JM Concept electrical components Germany JM Concept model JM Concept price

JM Concept electrical components utilize the good conductivity and fluidity of mercury to control the opening and closing of electrical circuits. They consist of a glass tube, mercury, fixed electrodes, lead wires, etc. After evacuating the air from the tube, it is filled with various gases and sealed. It is suitable for environments with dust, oil, water vapor, and corrosive gases, and can also be used as an explosion-proof switch in places with explosive gases. Given the high surface tension and specific gravity of the mercury inside the tube, along with its fluidity, the position of the mercury changes immediately upon slight tilting of the glass tube, making surface contact with the electrodes, thus enabling the switching of high AC and DC currents. Additionally, this type of switch features a lifespan of several million cycles at rated current, compact size, high sensitivity, no mechanical noise, and low cost, making it commonly used as a switch for automatic control.

JM Concept electrical component characteristics

Resolution refers to the ability of a sensor to detect the smallest change in the measured quantity. That is, if the input changes slowly from a non-zero value, the sensor output will not change until the input change exceeds a certain threshold, meaning the sensor cannot resolve changes below this level. Only when the input change exceeds the resolution does the output change. Typically, the resolution varies across the full scale range of a sensor; therefore, the maximum input change within the full scale that causes a step change in output is often used as the metric for resolution. If this metric is expressed as a percentage of the full scale, it is termed resolution. Resolution has a negative correlation with sensor stability.

JM Concept electrical component classification

Classification by application: toggle switches, band switches, record/playback switches, power switches, selector switches, limit switches, control switches, changeover switches, isolator switches, travel switches, wall switches, intelligent fire protection switches, etc. Classification by structure: microswitches, rocker switches, toggle switches, slide switches, pushbutton switches, key switches, as well as fashionable membrane switches and dot switches. Classification by contact type: switches can be divided into a contacts, b contacts, and c contacts based on contact type. Contact type refers to the relationship between the operating condition ("contacts close when the switch is operated/pressed") and the contact state. Select the appropriate contact type for the intended application. Classification by number of circuits: single-control switches, two-way switches, multi-control switches, dimmer switches, speed control switches, splash-proof boxes, doorbell switches, proximity switches, touch switches, remote-control switches, smart switches, card-operated power switches, and dedicated switches for bathroom heaters.

JM Concept electrical component applications

AC asynchronous motors are the most widely used among various electric motors. They are easy to use, reliable, inexpensive, and robust in structure, but have a low power factor and difficult speed regulation. Synchronous motors are commonly used for high-capacity, low-speed prime movers. Synchronous motors not only have a high power factor, but their speed is independent of load size, determined solely by grid frequency, offering stable operation. DC motors are often used in applications requiring wide-range speed regulation. However, they have commutators, complex structures, high costs, difficult maintenance, and are unsuitable for harsh environments. With the development of power electronics, AC motor speed regulation technology is maturing, equipment prices are decreasing, and adoption is increasing. The maximum output mechanical power a motor can handle under specified duty cycles without overheating is called its rated power; users must adhere to nameplate specifications. During operation, ensure the load characteristics match the motor characteristics to avoid runaway or stalling. Motors provide a wide power range, from milliwatts to tens of megawatts. Motor use and control are very convenient, featuring self-starting, acceleration, braking, reversal, and holding capabilities. Generally, during speed regulation, the output power of a motor varies with speed.

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