Circuit Protection Terminology
| WAN |
| Wide Area Network- A network which encompasses interconnectivity between devices over a wide geographic area. |
| Warmup Time |
| Time required for a converter to operate within specifications after turn-on. This time normally precedes a long-term drift specification. |
| Weber |
| The practical unit of magnetic flux. It is the amount of magnetic flux, which, when linked at a uniform rate with a single turn electric circuit during an interval of one second, will induce an electromotive force of one volt. |
| Winding Factor (K) |
| The ratio of the total area of copper wire inside the center hole of a toroid to the window area of the toroid. |
| Window Area (Wa) |
| The area in and around a magnetic core which can be used for the placement of windings. |
| Withstand Voltage |
| Maximum voltage level that can be applied between circuits or components without causing a breakdown. Also see Breakdown Voltage and Isolation. |
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| xDSL |
| Refers to the various flavors of DSL (Digital Subscriber Loop). All encompassing term. |
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| XML |
| extensible markup language |
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| Zener Diode |
| A diode that maintains a relatively constant voltage when the reverse voltage across it is increased passed a specific point, called the zener voltage. |
| Zero Voltage Switching |
| Technique in which the power switch in a converter turns on and off when there is a zero voltage across it. This minimized switching transient noise output from the converter. |
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