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  2. Switched-mode power supply - Wikipedia

    en.wikipedia.org/wiki/Switched-mode_power_supply

    Size and weight: 0.12 W/cm 3, 88 W/kg [30] Smaller than linear power supply. Compared to linear, a SMPS that is 20 kHz is 1/4, 100-200 kHz is 1/8, and 200 kHz–1 MHz types can be even smaller. [30]: 5–8 A transformer's power handling capacity of given size and weight increases with frequency provided that hysteresis losses can be kept down ...

  3. List of common display resolutions - Wikipedia

    en.wikipedia.org/wiki/List_of_common_display...

    16:9. 8,294,400. 7680 × 4320. 8K UHDTV. 4320p. 33,177,600. Many of these resolutions are also used for video files that are not broadcast. These may also use other aspect ratios by cropping otherwise black bars at the top and bottom which result from cinema aspect ratios greater than 16∶9, such as 1.85 or 2.35 through 2.40 (dubbed ...

  4. Power inverter - Wikipedia

    en.wikipedia.org/wiki/Power_inverter

    A power inverter, inverter, or invertor is a power electronic device or circuitry that changes direct current (DC) to alternating current (AC). [ 1] The resulting AC frequency obtained depends on the particular device employed. Inverters do the opposite of rectifiers which were originally large electromechanical devices converting AC to DC.

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  6. Duty cycle - Wikipedia

    en.wikipedia.org/wiki/Duty_cycle

    The duty cycle is defined as the ratio between the pulse duration, or pulse width ( ) and the period ( ) of a rectangular waveform. Spectrum in relation to duty cycle. A duty cycle or power cycle is the fraction of one period in which a signal or system is active. [ 1][ 2][ 3] Duty cycle is commonly expressed as a percentage or a ratio. A ...

  7. Dew point - Wikipedia

    en.wikipedia.org/wiki/Dew_point

    The US Occupational Safety and Health Administration recommends indoor air be maintained at 20–24.5 °C (68–76 °F) with a 20–60% relative humidity, [12] equivalent to a dew point of approximately 4.0 to 16.5 °C (39 to 62 °F) (by Simple Rule calculation below).

  8. Northern Ireland - Wikipedia

    en.wikipedia.org/wiki/Northern_Ireland

    The current population makes up 2.8% of the UK's population (67 million) and 27% of the island of Ireland's population (7.03 million). The population density is 135 inhabitants / km 2 . As of the 2021 census, the population of Northern Ireland is almost entirely white (96.6%). [ 147]

  9. Generation Z - Wikipedia

    en.wikipedia.org/wiki/Generation_Z

    Generation Z (often shortened to Gen Z), also known as Zoomers, [1] [2] [3] is the demographic cohort succeeding Millennials and preceding Generation Alpha.Researchers and popular media use the mid-to-late 1990s as starting birth years and the early 2010s as ending birth years, with the generation most frequently being defined as people born from 1997 to 2012.

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