By N Ahlhelm
An creation to excessive Reliability Soldering and Circuit Board fix» introduces the beginner technician to soldering and board fix. very little past wisdom of electronics is needed to make potent use of this booklet. The publication is written as a 1st semester direction in electronics. easy instruments are used up to attainable. Wires, splicing recommendations, sorts of solders and fluxes, jumper cord, and instruments are coated. The deploy and removing of through-hole and floor mount elements besides criteria are offered. The learner can be provided with numerous concepts to fix unmarried and double-sided published circuit forums. This version comprises metric measurements
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Additional resources for An Introduction to High Reliability Soldering and Circuit Board Repair
Example text
They crimp onto the wire’s insulation as well as the conductor. You can see the wings that will be crimped onto insulation and wire in Figure 2-28. A crimper designed for Molex pins must be used to connect pin to wire. Many crimp/pin sizes are available. Therefore, you must chose not only the right pin for the job but also the correct size of dies for the crimp tool. Some tools have dies that can be changed to suit the crimp. Others, such as the one in the picture, have fixed dies. Some of these tools are like a pair of modified pliers while others are a little more complex.
Now move the crimp to A and crimp the wire once again. This completes the connection. An example of a Molex pin properly crimped to a wire is shown in Figure 2-31. All that remains is to insert the pin into the molded housing. Figure 2-31 RJ45 Plugs and Jacks The housings, just like the pins, come in male and female styles. The housing in Figure 2-27 is a female type. Female plugs will have male pins; male plugs have female pins. The holes in the plugs are also numbered and/or lettered. This aids in getting the correct wire into the correct slot and this helps prevent cross-connecting wires.
Figure 2-11c Quality splices can be achieved using crimping tools. However, the quality of a splice is now more dependent on tools and supplies than on your skills alone. The first critical element is the type of splice you are going to use. The image (Figure 2-12) below shows two common butt splices. The one on the left is a high-grade splice suitable for use in aviation. The splice shown to the right should be avoided if possible. The arrow points to a small ridge on the quality splice. The crimping tool will compress this ridge and force it onto the insulation, holding the crimp securely in place.