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  2. Tilt detector - Wikipedia

    en.wikipedia.org/wiki/Tilt_detector

    Sometimes tilt sensors are incorrectly called inclinometers because the sensors simply generate a signal (as opposed to inclinometers that generate a reading and a signal). A basic circuit using a tilt sensor is shown here. For this assembly, the components used are: a tilt sensor, a 470 Ohms resistor, a LED and a 3V power supply.

  3. Inclinometer - Wikipedia

    en.wikipedia.org/wiki/Inclinometer

    An inclinometer sensor's true or absolute accuracy (which is the combined total error), however, is a combination of initial sets of sensor zero offset and sensitivity, sensor linearity, hysteresis, repeatability, and the temperature drifts of zero and sensitivity—electronic inclinometers accuracy can typically range from ±0.01–2 ...

  4. Tiltmeter - Wikipedia

    en.wikipedia.org/wiki/Tiltmeter

    This was a simple arrangement of two water pots, connected by a long water-filled tube. Any change in tilt would be registered by a difference in fill-mark of one pot compared to the other. Although extensively used throughout the world for Earth-science research, they have proven to be quite difficult to operate.

  5. List of free electronics circuit simulators - Wikipedia

    en.wikipedia.org/wiki/List_of_free_electronics...

    List of free analog and digital electronic circuit simulators, available for Windows, macOS, Linux, and comparing against UC Berkeley SPICE. The following table is split into two groups based on whether it has a graphical visual interface or not.

  6. Shack–Hartmann wavefront sensor - Wikipedia

    en.wikipedia.org/wiki/Shack–Hartmann_wavefront...

    A Shack–Hartmann (or Hartmann–Shack) wavefront sensor (SHWFS) is an optical instrument used for characterizing an imaging system. [1] [2] It is a wavefront sensor commonly used in adaptive optics systems. It consists of an array of lenses (called lenslets) of the same focal length.

  7. Hand geometry - Wikipedia

    en.wikipedia.org/wiki/Hand_geometry

    The device would measure the hand, and the numbers needed to match the punched holes of a user ID card to activate the circuit to be identified. David Sidlauskas was also a major player in the hand geometry device production, and he patented Handkey ID3D, the first hand scanner that worked in 3D that involved an optical measuring plate, camera ...

  8. Open-circuit time constant method - Wikipedia

    en.wikipedia.org/wiki/Open-circuit_time_constant...

    Then the resistance seen by the test voltage is found using the circuit in the right panel of Figure 1 and is simply V X / I X = R 1. Form the product C 1 R 1. Add these terms. In effect, it is as though each capacitor charges and discharges through the resistance found in the circuit when the other capacitor is an open circuit.

  9. Phase detector - Wikipedia

    en.wikipedia.org/wiki/Phase_detector

    Digital phase detectors can also be based on a sample and hold circuit, a charge pump, or a logic circuit consisting of flip-flops. When a phase detector based on logic gates is used in a PLL, it can quickly force the VCO to synchronize with an input signal, even when the frequency of the input signal differs substantially from the initial ...