Bartec electrical components Germany Bartec model Bartec price

Bartec electrical components are current-limiting elements. When a resistor is connected in a circuit, its resistance is fixed, typically with two pins, limiting the current through the branch it is connected to. Resistors with unchangeable resistance are called fixed resistors. Those with variable resistance are called potentiometers or variable resistors. An ideal resistor is linear, meaning the instantaneous current through it is proportional to the applied instantaneous voltage. Variable resistors used for voltage division have one or two movable metal contacts pressed tightly against the exposed resistive element. The contact position determines the resistance between either end of the resistive element and the contact. There is a definite functional relationship between terminal voltage and current. It is a two-terminal device that reflects the ability to convert electrical energy into other forms, represented by the letter R, with the unit Ohm Ω. Actual devices such as light bulbs, heating wires, and resistors can all be represented as resistor elements. The resistance value is generally related to temperature, material, length, and cross-sectional area. The physical quantity measuring the effect of temperature on resistance is the temperature coefficient, defined as the percentage change in resistance when the temperature increases by 1 ℃. The main physical characteristic of a resistor is converting electrical energy into thermal energy; it is also known as a dissipative element, generating internal energy when current passes through it. Resistors typically serve to divide voltage and current in circuits. For signals, both AC and DC signals can pass through resistors.

Bartec electrical component classification

1. By application: pressure-sensitive and force-sensitive sensors, position sensors, level sensors, energy consumption sensors, speed sensors, acceleration sensors, radiation sensors, thermal sensors. 2. By principle: vibration sensors, humidity-sensitive sensors, magnetic-sensitive sensors, gas-sensitive sensors, vacuum degree sensors, biological sensors, etc. 3. By output signal: ① Analog sensors convert the measured non-electrical quantity into an analog electrical signal. ② Digital sensors: convert the measured non-electrical quantity into a digital output signal (including direct and indirect conversion). ③ Pseudo-digital sensors: convert the measured signal quantity into a frequency signal or short-period signal output (including direct or indirect conversion). ④ Switch sensors: when a measured signal reaches a specific threshold, the sensor outputs a set low-level or high-level signal accordingly. 4. By manufacturing process: Integrated sensors are manufactured using standard production processes for silicon-based semiconductor integrated circuits. Usually, part of the circuit for preliminary processing of the measured signal is also integrated on the same chip. Thin-film sensors are formed by depositing a thin film of corresponding sensitive material on a dielectric substrate (base plate). When using hybrid processes, part of the circuit can also be manufactured on this substrate. Thick-film sensors are made by coating a slurry of corresponding materials onto a ceramic substrate, usually made of alumina, followed by heat treatment to form the thick film. Ceramic sensors are produced using standard ceramic processes or certain variants (sol-gel, etc.). After appropriate preparatory operations, the formed elements are sintered at high temperatures. There are many common characteristics between thick-film and ceramic sensor processes; in some aspects, thick-film technology can be considered a variant of ceramic technology. Each process has its own advantages and disadvantages. Due to lower capital investment required for research, development, and production, as well as the high stability of sensor parameters, it is more reasonable to use ceramic and thick-film sensors. 5. By measurement purpose: Physical sensors are made using properties where certain physical characteristics of the measured substance undergo significant changes. Chemical sensors are made using sensitive elements that can convert chemical quantities such as composition and concentration of chemical substances into electrical quantities. Biological sensors are made using various biological or biomaterial properties to detect and identify chemical components in living organisms. 6. By composition: ① Basic sensors are the most fundamental single transformation devices. ② Combined sensors are composed of different single transformation devices. ③ Application-specific sensors are composed of basic or combined sensors combined with other mechanisms. 16. By mode of action: Sensors can be divided into active and passive types based on their mode of action. Active sensors include acting and reaction types. Such sensors can emit a certain detection signal to the measured object, detect changes produced by the detection signal in the measured object, or form a signal by producing a certain effect in the measured object. Those detecting changes in the detection signal are called acting type; those detecting responses to form signals are called reaction type. Radar and radio frequency range detectors are examples of acting type, while photoacoustic effect analysis devices and laser analyzers are examples of reaction type. Passive sensors only receive signals generated by the measured object itself, such as infrared radiation thermometers and infrared imaging devices.

Bartec electrical component applications

PN junction photodiodes, like other types of photodetectors, are widely used in devices such as photoresistors, charge-coupled devices, and photomultiplier tubes. They can output corresponding analog electrical signals based on the illuminance received or switch between different states in digital circuits. Photodiodes are also used in consumer electronics, such as CD players, smoke detectors, and infrared remote control devices for televisions and air conditioners. For many applications, photodiodes or other photoconductive materials can be used. They are often used to measure light, commonly working in camera light meters, automatic brightness adjustment for street lights, etc. All types of optical sensors can be used to detect sudden light exposure or detect light emission within the same circuit system. Photodiodes are often combined with light-emitting devices to form a module, commonly known as an optocoupler. This allows analyzing the motion of external mechanical components by analyzing the received light conditions. Another function of photodiodes is to act as an intermediary between analog and digital circuits, allowing these two circuit segments to be coupled via optical signals, which improves circuit safety. In scientific research and industry, photodiodes are often used to precisely measure light intensity because they have better linearity than other photoconductive materials. In medical equipment, photodiodes are also widely used, such as in X ray computed tomography and pulse detectors. PIN junction photodiodes are generally not used to measure very low light intensities. If high-sensitivity detectors are needed under weak light conditions, avalanche photodiodes, charge-coupled devices, or photomultiplier tubes can play a role, such as in astronomy, spectroscopy, night vision equipment, laser rangefinders, and other applications.

Bartec electrical component composition

Sensors generally consist of four parts: sensitive elements, conversion elements, conversion circuits, and auxiliary power supplies. Sensitive elements directly sense the measured quantity and output a physical quantity signal with a definite relationship to the measured quantity; conversion elements convert the physical quantity signal output by the sensitive element into an electrical signal; conversion circuits are responsible for amplifying and modulating the electrical signal output by the conversion element; conversion elements and conversion circuits generally require auxiliary power supply.

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