Testing and Function of Braided Tubes Braided tubes are made from durable, eco-friendly PET monofilament fibers, offering excellent stretchability, abrasion resistance, flame retardancy, and elasticity. These properties make them ideal for a wide range of applications, especially in electronic components. As one of the fundamental elements in semiconductor technology, braided tubes play a crucial role in current amplification and are essential parts of electronic circuits. In China, there are various types of crystal braided tubes, each with different pin configurations. When using a braided tube with an unclear pin layout, it's important to determine the correct position of each pin or refer to the transistor manual for detailed information on its characteristics, technical specifications, and parameters. For reverse characteristic testing, connect the red probe of the multimeter to the positive terminal of the braided tube and the black probe to the negative terminal. If the needle points to infinity or is very close to it, the tube is considered qualified. During forward characteristic testing, place the black probe (which acts as the positive electrode) on the positive terminal of the braided tube, and the red probe (acting as the negative electrode) on the negative terminal. If the needle doesn’t move to zero but stops in the middle of the scale, the resistance at that point is the forward resistance. The lower the forward resistance, the better. A forward resistance of zero indicates a short circuit, while a resistance close to infinity suggests an open circuit. Both conditions mean the tube is damaged and should not be used. As a switching element, the braided tube exhibits low resistance under forward voltage, allowing it to conduct electricity—similar to a closed switch. Under reverse voltage, the resistance becomes very high, effectively turning it off, like an open switch. This switching behavior enables the creation of various logic circuits. When testing a braided tube, you can also use a radio to detect its functionality. Additionally, variable-capacity braided tubes are commonly used in TV tuners. As a limiting element, the braided tube maintains a nearly constant forward voltage drop (0.7V for silicon tubes and 0.3V for germanium tubes). This feature is utilized in circuits to limit signal amplitude within a specific range. In power supplies and relay systems, braided tubes act as inductive elements, helping to control current flow and protect sensitive components. Whether used in switching, limiting, or filtering applications, braided tubes remain a vital part of modern electronics. For more information, visit our website: http://...
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