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UL: A common abbreviation for Underwriters’ Laboratories, Inc., a corporation supported by some underwriters
for the purpose of establishing safety standards on types of equipment or components.
Video Noise: In the video-frequency range, any electrical disturbance introduced from a source extraneous
to the signal.
Volt (V): The unit of measurement of electromotive force. One is equivalent to the force required to produce
a current of one ampere through a resistance of one ohm.
Voltage: Electrical pressure—i.e., the force which causes current to flow through an electrical conductor.
Voltage Rating: The maximum voltage which an electrical device or component can sustain
without breaking down.