• Home
  • Tutorials
  • Ten Daily Electronic Common Sense-Section 85

    What kinds of control sensors are there?

    1. Steering wheel angle sensor
    2. Torque sensor
    3. Yaw rate sensor
    4. Lateral acceleration sensor

    What are the model naming methods for capacitors?

    The models of domestic capacitors are generally composed of four parts (not applicable to pressure-sensitive, variable, and vacuum capacitors). They represent name, material, classification and serial number in turn.
    The first part: the name, expressed in letters, the capacitor is C.
    Part II: Materials, indicated by letters.
    The third part: classification, generally represented by numbers, and individually represented by letters.
    The fourth part: serial number, represented by numbers.
    Use letters to indicate the material of the product: A-tantalum electrolysis, B-polystyrene and other non-polar films, C-high frequency ceramics, D-aluminum electrolysis, E-other material electrolysis, G-alloy electrolysis, H-composite medium, I-glass glaze, J-metallized paper, L-polyester and other polar organic films, N-niobium electrolysis, O-glass film, Q-paint film, T-low frequency ceramics, V-mica paper, Y-mica, Z -Paper

    What is the composition of the magnetic circuit variable reluctance type rotational speed sensor?

    The open magnetic circuit variable reluctance speed sensor is composed of permanent magnet, induction coil and soft iron.

    What are the characteristics of metal foil strain gauges and silk strain gauges?

    • Compared with wire strain gauges, metal foil strain gauges have the following characteristics:
      1. The metal foil grid is very thin, so the stress state it feels is closer to the stress state on the surface of the specimen. Secondly, when the foil and wire have the same cross-sectional area, the contact area between the foil and the adhesive layer is larger than that of the wire, making it work better with the test piece. Third, the wider ends of the foil grid have less lateral effects, thus improving the accuracy of strain measurements.
      2. The foil has a large surface area and good heat dissipation conditions, so a large current is allowed to pass, so a large signal can be output, and the measurement sensitivity is improved.
      3. The size of the foil grid is accurate and uniform, and it can be made into any shape, especially providing conditions for the manufacture of strain rosettes and small gauge length strain gauges, thereby expanding the use range of strain gauges.
      4. Convenient for mass production.

    What is the residual?

    Under the action of the same control quantity, the difference between the sensor output signal and the value obtained by the model is called residual.

    What is a pressure sensor?

    Pressure sensors are usually used to detect gas and liquid pressure, convert the pressure signal into a voltage signal and input it to the electronic control unit, which mostly measures differential pressure.

    What are the main technical characteristics of the CAT37DC/DC boost converter?

    1. The low quiescent current is 0.5mA.
    2. Low resistance (0.5Ω) power switch, the power efficiency is higher than 80%.
    3. Small 5-pin SOT23 (maximum height is 1mm) and TDFN (maximum height is 0.8mm) package, the pin configuration is compatible with LTl937.
    4. Adjustable output current up to 40mA, can drive up to 4 white LEDs connected in series.
    5. The operating frequency is 1.2MHz, and external low-value inductors and capacitors can be used.
    6. The input voltage can work normally as low as 2.5V.
    7. The turn-off current is lower than l.

    What are the types of fiber optic sensors?

    Optical fiber sensors are divided into three categories: functional type, non-functional type and light pickup type.

    What are the more significant features of the EDA design method?

    The more significant features of EDA design methods are as follows: high-level design language, system-level simulation and system-level comprehensive optimization methods, modular design and incremental design methods.

    What is a piezoelectric raindrop sensor?

    Piezoelectric raindrop sensor consists of vibrating plate, piezoelectric element, amplifier, housing and damping rubber.


    DISQUS: 0