TETM20-26 in stock German TETM20-26 electrical components TETM20-26 inventory

TETM20-26 electrical component is a sensor that converts the state of the measured object into a measurable optical signal. The working principle of a fiber optic sensor is to guide the light beam from the light source into a modulator via an optical fiber. Inside the modulator, interaction with external measured parameters causes changes in the optical properties of the light, such as intensity, wavelength, frequency, phase, and polarization state, resulting in a modulated optical signal. This signal is then transmitted via optical fiber to a photodetector and demodulated to obtain the measured parameters. Throughout this process, the light beam is guided in through the optical fiber, passes through the modulator, and is emitted out, where the function of the optical fiber is first to transmit the light beam, and second to act as an optical modulator.

TETM20-26 electrical component principle

The working principle of a discharge tube is gas gap discharge i When a certain voltage is applied between the two electrodes of the discharge tube, a non-uniform electric field is generated between the electrodes: under the action of this electric field, the gas inside the tube begins to ionize. When the external voltage increases to the point where the field strength between the electrodes exceeds the insulation strength of the gas, the gap between the two electrodes breaks down due to discharge, transitioning from an insulating state to a conductive state. After conduction, the voltage between the two electrodes of the discharge tube is maintained at a residual voltage level determined by the discharge arc channel. This residual voltage is generally very low, thereby protecting electronic equipment connected in parallel with the discharge tube from overvoltage damage.

TETM20-26 electrical component function

The modulation pulses generated by the oscillation circuit pass through the reflection circuit and are emitted as light pulses by the light-emitting diode GL. When the measured object enters the effective range of the receiver, the reflected light pulses enter the phototransistor DU. In the receiving circuit, the light pulses are demodulated into electrical pulse signals, amplified, and synchronously gated and shaped. Interference is then eliminated using digital integration or RC integration methods. Finally, a driver is triggered with or without delay to output the photoelectric switch control signal. Photoelectric switches generally have good hysteresis characteristics, so even if the detected object shakes within a small range, it will not affect the output status of the driver, thus keeping it in a stable operating zone. Meanwhile, the self-diagnostic system can display the light-receiving status and stable operating zone to monitor the operation of the photoelectric switch at any time. Proximity switches are widely used in aviation, aerospace technology, and industrial production. In daily life, they are applied in automatic doors in hotels, restaurants, and garages, as well as in automatic hot air blowers. For security and anti-theft purposes, important locations such as archives, accounting departments, financial institutions, museums, and vaults are typically equipped with anti-theft devices composed of various proximity switches. In measurement technology, such as for length and position; and in control technology, such as for the measurement and control of displacement, speed, and acceleration, a large number of proximity switches are also used.

TETM20-26 electrical component function

To obtain information from the external world, humans must rely on their sensory organs. However, relying solely on human sensory organs is far insufficient for studying natural phenomena and laws, as well as for their functions in production activities. To adapt to this situation, sensors are required. Therefore, it can be said that sensors are an extension of the human five senses, also known as electronic five senses. With the advent of the new technological revolution, the world has begun to enter the information age. In the process of utilizing information, the primary issue to address is acquiring accurate and reliable information, and sensors are the main channels and means for obtaining information in the fields of nature and production. In modern industrial production, especially in automated production processes, various sensors are used to monitor and control various parameters in the production process, ensuring that equipment operates in a normal or optimal state and that products achieve the best quality. Therefore, it can be said that without numerous high-quality sensors, modern production would lose its foundation. In basic discipline research, sensors hold an even more prominent position. The development of modern science and technology has entered many new fields: for example, observing the vast universe spanning thousands of light-years on a macro scale, and observing the particle world as small as fm on a micro scale; observing celestial evolution spanning hundreds of thousands of years vertically, and instantaneous reactions as short as s. In addition, various extreme technology studies have emerged, playing an important role in deepening the understanding of matter, exploring new energy sources, and developing new materials, such as ultra-high temperature, ultra-low temperature, ultra-high pressure, ultra-high vacuum, ultra-strong magnetic fields, and ultra-weak magnetic fields. Obviously, it is impossible to obtain a large amount of information that human senses cannot directly access without appropriate sensors. Many obstacles in basic scientific research lie first in the difficulty of obtaining object information, and the emergence of some new mechanisms and high-sensitivity detection sensors often leads to breakthroughs in these fields. The development of some sensors is often the pioneer of interdisciplinary development. Sensors have long penetrated into extremely broad fields such as industrial production, space exploration, ocean detection, environmental protection, resource surveys, medical diagnosis, bioengineering, and even cultural relic preservation. It is no exaggeration to say that from the vastness of space to the expanse of the ocean, and even various complex engineering systems, almost every modern project relies on various types of sensors.

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