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Often airplanes use 400 Hz power so a 50 Hz or 60 Hz to 400 Hz frequency converter is needed for use in the ground power unit used to power the airplane while it is on the ground. Airlines might also utilize the converters to provide in-air wall current to passengers for use with laptops and the like.
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For 50 Hz systems such as PAL each frame is shown twice. Since 50 is not exactly 2×24, the movie will run 50/48 = 4% faster, and the audio pitch will be 4% higher, an effect known as PAL speed-up . This is often accepted for simplicity, but more complex methods are possible that preserve the running time and pitch.
Video games designed for PAL markets, before the sixth generation of video game consoles, had lower frame rates by design due to the 50 Hz output. This noticeably made fast-paced games, such as racing or fighting games, run slower. [20] Computer monitors marketed to competitive PC gamers can hit 360 Hz, 500 Hz, or more. [21]
Frequency conversion may refer to different processes affecting frequency of physical phenomena: A frequency changer , an electronic device that converts alternating current (AC) of one frequency to alternating current of another frequency
ASTEC UM 1286 UHF modulator, top cover taken off. An RF modulator (radio frequency modulator) is an electronic device used to convert signals from devices such as media players, VCRs and game consoles to a format that can be handled by a device designed to receive a modulated RF input, such as a radio or television receiver.
Aircraft often use 400 Hz power internally, so 50 Hz or 60 Hz to 400 Hz frequency conversion is needed for use in the ground power unit used to power the airplane while it is on the ground. Conversely, internal 400 Hz internal power may be converted to 50 Hz or 60 Hz for convenience power outlets available to passengers during flight.
Allows binary division to 100 Hz (32,768×100 Hz, or 2 15 ×100 Hz) and to 50 Hz, used in e.g. wattmeters and DC-AC converters 3.560 Amateur Radio: A common QRP frequency (80-meter band), also called 3560 kHz. Other less common crystals for the same band are 3.535, 3.550 (SKKC), 3.579 (digital modes) MHz. See also 7.025 MHz. 3.575611 PAL