Terms-D

Digital/Analogue Conversion:

a method used to make an analogue signal coded into binary data and send as a digital signal.

Direct Current (DC):

A flow of current which is steady with time, and flows in one direction only

DSP:

Digital Signal Processor - a circuit which performs modification on a digital signal

DAC

Abbreviation for "digital to analog converter."  

 

damping

Reduction in magnitude of oscillation due to energy being lost as heat.

DC

Abbreviation for "direct current".

DC power supply

Any source of DC power for electrical equipment.

dead short

Short circuit having zero resistance.

decade

A frequency factor of ten.

decibel (dB)

a logarithmic representation of gain or loss.

depletion region

There area surrounding a pn junction that is depleted of carriers.    

device

Usually refers to component.

dielectric

Insulating material between two plates where an electrostatic field exists.

differentiator

A circuit in which the o/p voltage is in proportion to the rate of change of the input voltage. 

diffusion

It occurs When conduction band electrons move across a pn junction to combine with valence band holes.

diode

A two terminal device that conducts in only one direction.  

DIP

Abbreviation for "dual in line package."

direct coupling

Also known as DC coupling. DC signals are allowed.

direct current

Current that flows in only one direction.

discharge

Release of energy stored in either a battery or a capacitor.

dissipation

Release of electrical energy in the form of heat.

distortion

An undesired change in a waveform or signal.

doping

The process of adding impurity atoms to intrinsic or pure silicon or germanium to improve the conductivity of the semiconductor material.

dry cell

Chemical Cell generation due to DC.