Kyosan electrical components Germany Kyosan model Kyosan price

Kyosan electrical components are one of the earliest devices for amplifying electrical signals. The cathode electron emission part, control grid, accelerating grid, and anode (plate) leads, enclosed in a glass container (usually a glass tube), are welded to the tube base. An electric field is used to inject electrons into the control grid in a vacuum to modulate the signal, and different parameter signal data after signal amplification or feedback oscillation are obtained at the anode. Early applications included electronic products such as televisions, radios, and loudspeakers. Later, they were gradually replaced by amplifiers and integrated circuits made from semiconductor materials, but in some high-fidelity audio equipment, vacuum tubes with low noise and high stability coefficients are still used as audio power amplification devices (in Hong Kong, vacuum tube power amplifiers are known as "tube amps").

Kyosan electrical component structure

Three basic configurations of fiber optic sensor networks. There are three basic configurations of fiber optic sensor networks, one of which is called the single-point sensor. Here, a single optical fiber serves only for transmission. Another type is the multi-point sensor, where a single optical fiber connects many sensors in series, allowing many sensors to share a light source for networked monitoring. Then there is the intelligent fiber optic sensor. A multi-point fiber optic sensor looks like a section of grating from the outside, with periodic intervals discovered through ultraviolet irradiation. When light enters the fiber, if the wavelength of the light is exactly twice the interval, the light wave will be strongly reflected. If the fiber is subjected to temperature changes or strain, this reflected wavelength will change. Many such sensors can be made on a single fiber, and connecting them allows for various sensing applications. Because optical fibers are flexible, they can be arranged in two or three dimensions, so the horizontal axis represents spatial position and the vertical axis represents the measurement object. What problem does such a sensor network solve? It solves the problem of what happened at what location and with what intensity, thereby providing two-dimensional information. This is the problem that intelligent fiber optic sensors need to solve. They have very prominent required characteristics, including small size, high strength, good stability, embeddability in materials, electromagnetic interference resistance, and environmental durability.

Kyosan electrical component principle

A diesel engine drives a generator to operate, converting the energy of diesel into electrical energy. Inside the diesel engine cylinder, clean air filtered through an air filter mixes thoroughly with high-pressure atomized diesel injected from the nozzle. Under the compression of the upward-moving piston, the volume decreases, the temperature rises rapidly, reaching the ignition point of diesel. The diesel ignites, the mixed gas burns violently, the volume expands rapidly, pushing the piston downward, which is called "power stroke". A gasoline engine drives a generator to operate, converting the energy of gasoline into electrical energy. Inside the gasoline engine cylinder, the mixed gas burns violently, the volume expands rapidly, pushing the piston downward to perform work. Whether it is a diesel generator or a gasoline generator, each cylinder performs work in a certain order. The thrust acting on the piston is converted into force to rotate the crankshaft via the connecting rod, thereby driving the crankshaft to rotate. By installing a brushless synchronous AC generator coaxially with the prime mover's crankshaft, the rotation of the prime mover can drive the rotor of the generator. Using the principle of 'electromagnetic induction', the generator outputs an induced electromotive force, generating current through a closed load circuit.

Kyosan electrical component principle

In addition to the function of converting optical signals into electrical signals like a photodiode, a phototransistor also has the function of amplifying electrical signals. The appearance of a phototransistor is not much different from that of a general transistor. Generally, a phototransistor only leads out two terminals—the emitter and the collector—while the base is not led out. The casing also has a window to allow light to enter. To increase illumination, the base region area is made large, while the emitter region is small, so incident light is mainly absorbed by the base region. During operation, the collector junction is reverse-biased, and the emitter junction is forward-biased. In the absence of light, the current flowing through the tube is the dark current Iceo = (1 + β) Icbo (very small), which is smaller than the penetration current of a general transistor; when illuminated, a large number of electron-hole pairs are excited, causing the current generated at the base Ib to increase. At this time, the current flowing through the tube is called photocurrent, and the emitter current Ie = (9 + β) Ib. It can be seen that a phototransistor has higher sensitivity than a photodiode.

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