fortress electrical components German fortress models fortress prices

fortress electrical components consist of wire wound turn by turn around an insulating tube. The wires are mutually insulated, and the insulating tube can be hollow or contain an iron core or magnetic powder core. Inductor coils are devices that operate based on the principle of electromagnetic induction. When current flows through a wire, it generates an electromagnetic field around the wire, and this electromagnetic field induces effects on the wire itself within the field range. The effect on the wire generating the electromagnetic field is called "self-inductance," meaning the changing current generated by the wire itself produces a changing magnetic field, which further affects the current in the wire; the effect on other wires within this electromagnetic field range is called "mutual inductance." The electrical characteristics of inductor coils are opposite to those of capacitors: "pass low frequencies, block high frequencies." High-frequency signals encounter significant resistance when passing through an inductor coil and struggle to pass through; whereas the resistance presented to low-frequency signals is relatively small, meaning low-frequency signals can pass through more easily. The resistance of an inductor coil to direct current is almost zero. Resistance, capacitance, and inductance all present a certain resistance to the flow of electrical signals in a circuit; this resistance is referred to as "impedance." The impedance presented by an inductor coil to current signals utilizes the coil's self-inductance. Inductor coils are sometimes abbreviated as "inductance" or "coil," represented by the letter "L." When winding an inductor coil, the number of turns wound is generally referred to as the coil's "number of turns."

fortress electrical component applications

Semiconductor diodes are used in almost all electronic circuits. The use of semiconductor diodes in circuits can protect the circuit and extend its service life. The development of semiconductor diodes has optimized integrated circuits and played a positive role in various fields. Diodes perform many functions in integrated circuits, maintaining their normal operation. The following briefly introduces the roles of diodes in the following four types of circuits. (1) Switching circuits: In digital and integrated circuits, the unidirectional conductivity of diodes is used to achieve circuit conduction or disconnection; this technology is widely applied. Switching diodes can effectively protect circuits from damage due to short circuits and other issues, and can also realize the functions of traditional switches. Another characteristic of switching diodes is their fast switching speed, which is incomparable to traditional switches. (2) Limiter circuits: In electronic circuits, limiter circuits are commonly used to process various signals. They are used to selectively transmit part of the signal within a preset voltage level range. Most diodes can be used for limiting, but sometimes specialized limiter diodes are required, such as when protecting instruments. (3) Voltage regulator circuits: Zener diodes are typically used in voltage regulator circuits. They are junction-type silicon semiconductor diodes manufactured using special processes. These special diodes have high impurity concentrations and high charge density in the space charge region, making it easy to form strong electric fields. When the reverse voltage across the Zener diode reaches a certain value, the reverse current increases sharply, causing reverse breakdown. (9) Varactor circuits: Varactor diodes are commonly used in varactor circuits to achieve automatic frequency control, tuning, frequency modulation, and scanning oscillation.

fortress electrical component classification

1. By application: pressure-sensitive and force-sensitive sensors, position sensors, liquid 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 quantities into analog electrical signals. (2) Digital sensors: Convert the measured non-electrical quantities into digital output signals (including direct and indirect conversion). (3) Pseudo-digital sensors: Convert the measured signal quantity into frequency signals or short-period signal outputs (including direct or indirect conversion). (4) Switch sensors: When a measured signal reaches a specific threshold, the sensor correspondingly outputs a set low-level or high-level signal. 4. By manufacturing process: Integrated sensors are manufactured using standard production technologies 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 thin films of corresponding sensitive materials 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 slurries of corresponding materials onto ceramic substrates, usually made of alumina, followed by heat treatment to form the thick film. Ceramic sensors are produced using standard ceramic processes or their 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 technology 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 reasonable to adopt ceramic and thick-film sensors. 5. By measurement objective: Physical sensors are made using the characteristic that certain physical properties 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 characteristics 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 sensors composed of different single transformation devices. (3) Application-specific sensors are sensors 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 action-type and reaction-type. 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 action-type; those detecting responses to form signals are called reaction-type. Radar and radio frequency detectors are examples of action-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.

fortress electrical component types

(1) Electron tubes can be classified into voltage amplifier tubes, power amplifier tubes, gas-filled tubes, thyratrons, ignitrons, frequency converter tubes, rectifier tubes, detector tubes, tuning indicator tubes (magic eye), voltage regulator tubes, etc., according to their different applications. (2) Electron tubes can be classified into voltage amplifier tubes, triodes, tetrodes, pentodes, hexodes, heptodes, octodes, nonodes, and composite tubes, etc., according to the different number of electrodes. Electron tubes with more than three electrodes are also called multi-electrode tubes or multi-grid tubes. (3) Electron tubes can be classified into bottle-shaped glass tubes (ST tubes), "acorn" tubes, cylindrical glass tubes (GT tubes), large glass tubes (G type tubes), metal-ceramic tubes, miniature tubes (also called peanut tubes or finger-shaped tubes, MT tubes), lighthouse tubes (lighthouse tubes), and sub-miniature tubes (pencil-shaped tubes), among others, according to their shape and envelope material. (4) Electron tubes can be classified into single diodes, diodes, double-diode triodes, double diodes, single triodes, power pentodes, beam tetrodes, beam pentodes, dual diodes, diode-pentode composite tubes, beam tetrodes, triode-pentode composite tubes, triode-hexode composite tubes, triode-heptode composite tubes, and beam power tubes, among other types, according to their internal structure. (5) Electron tubes can be classified into directly heated cathode electron tubes (current passes directly through the cathode to bring it to thermionic emission state) and indirectly heated cathode electron tubes (the cathode is heated by a filament next to it), according to the heating method of the cathode. (6) Electron tubes can be classified into sharp-cutoff shielded electron tubes and remote-cutoff shielded electron tubes, according to the shielding method. (7) Electron tubes can be classified into water-cooled electron tubes, air-cooled electron tubes, and naturally cooled electron tubes, according to the cooling method.

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