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The output (plate) impedance of the diode vacuum tube rectifiers in the power supply is high, so the increasing impedance of the filter capacitors at low frequencies can mean that low frequency swings in the current drawn by output stages can cause voltage swings in the power supply voltage which feed back to earlier stages, [2] [6] [4] making ...
Air France Flight 447 (AF447/AFR447) [b] was a scheduled international passenger flight from Rio de Janeiro, Brazil, to Paris, France.On 1 June 2009, inconsistent airspeed indications and miscommunication led to the pilots inadvertently stalling the Airbus A330.
Burst noise is a type of electronic noise that occurs in semiconductors and ultra-thin gate oxide films. [1] It is also called random telegraph noise ( RTN ), popcorn noise , impulse noise , bi-stable noise , or random telegraph signal ( RTS ) noise.
The mysterious sound began emanating from the Starliner about a week before the spacecraft is slated to undock from the space station without its crew and make its autonomous journey back to Earth.
The disadvantage to a thin or removed ion barrier is the overall decrease in tube life from a theoretical 20,000 h mean time to failure for standard Gen III type, to 15,000 h MTTF for thin film types. This loss is largely negated by the low number of image-intensifier tubes that reach 15,000 h of operation before requiring replacement.
Flicker noise is a type of electronic noise with a 1/f power spectral density. It is therefore often referred to as 1/ f noise or pink noise , though these terms have wider definitions. It occurs in almost all electronic devices and can show up with a variety of other effects, such as impurities in a conductive channel, generation and ...
Digital binoculars A combination of digital camera, binoculars and a satellite uplink to send visual data. X-ray document scanner Q has a document scanner disguised as a tea tray. Phone booth trap Q Branch is testing a BT telephone box with a large airbag which expands and crushes the person inside. [11] Wheelchair and leg cast missile
Johnson–Nyquist noise (thermal noise, Johnson noise, or Nyquist noise) is the electronic noise generated by the thermal agitation of the charge carriers (usually the electrons) inside an electrical conductor at equilibrium, which happens regardless of any applied voltage.