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  2. Variable reluctance sensor - Wikipedia

    en.wikipedia.org/wiki/Variable_reluctance_sensor

    A variable reluctance sensor (commonly called a VR sensor) is a transducer that measures changes in magnetic reluctance. When combined with basic electronic circuitry, the sensor detects the change in presence or proximity of ferrous objects. With more complex circuitry and the addition of software and specific mechanical hardware, a VR sensor ...

  3. Phase noise - Wikipedia

    en.wikipedia.org/wiki/Phase_noise

    Phase noise ( ℒ (f)) is typically expressed in units of dBc /Hz, and it represents the noise power relative to the carrier contained in a 1 Hz bandwidth centered at a certain offsets from the carrier. For example, a certain signal may have a phase noise of −80 dBc/Hz at an offset of 10 kHz and −95 dBc/Hz at an offset of 100 kHz.

  4. Total variation denoising - Wikipedia

    en.wikipedia.org/wiki/Total_variation_denoising

    This example created using demo_tv.m by Guy Gilboa, see external links. In signal processing, particularly image processing, total variation denoising, also known as total variation regularization or total variation filtering, is a noise removal process ( filter ). It is based on the principle that signals with excessive and possibly spurious ...

  5. Voltage-regulator tube - Wikipedia

    en.wikipedia.org/wiki/Voltage-regulator_tube

    A voltage-regulator tube ( VR tube) is an electronic component used as a shunt regulator to hold a voltage constant at a predetermined level. Physically, these devices resemble vacuum tubes, but there are two main differences: Their glass envelopes are filled with a gas mixture, and. They have a cold cathode; the cathode is not heated with a ...

  6. These are the best deals to shop during Amazon's 4th of July ...

    www.aol.com/these-are-the-best-deals-to-shop...

    June 30, 2024 at 7:43 AM. These are the best deals to shop during Amazon's 4th of July Sale — save up to 90%. It's almost the 4th of July, and there are deals and savings to be had. While we're ...

  7. Acoustic attenuation - Wikipedia

    en.wikipedia.org/wiki/Acoustic_attenuation

    Acoustic attenuation. In acoustics, acoustic attenuation is a measure of the energy loss of sound propagation through an acoustic transmission medium. Most media have viscosity and are therefore not ideal media. When sound propagates in such media, there is always thermal consumption of energy caused by viscosity.

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