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目前显示的是 九月, 2020的博文

The Difference Between Bare Copper and Tinned Copper

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When designing wires and cables, Service life is one of the most important aspects of choosing the right wire for a project. What is bare copper wire: Bare copper wire refers to a copper wire drawn from a pure copper rod. Bare copper wire has no insulation layer. Bare copper wire has the characteristics of "single material, soft material, and excellent electrical conductivity". Bare copper wires are used for simple electrical connections or visible grounding wires indoors and are more commonly used in laboratories. What is tinned copper: Tinned copper is copper coated with a base alloy (preferably tin) such as solder. It sounds simple, but there is more. Copper itself has many excellent ground characteristics, so it is very popular, but it does have shortcomings. Therefore, tin-plated copper was developed, which enhanced the natural properties of copper and made it more resistant to humidity, high temperature, and humid environments. Three differences between bare copper and ...

What is the Difference Between J1939 Connector Type 1 and 2?

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  SAE J1939 (hereinafter referred to as J1939) is the recommended standard of the American Society of Automotive Engineers (SAE). It is controlled and communicated by the "Truck and Bus Electrical & Electronics Committee" (Track & Bus Electrical & Electronics Committee). Developed and written by the Track & Bus Control and Communications Network Subcommittee. J1939 has become a recognized industry standard and choice for commercial vehicle diagnostics and data communication heavy, off-highway, truck, bus, ship propulsion, power generation, industrial pumping, construction, and material handling machinery. J1939 is a high-level protocol network (CAN) based on Controller Area. It is widely used by the diesel engine industry to provide diagnostic data such as vehicle engine speed, temperature, oil temperature, exhaust emissions, and other customizable options. J1939 connectors are divided into black and green rubber cores, but do you know the difference between t...

OBD-II pin Definition

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  In order to better ensure the safety of vehicles and protect the environment. After 1996, automakers began to equip cars and trucks with OBD-II ports. Each system is basically the same, but there will be subtle changes. These are called agreements and are specific to the vehicle manufacturer. ​ The diagnostic trouble code is stored in the computer system. There are many manufacturers in the world, and the codes may be different. However, anyone with an OBD-II scanning tool can connect to the port and read the diagnostic trouble code from the computer. The reason why the OBD-II scanning tool reads the code is due to the standardized pin arrangement. The standardized pin assignments are as follows. Pin 1: Used by the manufacturer Pin 2: by SAE J1850 PWM and VPW Pin 3: For manufacturer use only Pin 4: Ground Pin 5: Ground Pin 6: CAN be used by ISO 15765-4 CAN Pin 7: K-ISO 9141-2 and ISO 14230-4 lines Pin 10: Only by SAE J1850 PWM Pin 14: by ISO 15765-4 CAN Pin 15: ISO 9141-2 and ISO...

The Difference Between OBDII 12v and 24v, usage

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  With the rapid development of the times, cars have entered everyone's field of vision. The safety of vehicles has also received more attention. When the car breaks down, the corresponding solution will be found. The OBD scanner and OBD wiring harness can be easily purchased online. After understanding the OBD wiring harness, you may not know whether your car is OBD1 or OBD2. Let me show you how to judge OBD1 and OBD2. It depends on your country or the market where the car is manufactured. Let us take the example of a car in the US market. If your vehicle was manufactured or sold in the United States in 1996, it is most likely a vehicle that meets the OBD2 standard. To determine whether your car is OBD1 or OBD2, find the year of manufacture on the white card at the driver’s side door and check the following: United States-1996            New Zealand-2006 Canada-1998              Argentina-2009 Japan-2002   ...

The Difference Between OBD1 and OBD2

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  OBD is the abbreviation of On-Board Diagnostics in English. This system is mainly to monitor the operating conditions of the car's engine, and a warning will be issued when the exhaust gas exceeds the limit during operation. When the system fails, the fault (ML) light or the Check Engine (Check Engine) warning light is on, and the powertrain control module (PCM) stores the fault information in the memory, and the fault code can be read from the PCM through a certain program. The maintenance personnel can quickly and accurately determine the nature and location of the fault according to the prompt of the fault code. ​ OBD1 is applied to cars manufactured in California to control vehicle emissions in the state, detect engine problems, and report fault codes. However, OBD1 is a standard in California. Many General Motors have problems, but they cannot be tested. OBD-1 is not standardized among manufacturers. OBD2 became a national standard in the United States in 1996, and fault cod...