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. Due to the high surface tension and specific gravity of the mercury inside the tube, as well as its fluidity, the position of the mercury changes immediately with even a slight tilt of the glass tube, making surface contact with the electrodes. Therefore, it can be used to switch large AC and DC currents. In addition, this type of switch features a service life of up to several million cycles at rated current, small size, high sensitivity, no mechanical noise, and low price, so it has always been 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 when the input change does not exceed a certain value, meaning the sensor cannot resolve this change in the input. The output only changes when the input change exceeds the resolution. Typically, the resolution at different points within the full-scale range of a sensor is not the same. Therefore, the maximum change in the input that causes a step change in the output within the full-scale range is commonly used as the indicator for resolution. If the above indicator is expressed as a percentage of the full scale, it is called resolution. Resolution is negatively correlated 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, smart 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-type contacts, b-type contacts, and c-type contacts. Contact type refers to the relationship between the operating condition (contacts close when the switch is pressed) and the contact state. Select the appropriate contact type based on the application. Classification by number of switches: 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 in various electric motors. They are easy to use, reliable, inexpensive, and have a robust structure, but they 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 the load size and depends only on the grid frequency, resulting in stable operation. DC motors are often used in applications requiring wide-range speed regulation. However, they have commutators, complex structures, high prices, and difficult maintenance, making them unsuitable for harsh environments. With the development of power electronics, AC motor speed regulation technology is maturing, equipment prices are decreasing, and they are beginning to be applied. The maximum output mechanical power that a motor can handle under a specified duty cycle without causing overheating is called its rated power; attention should be paid to the ratings on the nameplate during use. When the motor is running, care must be taken to match the load characteristics with the motor characteristics to avoid overspeed or stalling. Motors can provide a wide range of power, from milliwatts to tens of megawatts. The use and control of motors are very convenient, featuring capabilities such as self-starting, acceleration, braking, reversal, and holding. Generally, when a motor's speed is regulated, its output power changes with the speed.

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