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LED (Light Emitting Diode) has high photoelectric conversion efficiency. Its basic structure is an electroluminescent semiconductor crystal placed on a lead frame, and then sealed with epoxy resin ...[Details]

Today, iQOO 9 will be officially launched at 10 am. The price of 8GB+256GB is 3999 yuan, the price of 12GB+256GB is 4399 yuan, and the price of 12GB+512GB is 4799 yuan. There are three color schemes ...[Details]

       High refresh rate has become a major trend in the Android camp, and mid-to-high-end and even some thousand-yuan phones support high refresh rate. 　　Currently, there are three main types of hig...[Details]

The input circuit of the switching power supply mostly adopts a capacitor filter type rectifier circuit. At the moment of the incoming power supply closing, since the initial voltage on the capacit...[Details]

　　A constant current source is a power source that can provide a constant current to a load. Therefore, the application range of a constant current source is very wide and it is indispensable in many...[Details]

ATX power supply reference design circuit diagram Figure 1. Simplified block diagram of the ATX power supply reference design Figure 2. 255W ATX power supply refer...[Details]

        In addition to being a year of rapid development of 5G, 2020 is also a year of rapid development of GaN chargers. So far, many manufacturers have released their own GaN chargers, and the futu...[Details]

1. Basic concepts of LED circuits LED (Light-Emitting-Diode) is a semiconductor that can convert electrical energy into visible light. It changes the principle of tungsten filament light emission of ...[Details]

Due to cost, space and other issues, 5G base stations need to be deployed on top of existing sites. The coexistence of 2/3/4/5G equipment results in insufficient antenna space, which is a common prob...[Details]

The latest research from Strategy Analytics’ Connected Home Devices service suggests that 8K TVs will be a moderate success in the next few years. The research report will be released at the same tim...[Details]

1. Basic principles of selection At present, there is no unified standard for motor protection products on the market, and the models and specifications are varied. In order to meet the differ...[Details]

The control chip is the commonly used HD61202 column driver and HD61203 row driver.      A Chinese character is composed of 16*16 pixels.   The scanning order is up and down, then to the se...[Details]

Before downloading Uboot, you need to prepare the following: 1. USB download cable and serial port cable for serial port output information and program download, 2. Compiled mini2440uboot.bin. Befo...[Details]

We recommend using the following output current function to calculate power loss: The next step is to take the simple expression above and put it into the efficiency equation: ...[Details]

This is a real-time digital clock made with AT89C405l microcontroller. Due to the use of AT89C405l, this digital clock is very low cost and small in size. It can be made into a small module and is ve...[Details]