Everyone at some point experienced the thought of creating a better gadget or device than what is on the market, and some do start creating circuits if only just to find out how electronics work.
The design process is fairly easy and much like many other project structures.
Determining the job to be accomplished: Since every circuit is made for any purpose, be it educational, entertainment or practical, the purpose of the circuit to be designed will be the first thing that should e determined. Based on the complexity with the task, the project may be subdivided into individual functions that will come together to accomplish said task.
Selecting components: Now that you've got the functionality figured out, it's time to pick the right and necessary components to construct the circuit. At this time will still be in the design stage, no components are ordered as of this time, merely the datasheets and specifications of the components are required to design the circuit or subcircuit. This task is important, since every one of the tolerances and characteristics of the working project must be considered. Will the circuit be used in heat? Could it be anticipated to resist mechanical stress (as in falling, shaking, etc)? The ingredients chosen need to fit strikes along with the electrical needs from the project, for example current draw, which when the circuit will be powered by batteries is really a major design issue.
Schematic Design: In this stage the electronic circuits are made making use of their corresponding schematic diagrams. This is used as documentation along with a guide for implementation, because the design within the schematic may be the the one that will ultimately will be changed to a real circuit board. This really is just about the most challenging steps of electronics design, because so many types of analysis should be made for the circuit to operate as intended. Those analysis need a certain level of technical experience and knowledge since sometimes even with all analysis correct, experience will help you find situations that could potentially damage or result in the circuit malfunction.
Circuit Board Design: Now that the running part the circuit may be designed and represented using the schematic, the next thing is to create the circuit board the location where the actual components will probably be soldered. There are many automated tools to produce circuit boards with a schematic. Manual design is quite difficult, along with big projects with many components it might turn into a nearly impossible task, particularly when space is an issue.
Prototyping, Testing and Corrections: Another essential facet of pcb design
is prototyping and testing. Analysis and simulation sometimes gives erroneous or inaccurate because of external circumstances that may have been overlook during analysis such as mains hum, RF interference or other events created in the circuit including thermal noise, inductive and capacitive coupling and others. Prototyping and testing lets you find dozens of hidden characteristics from the circuit, in order to incorporate within the design before massive production. All this helps in reducing costs because it is much easier to discard one unsuccessful prototype compared to to withdraw a complete shipment which could contain up to countless units.
All the steps can be revisited as required, considering that the function or characteristics of the circuit may alteration of the midst of the design, or the proposed design is a lot too complex or would require a lot of cash or time for you to create or design.