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Electronic Engineering Terms & Definitions

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  • Term
    Definition
  • Amplifiers where the output is a switching waveform, at a frequency far higher than the highest audio signal that needs to be reproduced.
  • Amplifiers that are similar to class AB amplifiers except they use two or more supply voltages.
  • Amplifiers that modulate the supply voltage to the amplifier output devices so that it is never higher than necessary to support the signal swing.
  • Signals that are identical in amplitude and phase at both inputs; the potential or voltage that exists between neutral and ground.
  • Unbalanced current (current not returned) within a cable.
  • Interference that appears on both signal leads (signal and circuit return), or the terminals of a measuring circuit, and ground.
  • Identical signal components on both the + and - inputs of a differential amplifier or instrumentation amplifier (i.e. balanced pair).
  • Radio frequency current that flows on one or more conductors connected to an electric circuit, or alternatively, radio frequency voltage between conductors connected to an electric circuit.
  • Ability of an electronic circuit, a piece of equipment, or a subsystem or system to operate acceptably when subjected to radio frequency voltage or current on interconnecting conductors.
  • Electrical intermodulation in which there are produced frequencies equal to the sums and differences of a desired and an undesired frequency or of their harmonics.
  • Unwanted signals in a communication channel (as in a telephone, radio, or computer) caused by transference of energy from another circuit (as by leakage or coupling).
  • An electrical device that can measure amperage without breaking a circuit. Current probes sense the current flowing through a conductor and convert it to a voltage that can be viewed and measured on an oscilloscope.
  • System which acquires data, generally by digitizing analog channels and storing the data in digital form. These systems can be standalone or married to a computer and can acquire multiple channels of data.
  • System which acquires data, generally by digitizing analog channels and storing the data in digital form. These systems can be standalone or married to a computer and can acquire multiple channels of data.
  • A unit that defines a signal level by comparing it to a reference level. The reference level of 0dBm is defined as 1mW. The signal level in dBm is 10 times the log of the signal's power over that of the 0dBm reference.
  • A unit for expressing the ratio of two amounts of electric or acoustic signal power equal to 10 times the common logarithm of this ratio.
  • A unit for expressing the ratio of two amounts of electric or acoustic signal power equal to 10 times the common logarithm of this ratio.
  • A signed document regarding compliance of a product with European safety standards and legislation.
  • Detector is used as the final stage of demodulation in a superhetrodyne receiver. It is used to recover the envelope of the input or baseband signal from the intermediate frequency (IF) components or carrier.
  • The effect when a capacitor that has been charged for a long time and then been completely discharged has a small voltage on its terminal wires again, within seconds or minutes.

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