Category Archives: Technology

The main parameters of the potentiometer

Nominal resistance, zero resistance and rated power

The nominal resistance belongs to the resistance marked clearly on the potentiometer, that is, the resistance between the two fixed ends of the potentiometer; the zero resistance refers to the minimum resistance of the potentiometer, that is, the minimum resistance between the moving end and any certain end Value; potentiometer rated power refers to the maximum power allowed for long-term continuous load under the specified rated temperature when the atmospheric pressure is 87 ~ 107 kpa in AC and DC circuits.

Variation characteristics of potentiometer resistance

The change characteristic of the resistance value of the potentiometer refers to the relationship between the resistance value of the potentiometer changes with the length of the movable contact or the angle of rotation of the rotating shaft, that is, the characteristic of the resistance output function.

potentiometer resolution

The resolution of the potentiometer is also called the resolution of the potentiometer. For the winding potentiometer, when the moving contact moves each turn, the ratio of the output voltage change of the potentiometer to the output voltage is the resolution. For a linear winding potentiometer, the theoretical resolution is the reciprocal of the total number of winding turns, and it is expressed as a percentage. The more the total number of turns of the potentiometer, the higher the resolution.

Dynamic noise of potentiometer

The dynamic noise of the potentiometer refers to the electrical noise generated when the potentiometer slides on the resistor when its moving contact point slides on the resistor. Dynamic noise is the main parameter of sliding noise, and its size is related to the speed of the rotating shaft, the contact resistance between the contact point and the resistor, the uneven variation of the resistivity of the resistor, the number of moving contacts and the magnitude of the applied voltage.

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What is the working principle of instant water dispenser

The first step is the water out of the tank. Our water dispensers generally need to manually fill the water tank. The specific method is that we must fill the water tank with water according to the requirements of the scale of the water tank before use, so as to meet our next use.

The second step is to achieve water output through flow control. For example, we set the water to 250ml, then after confirming at this time, the outlet flow switch will be turned on, and then accurately measure the incoming water is 250ml, this is to close the valve, so the water enters the heater position.

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The third step is rapid heating according to the set temperature. Our instant water dispensers have a very powerful heating module. When the water enters the heating module container, it is then heated according to the water temperature we set. For example, if the waterproof level is set to 85 ° C, after the module is powered on, it will generate heat and quickly heat the water to 85 ° C.

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The fourth step is the control of effluent. When the water temperature reaches the required heating temperature, the water outlet switch will open. In this way, the heated water passes through the water outlet and then is discharged. We use a cup to catch it, which completes the entire water use process. In fact, it takes a few seconds from start to finish.

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How to configure proper motor voice coil motor drive control

The voice coil motor is a DC servo motor that converts electrical signals into linear displacement. It is based on the principle of ampere force, that is, the energized coil is placed in a magnetic field to generate force. The force is proportional to the current applied to the coil. The voice coil motor theoretically has a series of advantages such as infinite resolution, no lag, high response, high acceleration, high speed, small size, good force characteristics, and convenient control, making it more suitable for requiring high acceleration, high frequency excitation, Fast and high-precision positioning control system;

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Control modes: position, speed, torque; using field-based torque, speed, and position control to achieve optimized dynamic performance and cycle time, which combines acceleration forward feed and acceleration-limited buffering.

The variety of optional control methods includes: through fieldbus, pulse / direction or digital / analog input, or integrated into existing control design; stand-alone operation mode can also be used.

Easy programming: The parameterization of the drive is fast and convenient, and it can be quickly programmed using free software;

Main encoder feedback: digital incremental encoder number; Hall analog sin / cos encoder.

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You will also want to harmony enough time concerning the release, and establishing whether it is stable Finally.

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this solution usually addresses several of the community amount vulnerabilities nonetheless it generally prospects end-user machines even now susceptible to attack and an infection from phishing, overseas university,drive-by downloads, and destructive e-mail.

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