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ProTek Devices today introduced a new ultra-low capacitance steering diode/transient voltage suppressor array (TVS array). The new products mainly provide circuit protection for Gigabit Ethernet applications, smart phones, and graphics card interfaces. The new PAZC099 capacitor is ultra low, 0.9pF. The PAZC099 requires a rated voltage of 5.0 V for applications with a maximum pulse power of 100 watts per line (8/20 microseconds). The product also provides ideal circuit protection for USB 1.0,...
CREE Inc. (Nasdaq: CREE), a market leader in silicon carbide (SiC) power devices, announced a new series of packaged diodes. With the current silicon carbide Schottky diode technology, this series of diodes provides the highest blocking voltage in the industry. Cree 1700V Z-Rec? Schottky diodes fundamentally eliminate the reverse recovery losses present in silicon PiN diode replacements, enabling systems to achieve ultra-high efficiency with smaller, lighter and improved overall reliability....
On June 1, 2016, Intersil, a leading provider of innovative power management and precision analog solutions, announced the launch of the ISL78365 laser diode driver for automotive head-up display (HUD) systems. This highly integrated device drives up to 750mA of maximum current from four high-intensity laser diodes for projecting full-HD color video onto the windshield, with currents close to two of the competitor's solutions. Times. The ISL78365's higher current and faster switching speeds...
If the three major components of resistance, capacitance, and inductance are our most common electronic components, the diode is the semiconductor electronic component we see the most. Why is the diode different from the resistor, capacitor, and inductor? It is called a semiconductor electronic component. This is because the diode is made of a semiconductor material according to the characteristic that the P-pole flows to the N-pole according to its charge, so it is called a semiconductor...
Higher off-state voltage provides greater ESD protection for large touch screens This article refers to the address: http:// 21ic News Littelfuse has announced the SPxx-01WTG-C-HV series (SPxx series) universal ESD protection transient suppression diode array (SPA diode). The SPxx series is further enhanced with previous improvements to prevent sensitive electronic devices from being damaged by electrostatic discharge (ESD) and other transient overvoltages. These new "high voltage" 0201 form...
Among the family of electronic components, there is an element that allows only current to flow in a single direction and has two electrodes, called a diode. English: Diode Diodes are the cornerstone of the modern electronics industry. Early diodes Early diodes included Cat's Whisker Crystals and Thermionic Valves. In 1904, the British physicist Fleming invented the world's first electronic diode--vacuum electronic diode based on the "Edison effect." It relies on the cathode to emit electrons...
The design of any high performance ADC, especially the RF sampling ADC, input or front end, is critical to achieve the required system level performance. In many cases, RF sampling ADCs can digitally quantize signal bandwidths of hundreds of MHz. The front end can be active (using amplifiers) or passive (using transformers or baluns), depending on the system requirements. In either case, components must be carefully selected to achieve optimal ADC performance at the target frequency band....
Tungsten ditungstate (WTe2) is a transitional metal chalcogenide with a layered structure. In its orthorhombic cell, the tungsten chain is distributed along the a-axis of the ruthenium layer in a one-dimensional direction, and is a non-magnetic semi-metal. material. WTe2 has long been known for its good thermoelectric properties. The Cava research group of Princeton University unexpectedly discovered in 2014 that WTe2 has unsaturated large magnetoresistance (LMR) properties under normal...
1. Multimeter structure (500 type) The multimeter consists of three main parts: the meter head, the measuring circuit and the changeover switch. (1) Header: It is a high-sensitivity magneto-electric DC ammeter. The main performance indicators of the multimeter basically depend on the performance of the meter. The sensitivity of the meter head refers to the value of the DC current flowing through the meter head when the meter pointer is deflected at full scale. The smaller the value, the higher...
The crystal diode is a pn junction formed by a p-type semiconductor and an n-type semiconductor, and a space charge layer is formed at both sides of the interface, and a self-built electric field is built. When there is no applied voltage, the diffusion current caused by the difference of the carrier concentration on both sides of the pn junction is equal to the drift current caused by the self-built electric field and is in the electric equilibrium state. When the outside world is biased by...
The diode has a capacitive effect. Its capacitance includes a barrier capacitance CB and a diffusion capacitance CD. 1. Barrier capacitance CB(Cr) The conductive carrier is absent in the PN junction, and its conductivity is very low, which is equivalent to the medium; and the P and N regions on both sides of the PN junction have high conductivity, which is equivalent to a metal conductor. From this structure, the PN junction is equivalent to a capacitor. In fact, when a forward voltage is...
