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Monday 26 June 2017
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Printed Circuit Boards How Modern Technology Advances Through the Ages

Prototype pcb

Technology seems to follow a trend as things slowly begin shrinking: cell phones, modern computers, and robotics are all getting smarter thanks to more advanced forms of electronics. This is thanks in large part to modern circuit boards which can be found in remote controls, children’s toys, and cell phones. The exact function of the device in question may vary, but a circuit board is an essential and fairly direct asset: here are some ways that the field has developed over the past few decades.

What Makes Up a Circuit Board

Modern circuit boards may seem complex to the uninitiated, but it is essentially no more than a highway for electric currents lined with pit stops like resistors, capacitors, and active circuits. Most firm circuit boards start with a green layer which is composed of a liquefied photo image-able polymer that solidifies to form the sturdy green backing most of us are familiar with; some models of circuit boards can be made with a more flexible material, opening up a new world of possibilities for prototype printed circuit board applications. Beneath the green layer is a conductive layer of copper that connects the circuit electronically, this is the signal component that allows the circuit to function; think of this as the asphalt on the electric highway. There is typically another green layer underneath the copper layer with a silicone-based insulator layer between the two.

Modern PCB Fabrication

Components are attached to printed circuit boards (PCBs) in two ways: the older method uses “through hole technology” whereby the capacitors, active circuits, and other components are mounted through pre-punched holes in the circuit board; the newer method is “surface mount technology” that allows the components to be directly soldered to the circuit board. In both cases, the components are connected to each other through the circuitry interconnections etched directly into the copper layer; multiple copper layers are used for more complex circuits. Assembling a prototype printed circuit board is easy thanks to the printing of a legend directly on the PCB which helps to designate which components go where, where test points are located, and the appropriate settings for switches; there are typically three methods used to print these legends including silk screen printing, liquid photo imaging, and ink jet printing.

Creating a Prototype Printed Circuit Board for Your Needs

Technology adapts to one’s imagination: this is the sentiment that lead to a number of breakthroughs in technology all to advance a single concept. Due to the symbiotic nature of technology in our modern era, circuit board prototyping too is helping to advance modern technology. Prototype printed circuit boards each have to be carefully made according to their intended use as it must be the right size to fit a required space; thankfully this isn’t too much of an issue with smaller and smaller components being released each year. The actual design of prototype PCBs varies based on application as well, these can include single-sided circuit boards, double-sided circuit boards, and multi-layered circuit boards; even from here there may be applications for an integrated circuit or a hybrid circuit depending on individual needs. The very technique by which components can be soldered to the circuit board varies as well: surface mounted circuit boards use a specialized placement machine that utilizes bulk wave soldering, yet this precision can also be achieved with the aid of skilled technicians who are able to solder pieces that are as small as 0.02 inches by 0.01 inches. Whatever technological needs you are in need of, count on the dynamic field of contemporary printed circuit boards to piece everything together as it should be.




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