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DICTIONARY OF ELECTRONICS
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- UHF
-
Abbreviation for "ultra high
frequency.
- ultrasonic
-
Signals that are just above the
frequency range of human hearing
of approximately 20 kHz.
- uncharged
-
Material having atoms with the
same number of electrons in
orbit as the number of protons
in the nucleus. Having no
electrical charge.
- unijunction transistor
-
Three terminal device that acts
as a diode with its own internal
voltage divider biasing circuit.
- unity gain frequency
-
Frequency of operation for a
device where the gain of the
component drops to unity.
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