Lumics Corporation announces the LuOcean family of semiconductor lasers for pumped 铥, erbium, neodymium and ytterbium solid-state lasers and fiber lasers. LuOcean series of semiconductor lasers can output continuous laser or pulsed laser power up to 300W, the output fiber core diameter can be 300μm or 600μm. In addition, it also enables collimated free-space beam output. A key advantage of the LuOcean family of semiconductor lasers is their extremely compact size and weighs only about 400...
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Cree Inc., a market leader in silicon carbide power devices, has announced the latest Z-RecTM 650V junction Schottky Barrier (JBS) diode family to meet the latest data center power system requirements. The new JBS diode's blocking voltage is 650V, which can meet the recent data center power architecture modifications. According to industry consulting experts, this can increase energy efficiency by up to 5%. Since the data center's power consumption accounts for almost 10% of the world's annual...
Whether or not scientists are trying to solve the problem of flexibility after implanting sensors in artificial skin, the electronic circuits must all be tested by our sweat, and silicon chips obviously cannot get along well with sweat. . Today, an international research team has developed a logic circuit and sensor that are perfectly suited for water. Even more surprising is that the system does not require the participation of semiconductors at all. The researchers chose to coat organic...
On January 27, 2015, Toshiba launched the Schottky barrier diode "TRS20J120C" with a withstand voltage of +1200V and made of SiC (silicon carbide). According to the company, "With the use of SiC materials, the withstand voltage of Schottky barrier diodes up to +200V when using Si (silicon) materials is increased to +1200V." The new product can be used for AC 400V high voltage lines. For specific applications, Toshiba cited power factor correction (PFC) circuits for switching power supplies,...
A special sealing device is made by the method of disposing the dust in the radiator. This kind of device only leaves the fan through hole. Go to the construction site and construction site to collect a large amount of floating ash, place the collected floating ash and fan in a special closed device, turn on the fan to let the floating ash fill the entire special closed device, and from time to time use a diffuser to distribute the fog outside the special device Water, pay attention to control...
In order to prevent damage to the thyristor caused by the failure of the AC circuit inversion of the thyristor, the traditional method is to use a fast fuse for overcurrent protection. The advantage is that the line is simple, but the reliability is poor. The reason is that this method does not monitor whether the thyristor is in the inverter failure state, but monitors the magnitude of the current through the device for protection. It may happen that when the main circuit is just in the...
Scope and characteristics The controller is a thyristor closed-loop trigger controller of a three-phase phase-controlled rectifier. Suitable for three-phase bridge semi-control, three-phase bridge full control or double reverse star controllable rectifier circuit with balanced reactor (such as for electroplating, electrolysis, electro-oxidation, electromagnet, charging, motor excitation, etc. . Equipped with two PI regulators for voltage and current that can realize the functions of voltage...
One of the characteristics of LEDs is their low-current, low-voltage-drive power-saving features. Such features attract the attention of everyone when the world's energy resources are lacking and countries are promoting green concepts. In addition to efforts to develop new energy sources, governments around the world have also put considerable effort into improving the effectiveness of existing electrical equipment and environmental protection. While R&D is about how to reduce industrial...
Shanghai Xinzhuang Instrument Co., Ltd. develops the electric homogenizer of Xinzhuang (LNB) brand, which is energy-saving and environmentally friendly and domestically leading. Professional manufacturing is more secure and affordable. This machine uses the principle of grinding to soften the homogenization of animal and plant tissues, and obtain the cytoplasmic DY89-II electric glass homogenizer required for the experiment. The machine uses the grinding mechanism to soften the animal and plant...
0 Preface In the field of power electronics engineering, it serves a variety of electronic control devices. Where thyristors are used, they are grouped into a functional circuit as intended by the designer. For example, various single-phase, three-phase, six-phase rectifier bridges, anti-parallel lines, and parallel, series application lines of multiple thyristors, and the like. Different applications have different lines, which can be described as ever-changing and numerous. In such a power...
Probe current voltage pin 420*4450 head diameter 5.0 over current current and voltage pin Despite the emergence of power semiconductor components such as power field effect VDMOS and insulated gate bipolar transistor IGBTs, and occupying an important position in the field of power electronics technology, thyristors (thyristors) are still stable due to their high voltage and high current resistance. The position is favored by users. In the case of abandoning the current sampling, amplification...
What makes the disc shape so ideal? Disk laser technology is how to break the rod laser beam quality and inherent length limitations of the fiber? Answering these questions, one would understand how disk lasers push YAG laser technology to a new era. When it comes to diode-pumped disc lasers, many products and treatments are implicit in the word "disc." Their unique shape and the ability to solve the beam quality and transmission problems of rod lasers make disk lasers the most innovative...
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.