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Design requirements This power supply is used in the front end of an AC voltage conversion. The input control signal is 4VAC (50HZ AC effective value range 2VAC-8VAC), and the input power is 3...[Details]
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Small pitch LED display is one of the most exposed keywords in the commercial display market in 2014. Since small pitch LED display can display higher resolution images at the same size, this p...[Details]
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This article introduces the working principle of a switch-type mobile phone charger in detail, which is very meaningful for beginners to understand the specific switching power supply circuit and char...[Details]
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1.UV LED (Ultraviolet LED): (1) Low UV: 250nm-265nm-285nm-365nm, and now it can reach 250nm-410nm. These are INGaN/GaN material carbides. These UV rays can kill all bacteria in the water, and the...[Details]
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The USB interface has the characteristics of high transmission rate, small size, and external power supply, so it is very convenient to connect and use computers with external hardware devices. A...[Details]
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Infineon Technologies AG and Panasonic Corporation have signed an agreement to jointly develop and produce
the second generation (Gen2) of mature gallium nitride (GaN) technology
, providi...[Details]
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As shown in the figure above, the op amp has two input terminals a, b and an output terminal o. They are also called the inverting input terminal (inverting input terminal), the non-inverting input...[Details]
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Solid-state lighting (SSL) or light-emitting diode (LED) lighting is the obvious replacement for incandescent and FL/CFL lighting, driven by government regulations, high efficiency, long life, and ...[Details]
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In order to claim the high
luminous efficiency
of their products,
many domestic
LED street light
manufacturers
often divide the initial luminous flux of the chip by the power consum...[Details]
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2-1-1-1. Magnetization of the core of a single-excitation switching power supply transformer by pulse train
For the sake of simplicity, we equate the single-excitation transformer switchin...[Details]
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1. Common faults of voltage transformer For voltage transformers, the most common fault is that the core through-bolts are suspended in potential and discharged during operation due to unreasona...[Details]
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1 Basic working principle of LED power supply The BUCK converter and IPD control are used to realize the switching power supply, output constant current and voltage, and drive the LED lamp. The over...[Details]
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Smart meters are smart terminals of smart grids. In addition to the basic electricity metering function of traditional energy meters, in order to adapt to the use of smart grids and new energy, the...[Details]
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Power socket boxes are installed in different locations in each room of the home for various electrical appliances. The nominal capacity is 10A and 16A, and the appearance is shown in Figure 1 (Fig...[Details]
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Overview: The frequencies involved in electromagnetic compatibility measurement include all radio wave propagation characteristics such as surface waves, reflected waves, and linear propagation. Rad...[Details]