yaskawa electrical components Germany yaskawa model yaskawa price

yaskawa electrical components refer to an electrical device that disconnects the circuit by melting the fusible element with the heat generated by itself when the current exceeds a specified value. A fuse is a current protection device made based on the principle that when the current exceeds the specified value for a period of time, the heat generated by itself melts the fusible element, thereby disconnecting the circuit. Fuses are widely used in high and low voltage distribution systems, control systems, and electrical equipment as short-circuit and overcurrent protectors, and are one of the most commonly used protective devices. It uses a metal conductor as the fusible element connected in series in the circuit. When overload or short-circuit current passes through the fusible element, it melts due to its own heating, thereby breaking the circuit. The fuse has a simple structure and is easy to use. It is widely used in power systems, various electrical equipment, and household appliances as a protective device.

yaskawa electrical component features

Mercury switches achieve switching on and off based on the movement of mercury encapsulated in a glass or metal housing. Therefore, compared with mechanical switches, mercury switches have many characteristics: (1) can be used in harsh environmental conditions. Since the mercury switch is sealed, the internal mercury is isolated from the outside, so it can be used in environments with oil, steam, dust, and corrosive gases. (2) The external force required for switching is small. Mercury is the only metal that remains liquid at room temperature. It has high surface tension and specific gravity. Only a slight external force is needed to tilt the mercury switch, causing the mercury to move and achieve switching. (3) Mercury has good conductivity, and the contact resistance between the electrodes of the mercury switch is generally very small. (4) The current allowed to pass through the mercury switch depends on the electrode material. (5) Since the switching of the mercury switch is determined by the gravity of the mercury, it can work reliably for a long time. (6) The electrode contacts are liquid contacts, with no noise. (7) Since mercury can flow, as long as the acceleration reaches above the set value, the mercury switch can turn on or off, so it can be used as a vibration-sensitive element. (8) Small size, diverse forms, and fully sealed device. (9) Simple structure and low price. (10) High quality, premium products, suitable for beginners

yaskawa electrical component principle

Bipolar junction transistors are divided into two types by material: germanium transistors and silicon transistors. Each type has two structural forms: NPN and PNP. However, the most commonly used are silicon NPN and germanium PNP transistors. (Among them, N means negative pole. In N-type semiconductors, phosphorus is added to high-purity silicon to replace some silicon atoms, generating free electrons for conduction under voltage stimulation. P means positive pole, where boron is added to replace silicon, generating a large number of holes to facilitate conduction). Except for the different power supply polarities, their working principles are the same. The following introduces only the current amplification principle of NPN silicon transistors. For an NPN transistor, it is composed of 6 pieces of N-type semiconductor sandwiching one piece of P-type semiconductor. The PN junction formed between the emitter region and the base region is called the emitter junction, and the PN junction formed between the collector region and the base region is called the collector junction. The three leads are called the emitter e, base b, and collector c, respectively. When the potential at point b is higher than the potential at point e by a few tenths of a volt, the emitter junction is in forward bias. When the potential at point C is higher than the potential at point b by a few volts, the collector junction is in reverse bias. The collector power supply Ec must be higher than the base power supply Eb. In manufacturing transistors, the majority carrier concentration in the emitter region is intentionally made greater than that in the base region. At the same time, the base region is made very thin, and the impurity content is strictly controlled. In this way, once the power is connected, due to the forward bias of the emitter junction, the majority carriers (electrons) in the emitter region and the majority carriers (holes) in the base region easily diffuse across the emitter junction towards each other. However, since the concentration of the former is much greater than that of the latter, the current passing through the emitter junction is basically an electron flow, which is called the emitter electron flow.

yaskawa electrical component structure

1. The electrode is the site of electrochemical reactions where fuel undergoes oxidation and oxidant undergoes reduction in a fuel cell. Its performance depends mainly on the catalyst performance, electrode materials, and electrode manufacturing processes. 2. The main function of the electrolyte membrane is to separate the oxidant from the reductant and conduct ions. 13. The current collector, also known as the bipolar plate, functions to collect current, separate the oxidant from the reductant, and guide reaction gases. The performance of the current collector mainly depends on its material properties, flow field design, and processing technology.

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