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Basic uses of copper clad laminate Copper clad laminate (CCL) is a kind of board made of wood pulp paper or glass fiber cloth as reinforcing material, soaked in resin, covered with copper foil on one side or both sides, and hot pressed. Copper clad laminate (CCL) is the basic material of electronic industry. It […]

There are several treatment processes for the surface of LED circuit board: smooth board (without any treatment on the surface), rosin board, OSP (organic solder protective agent, slightly better than rosin), tin spraying (lead-tin and lead-free tin), gold-plated board, gold-deposited board, etc. These are more noticeable. Difference between gold deposition process and gold plating process […]

The basic steps of led manufacturing: welding-self-inspection-mutual inspection-cleaning-rubbing. Here’s a small series to give you a detailed introduction. 1. welding of led circuit board ① Judging the direction of the lamp: the front is facing upwards, and the side where the black rectangle is located is the negative end; ② The direction of the circuit […]

Radio frequency circuit (RF) is called “black art” because of many uncertain factors. However, through practice and exploration, we will find that there are rules to follow. Based on our many years’ working practice and previous experience, we will discuss the circuit board design of RF circuit around these aspects: layout, impedance, lamination, design considerations, […]

The order of wiring design of printed circuit boards in the factory may be different. Before the wiring designer in the factory prepares to design the wiring, it should be clearly specified in his circuit design rules. Today, the circuit board factory tells you the order of wiring design. It is the responsibility of the […]

USB3.0 can provide a data rate of up to 5Gbps, which is ten times faster than high-speed USB(USB2.0) and has improved power efficiency. At this high transmission speed, the signal integrity problem restricts the PCB routing and wiring length and its design and implementation function more and more strictly. Poor signal quality may seriously affect […]

Loongson (English: Loongson, formerly known as GODSON) is a general CPU designed by Hu Weiwu, Institute of Computing Technology, Chinese Academy of Sciences, etc. It adopts MIPS and LoongISA® reduced instruction set architecture, and buys out the MIPS instruction set patent. Godson-1 series are embedded domain chips, which have been used by many enterprises. The […]

1. Brief introduction, blind holes and embedded fillers are mainly made of high-density and small microplates. Purpose depends on saving circuit space, so as to reduce PCB volume, such as mobile phone board. Second, classification: 1). Laser drilling, 1. the reason for drilling with laser: a. customer data requires drilling with laser; B because the […]

Loongson Zhongke released ——2K1000, the smallest industrial system solution produced in China, which is suitable for application scenarios such as Internet of Things and independent controllable industrial security system. In this scheme, the domestic Godson 2K1000 processor is adopted, the surface-mounted DDR3 2GB domestic memory is used, the maximum surface-mounted 2GB NAND FLASH is stored, […]

The introduction of Loongson 3A2000 processor, which is “Loongson 3A3000/3B3000 is the latest upgraded product of Loongson 3 series processors. Based on the design of Loongson 3A2000, Loongson 3A3000 has made a few structural improvements, such as increasing the number of key queue entries of processor cores, expanding on-chip private/shared cache capacity, etc., which is […]