Electronic Definitions (U)

[U] Presenting a list of electronic terms starting with letter u that are available for more detailed lookup for their definitions or abbreviation explanation. All terms are listed in alphabetical order for easy browsing.

Electronic Acronyms And Terms For [U]	Description	Other Electronic Terms Somewhat Related;
UADSL	"Universal Assymetric Digital Subscriber Line"
UART	"Universal Asynchronous Receiver Transmitter"
UDL	"Uniformly Distributed Load"
UHF	"Ultra High Frequency"	surveillance
ULA	"Uncommitted Logic Array" - Is an array of standard logic gates i.e. each element is identical manufactured on a single LSI chip
Ultrasound	- Sound or other vibrations having an ultrasonic frequency, particularly as used in medical imaging
UMTS	"Universal Mobile Telecommunications Systems"	arib, imttc
Underflow	- Occurs when arithmetic operations produce results that are too small to store
Unijunction Transistor	- Abbreviated UJT, this low power thyristor is useful in electronic timing, waveshaping, and control applications
Unity Gain Frequency	- The frequency where the voltage gain of an op amp is 1. It indicates the highest usable frequency. It is important because it equals the gain bandwidth product.
Universal Curve	- A solution in the form of a graph that solves a problem for a whole class of circuits. The universal curve for self-biased JFETs is an example.
Universal Fixture	- Tooling designed for use on several differently shaped substrate assemblies
Unwanted Bypass Circuit	- A circuit that appears in the base or collector sides of a transistor because of internal transistor capacitances and stray wiring capacitancestacircuit that appears in the base or collector sides of a transistor because of internal transistor capacitances and stray wiring capacitances
UPC	"Universal Product Code" - Is the standard bar code now adopted by European countries
Uplink	- The earth to satellite signal path
Uploading	- Uploading is the transmission of a file from one computer system to another, usually larger computer system
UPS	"Uninterruptible Power Supply"	upside down pnp bias
Upside Down PNP Bias	- When you have a positive power supply and a pnp transistor, it is customary to draw the transistor upside-down. This is especially helpful when the circuit uses both npn and pnp transistors.
URL	"Uniform Resource Locator"
USART	"Universal Synchronous/Asynchronous Receiver Transmitter"
USB	"Universal Serial Bus" "Upper Side Band"
UT	"Universal Time" (GMT)	utility program, utp
Utility Program	- Is a systems program designed to perform a commonplace task such as the transfer of data from one storage device to another or sorting a set of data	ddt
UTP	"Unshielded Twisted Pair"