Techmalux electrical components Germany Techmalux model Techmalux price

Techmalux electrical components are switches controlled by electromagnets, that is, a combination of an electromagnet and a switch. When the electromagnet coil is energized, it generates electromagnetic attraction, causing the movable iron core to push or pull the switch contacts to close, thereby connecting the controlled circuit. Electromagnetic switches are widely used in various industries, most commonly as contactors in the industrial sector. An electromagnetic switch is the control switch on a starter motor and is one of the three major components of a starter (DC motor, transmission engagement mechanism, electromagnetic switch). Its working principle is that when the coil is energized, it generates electromagnetic attraction, causing the movable iron core to move, thereby on one hand pulling the transmission engagement mechanism to move the starter pinion forward to engage with the engine flywheel ring gear, and on the other hand pushing the switch contacts to connect, enabling the DC motor to operate and thus driving the engine to start.

Techmalux electrical component structure

Some gas discharge tubes use glass as the tube enclosure, while others use ceramic as the enclosure. The discharge tube is filled with inert gases with stable electrical properties (such as argon and neon). Common discharge tubes typically have two or three electrodes, separated by inert gas. Based on the number of electrodes, discharge tubes can be classified into two-electrode and three-electrode discharge tubes. A ceramic two-electrode discharge tube consists mainly of pure iron electrodes, nickel-chromium-cobalt alloy caps, silver-copper welding caps, and a ceramic tube body. The discharge electrodes inside the tube are coated with radioactive oxides, and the inner wall of the tube is also coated with radioactive elements to improve discharge characteristics. The discharge electrodes mainly come in two structures: rod-shaped and cup-shaped. In discharge tubes with rod-shaped electrodes, a cylindrical heat shield is installed between the electrode and the tube wall. This heat shield ensures uniform heating of the ceramic tube body, preventing local overheating that could cause the tube to crack. The heat shield is also coated with radioactive oxides to further reduce discharge dispersion. In discharge tubes with cup-shaped electrodes, a molybdenum mesh is installed at the cup opening, and cesium is contained within the cup, also serving to reduce discharge dispersion. A three-electrode discharge tube is also composed of pure iron electrodes, nickel-chromium-cobalt alloy caps, silver-copper welding caps, and a ceramic tube body. Unlike the two-electrode discharge tube, the three-electrode discharge tube includes a nickel-chromium-cobalt alloy cylinder as the third electrode, i.e., the ground electrode.

Techmalux electrical component parameters

The main characteristic parameters of quartz crystal resonators include nominal frequency, adjustment tolerance, temperature frequency tolerance, equivalent resistance, drive level, load capacitance, shunt capacitance, aging rate, and temperature range. (1) Nominal frequency is the specified center resonance frequency of the resonator under defined conditions. (2) Adjustment tolerance is the maximum deviation of the operating frequency from the nominal frequency at the reference temperature under defined conditions. (3) Temperature frequency tolerance is the allowable deviation from the operating frequency at the reference temperature across the entire operating temperature range under defined conditions. (4) Reference temperature is the specified ambient temperature when measuring quartz crystal resonator parameters. For oven-controlled quartz crystal resonators, it is generally the center point of the operating temperature range; (5) Load resonance resistance is the resistance value at the load resonance frequency when the quartz crystal resonator is connected in series with a specified external capacitor. (6) Drive level refers to the effective power consumed by the quartz crystal resonator during operation; it is a measure of the excitation state applied to the quartz crystal component. In actual use, the drive level can be adjusted; strong excitation facilitates oscillation startup, while weak excitation leads to poor frequency stability or even failure to oscillate. (7) Load capacitance refers to the effective external capacitance that, together with the quartz crystal resonator, determines the load resonance frequency. Load capacitance can be appropriately adjusted according to specific conditions, and such adjustment can generally tune the resonator's operating frequency to the nominal value. (8) Shunt capacitance refers to the static capacitance between the two pins of the quartz crystal resonator. (9) Aging rate refers to the error generated due to changes in the quartz crystal over time. (10) Temperature range refers to the allowable variation range of the ambient temperature during operation.

Techmalux electrical component principle

When the voltage applied to a varistor is below its threshold, the current flowing through it is extremely small, equivalent to a resistor with infinite resistance. That is, when the voltage applied to it is below its threshold, it acts like a switch in the open state. When the voltage applied to a varistor exceeds its threshold, the current flowing through it surges, equivalent to a resistor with near-zero resistance. That is, when the voltage applied to it is above its threshold, it acts like a switch in the closed state. Protection principle of surge absorbers: In the standby state, a varistor has very high impedance (several megaohms) relative to the protected electronic components and does not affect the characteristics of the original design circuit. However, when an instantaneous surge voltage occurs (exceeding the breakdown voltage of the surge absorber), the impedance of the surge absorber drops low (only a few ohms), creating a short circuit in the line, thereby protecting electronic products or more expensive components.

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