Monthly Archives: February 2016

PCB Designing Role in Its Fabrication

PCB fabrication may seem simple, but it isn’t always the case. One thing that should not be overlooked is the accuracy in the manufacturing process, which is a major role of the designing process of PCB’s. The design should be exactly pictured and made according to the client’s specifications. These board specifications include the number of layers, the type of materials, the dimensions, and the number and circumference of holes. These are all put in a design, and a single mistake will make a nonfunctional or rejected PCB.

Designing and prototyping of the schematics are the initial steps in PCB fabrication.

These are the key steps to produce or prevent inaccuracies in the further stages of producing PCBs. During the initial phase, to create a physical version of the electronic schematic, a net list file is necessary. The sketch version or layout details are transferred to a Gerber, which is still commonly used, however there are other available EDA – Electronic Design Automation software tools.

Pcb fabricationGerber file format isn’t that accurate as some poor manufacturers perceive, but this format is the foundation in manufacturing PCBs. The Gerber file contains alphanumeric characters and symbols. The new standard for Gerber files allows just one file to contain the majority of information, while the old standard requires more than a single file for containing the information for a layer. The advantage of the new standard over the old standard is that a single file is easy to keep track with than two or more files.

Gerber files’ instructions are used in the configuration parameters such that their codes include the suitable and desired geometry in the PCB fabrication process. They also include the specifications about the polygon fills, line widths, complex shapes, lettering and other parameters. Gerber files make possible the generation of codes, which have corresponding results in the physical layout of PCB’s.

Gerber files are not just limited to codes but they also show an image of the copper’s location on a layer, of where it should be. Gerber files also show images of where the solder mask and screen paint should be applied. They also contain information about the size, locations and properties of holes, which are in the form of codes. Excellon is another computer program that can help further with the layout concerning the specific drilling and routing places on the board.

Gerber files include the layouts of the top, bottom, silkscreen top, drill and board outline layer. Basically a Gerber file defines what needs to be done on each layer, including milling, drilling and cutting the layer of the board. However, the CAM technicians must continuously update the computer system so that there will be no discrepancies between the designing and manufacturing process in PCB fabrication.

After Gerber files are checked, along with the machine for prototyping, they are used for the creation of the PCB substrate. As part of completing the board, components are soldered into place. It is important that all traces are routed.

There are differences among the PCB manufacturers regarding the various processes that involve the designing and prototyping of PCB’s. Some have more advanced PCB software and a checklist online in which the client has the direct access to input the specifications and quantities of the PCB they need. The check file can be loaded directly to the design software. Other manufacturers use EAGLE or Easily Applicable Graphic Layout Editor, which is easier to use because of its schematic capture and PCB layout editor. There is a variety of free software that the manufacturers can choose from to assure them of ease during the initial phases of the PCB fabrication process.

Custom Patches as a form of identification

Custom made embroidered patches no longer serve only as fabric designs. Today they are used for many other purposes aside from military identification. Patches are now being created by embroidering companies in order to serve identification purposes for many different organizations, such as for motorcycle clubs, public servants, schools, and many other groups. Many businesses have taken advantage of the fact that many organizations are now requiring the production of these new versions of IDs in bulk and have decided to offer their services to those who need them.

patches

Originally, embroidered patches were used by the military in order to make it easier for them to identify which men were theirs and which were not. This proved to be very effective in the United States army, and soon it became a generally used form of identification in the military forces of other countries, such as in Europe and in South America.

The patch designs normally varied depending on the position of the person with the patch in the military.

In addition, aside from denoting someone’s military rank, the patch was also used to denote the mission that the soldier was undertaking.
Other government organizations with the same structure used these embroideries for their own purposes, such as the fire department and the police force.

Eventually, these Patches caught the attention of the everyday people, and they realized that they too can use these embroideries for their own purposes. Soon, not only the military was making use of these for their identification needs, but families, church groups, small companies, and even simple events were being marked through these embroideries.

Athletes also use the embroidered patch in order to identify the team they belonged to. Usually these would be sewn into either clothing or apparel such as caps, jackets, or jerseys.

Embroidered patches have also been part of motorcycle club member gears around the world. The embroideries would be found on the back of the jackets of each member to signify which group they belong to. The designs not only incorporate the actual logo of each group, but sometimes they also incorporate other elements such as the symbolic meaning of the group. They also create a patch in commemoration to their fallen comrades and to certain festivities such as Bike Week where they also put political commentaries in their patch designs.

Probably one of the most notable uses of the custom embroidered patch is with the uniform of the Boy Scouts, Brownies, Cub Scouts, and Girl Scouts. A patch is given to members in order to signify their accomplishments or achievements in various fields such as arts and crafts, science, academics, charity work, or any outdoor events.

As for the business sector, they use custom embroidered patch in order to promote their products and services. Usually, companies would order the creation of a custom patch which bears the logo of the company, in order to help identify the people who work for the company to members of the public and specifically to their target customers.

With the many uses of the embroidered patch ranging from the military to the business sector, it is obvious that many businesses would find the patch industry to be a great way to make money. Business which offer patch making services have sprung up everywhere since the realization that these embroideries can be used by people outside of the military for their own specific purposes. These business establishments offer clients fast and convenient order placing, while at the same time, provide them with high quality products. Many of these companies even offer doing business online, which makes it even more convenient for their clients.