☞ This is the 8109th article published by Metal Processing (mw1950pub) Introduction If you have a circuit board, how can you disassemble and reuse it? Today, our video will detail the N methods for disassembling circuit boards, truly expanding your knowledge! The video length is 2 minutes and 44 seconds, recommended to watch on WiFi … Read more
In working circuit boards, there are many components that generate significant heat, such as MOSFETs, LEDs, and transistors, especially under full load conditions. Heat dissipation vias are a well-known method for dissipating heat through surface-mounted components on circuit boards. Structurally, a via is drilled into the board, and if the board is a single-layer or … Read more
To properly place SMT components, the PCB must remain completely flat. For accurate placement, the pick-and-place machine must release the SMT components at the same height above the circuit board for all components. If the PCB is warped, meaning it is not flat, the machine cannot maintain a constant height when placing components on the … Read more
Click the blue text above to follow PCB knowledge As we all know, there are many silkscreen letters on PCB boards, such as R107, D202, C118, etc. There are also many other dense combinations of letters that may leave beginners feeling confused. However, excellent electronic engineers can instantly recognize what these letters represent. If you … Read more
Action cameras refer to compact imaging devices that can shoot videos and photos while possessing certain waterproof, shockproof, and dustproof characteristics. If you still don’t understand, you can think of them as a camera, as a large portion of these products do not come with an LCD screen, requiring the use of other devices for … Read more
01. Correct Use of the Multimeter To use the multimeter correctly, familiarize yourself with the dial. Adjust the two zero position regulators gently. Choose the correct binding posts, and insert the red and black probes into the correct holes. Turn the switch to the correct position; ensure the range is set appropriately for accurate readings. … Read more
A bidirectional thyristor (also known as a bidirectional silicon controlled rectifier) is a semiconductor device that can conduct in both directions, widely used in power control and conversion circuits. To ensure its normal operation and performance, it is necessary to measure it using a multimeter. This article will detail how to use a multimeter to … 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