRIBER LINE (DSL). In Integrated Services Digital Networks (ISDN), equipment that provides full-duplex service on a single twisted metallic pair at a rate sufficient to support ISDN basic access and additional framing, timing recovery, and operational functions.
Next set of "D" definitions and terms
