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The principle of single chip microcomputer control relay
As an old industrial city, there are not many enterprises in embedded development and design of single chip computer in Zigong. Here we introduce the principle of single chip computer controlling relay. First, we look at the typical relay driving circuit diagram of relay. Such a diagram can be found everywhere on the network, and the circuit diagram of single chip computer in standard textbooks is generally a weak relay device. Most of them work at 5V or even lower. The driving current is below the mA level. It is obviously not feasible to use it in some high-power situations, such as controlling the motor. Therefore, there must be a link to link up, this link is just the same.
2019-03-23
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Single-sided, double-sided, multi-layer printed circuit board PCB
Printed Circuit Board, PCB abbreviated as printed circuit board, is an important basic component in electronic products. It is widely used in consumer electronics, automotive electronics, industrial automation control, communication equipment, military electronic equipment and aviation, and aerospace electronic systems. Etc., printed boards can be used in almost all electronic products. The design and manufacturing quality of PCB directly affects the quality and cost of electronic assembly process and electronic whole machine products, and sometimes becomes the key to affect the quality of electronic product systems. Therefore, it has received extensive attention from the electronics industry at home and abroad.
2019-03-13
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Mechanical time relay principle
There are many different types of relays. Time relays are one of the more common types. They use time setting to control the electrical components of the circuit that turn on or off the voltage and current. When the relay working coil is driven to give a control current, the relay will pick up. Its contacts will be turned on or off. In control circuits, relays are often referred to as contactors. Mechanical time relay time relays are widely used in electronic equipment such as remote control, communication, automatic control, etc., and are the most important control components. Commonly used time relays are mainly air damping type, electric type and electronic type. Time relays are also widely used in production equipment.
2019-02-19
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Zigong Pavilion simulates dinosaurs and lanterns
The 17th Western Expo opened. The Zigong Exhibition Hall at Hall N201 in Hall 2 of the Western International Expo City Exhibition Center was unveiled. At the same time, the city set up a 432-square-meter Zigong City publicity advertisement for the first time in the advertising space of the curtain wall of Hall 3. Seen at the scene, you can see the Zigong Pavilion, which is surrounded by white bases and beautiful ribbons. You can see the modern style of simplicity, light and color, and compatibility. The theme slogan “Building a National Demonstration Zone for the Transformation and Upgrading of Old Industrial Cities” and “Building a National Cultural Export Base” is striking.
2019-02-11
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![PCB circuit board process]()
PCB circuit board process
The circuit board is divided into single panel, double panel, multi-layer PCB board, especially in the BGA package of the circuit board. The requirements for the via hole of the BGA package must be flat, the convex and concave are plus or minus 1 mil, and the edge of the via hole is not red tinned; Through-hole Tibetan tin beads, in order to meet customer requirements, the via hole plugging process can be described as various, the process is particularly long, the process control is difficult, often in the hot air leveling and green oil soldering resistance test oil drop; And so on.
2019-01-15
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![How to design a multi-layer board Protel DXP]()
How to design a multi-layer board Protel DXP
In the circuit board PCB drawing design, it is necessary to arrange and position the fixed component positions, and to properly connect the pins of each electronic device. It is very important for the designer to perform each step, because its quality has a great influence on the anti-interference ability of the product. Large and decisive for the performance of the product. Nowadays, electronic technology is developing rapidly, and the technical indicators required in various electronic products are getting higher and higher, such as embedded development, microcontroller development and design, and motor drivers.
2018-11-01
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![PADS 9.5 installation download]()
PADS 9.5 installation download
A good electronic circuit design software will be a tool for electronic engineers. The commonly used circuit board design software in China includes altium designer, Mentor PADS, etc. PADS is a very classic PCB design software, which was launched by Mentor Graphics. A professional schematic and PCB design tool, mainly used by various circuit design engineers and technicians.
2018-09-20
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"Dinosaur Resurrection": Dinosaur Skeleton
Dinosaurs "resurrection" originated from ancient dinosaurs. Although they were extinct for a long time, they used modern science and technology to successfully replicate the simulated dinosaur models, dinosaur specimens, and "live dinosaurs" that would move their voices. Zigong City, Sichuan Province is the largest and world-famous research and development base for simulated dinosaurs and simulated animals. Zigong City is a world-famous dinosaur town. The simulated dinosaurs and other artificial animal models produced here are exported to the world. In the technology research and development of the “Resurrection” simulation dinosaur, the Zigong industry has invested a large number of scientific research personnel, production and production personnel and research and development funds, combined with archaeology, paleontology, geology and other majors.
2018-05-06
