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By YvetteIn today’s world, designers seem to be on a never-ending quest for greater efficiency. We want more power out with less power in! Higher system efficiency is a team effort that includes (bu...[Details]
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1. Project Overview 1.1 Introduction For image monitoring systems, users often have such requirements in some special applications: they hope to monitor objects wirelessly. For example, disaste...[Details]
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1 Overview Since the 20th century, my country's coal mines have begun to use a large number of 127V lighting power supplies and their comprehensive protection devices. So far, the lighting equipm...[Details]
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At present, China's switching power supplies account for 80% of the world market, but we have almost no share in the high-end market. my country is currently short of energy, and the power supply ind...[Details]
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The switching power supply of LCD color TV is mainly composed of AC anti-interference circuit, rectifier filter circuit, PFC circuit and main and auxiliary switching power supply circuits, as sho...[Details]
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LEDs have poor surge resistance, especially reverse voltage resistance, so it is essential to strengthen protection in this area. In view of this, this article introduces a PFC switching power supp...[Details]
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The output ripple of the switching power supply mainly comes from five aspects: input low-frequency ripple , high-frequency ripple , common-mode ripple noise caused by parasitic parameters...[Details]
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Many switching power supply chips use the formula Vout=(1+R1/R2)Vref to set the output voltage (Vref is the reference voltage, R1 and R2 are sampling resistors , and R2 is grounded). As shown in Figu...[Details]
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1. It has a wide viewing angle. For surface-mounted display, it has a viewing angle of more than 110 degrees in the horizontal direction and the same performance in the vertical direction. In many ...[Details]
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This article describes a method for alleviating the cost issues of high-voltage isoSPI systems by using AC coupling, which eliminates the need for double insulation of the magnetic components. Co...[Details]
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This article introduces a high-reliability photoelectric switch (photoelectric sensor) circuit with stable frequency modulated light to resist various interferences, with high-power drive circuit a...[Details]
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Buck-boost circuit The working principle process is as follows: (1) When the controllable switch V is in the on state, the power source E supplies power to the inductor L through the controll...[Details]
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LCD display module: LCD liquid crystal display is an extremely low power display device with small operating current, light weight, low power consumption, long life, clear and beautiful writing. It i...[Details]
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Many electronics enthusiasts have this experience: although mid-range and high-end digital multimeters have capacitance test gears, the measurement range is generally only 1pF~20µF, which often can...[Details]
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Common rechargeable batteries include nickel-metal hydride batteries, nickel-cadmium batteries, lithium batteries and polymer batteries. Among them, lithium batteries are widely used due to their h...[Details]
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