When a cable or its internal components experience a breakpoint failure, it is challenging to intuitively determine the exact location of the breakpoint due to the external insulation covering. Here are several methods to quickly determine the breakpoint of wires and cables: Non-Damaging Cable Method Digital Multimeter Method: First, connect one end of the faulty … Read more
Testing Transistors: 1. Testing Small Power Transistors A. Identifying Positive and Negative Electrodes (a) Observe the symbol markings on the casing. Typically, the casing of the diode is marked with the diode symbol, where the end with the triangular arrow is the positive electrode, and the other end is the negative electrode. (b) Observe the … Read more
With the rapid development of the times, the monitor market has begun to flourish, and it seems that everyone owns a monitor. However, during use, some faults may occur. How can we identify which components are problematic and how to resolve them? 1. Delay Fuse Connect the red and black probes of the multimeter to … Read more
Using a multimeter to distinguish between silicon diodes and germanium diodes The distinction between silicon diodes and germanium diodes can be made using the resistance method, as shown in Figure 6-4. Figure 6-4 Distinguishing between silicon diodes and germanium diodes The conduction voltage of silicon diodes is higher than that of germanium diodes when forward-biased, … Read more
0 Introduction In recent years, China has actively promoted the development of the vehicle networking industry. By December 2023, over 8,500 Road Side Units (RSUs) have been deployed across the country. Various sections have seen the construction and deployment of millimeter-wave radars, laser radars, cameras, and other perception facilities, as well as edge computing servers, … Read more
PCBA Process Flow The PCBA process is quite complex and typically goes through nearly 50 procedures, including circuit board manufacturing, component procurement and inspection, SMT assembly, DIP insertion, PCBA testing, programming, and packaging. Among these, the circuit board manufacturing consists of 20 to 30 procedures, making it extremely complex. The following diagram illustrates the PCBA … Read more
In the era of the Internet of Everything, IoT technology is changing our lives and work methods at an unprecedented speed. From smart homes to industrial automation, from smart transportation to remote healthcare, the presence of IoT is everywhere. Behind this, the MQTT protocol plays a key role as an important cornerstone of IoT communication. … Read more
Follow us Click on the blue text above to follow us Testing Project Information Testing Item: Myositis Antibody Spectrum Testing for 19 Items (Mi-2, Ku, PM-Scl100, PM-Scl75, Jo-1, SRP, PL-7, PL-12, EJ, Ro-52, TIF1γ, MDA5, NXP2, HMGCR, SAE, OJ, KS, ZO, HA) Medical Advice Information Advice Code: JYJYK4055, Advice Name: Myositis Antibody Spectrum Testing Advice … Read more