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Conduct Research Top

  • Accelerometer Noise
    The various noise sources of piezoelectric transducers connected to preamplifiers are discussed. Low level, low frequency measurements are limited by the electromechanical efficiency of the piezoelectric material used in the accelerometer and the characteristics of the preamplifier. Noise
  • Environmental Noise Control Trends in Instrumentation
    advantages, including simpler lower-cost system circuitry, better characteristics, such as noise and frequency response... etc. MEMS microphones target the consumer-electronics market and are therefore low-cost. In recent years their quality has improved to the point where they rival entry-level
  • Driving Long Cables
    Operation over long cables may affect frequency response and introduce noise and distortion when an insufficient current is available to drive cable capacitance. Unlike charge output systems, where the system noise is a function of cable length, ICP (R) sensors provide a high voltage, low impedance
  • Guidelines for Specifying Underwater Electroacoustic Transducers
    of the. For each transducer the lowest threshold of. piezoelectric ceramic and extends down to very. these factors listed above limits the maximum. low frequencies. drive level, thus the SPL. In air, underwater. transducers may not be driven with the same. The TVR and OCV are related to each other. power levels
  • Using a Digital Potentiometer to Optimize a Precision Single Supply Photo Detect
    . value potentiometer. (RF) is equal to: In this circuit, the digital potentiometer is configured to. EQUATION. form a T-network. The digital potentiometer is a good fit. in this circuit because of its low wiper resistance and. DCODE × RNOMINAL. = -------------------------. resistor adjustability
  • High- Precision Data Acquisition Boards - Why You Should Buy, Not Design
    required. There is also a benefit. not have to design the heart of the analog. loops, oscillations, and voltage drops. of reduced low-frequency noise from the. circuit, which includes accuracy, drift,. around other sensitive components. This. DC/DCs by regulating it out with the. low noise, temperature
  • Infrared Detector Basics (.pdf)
    the other noise sources are considerably higher, shown in figure 7. The. Johnson noise of the high-megohm resistor dominates at low frequencies ( <10Hz). At medium frequencies. (100 Hz), the tanδ noise of the pyroelectric element dominates the resultant noise density. At high. frequencies ( >1000 Hz
  • Agilent: Spectrum Analysis Basics
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10. RF attenuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12. Low-pass filter or preselector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12. Tuning

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