Everyone at some point have had the idea to make a better gadget or device that is already on the market, and some not create circuits start if only to learn how electronics work.
The design process is quite simple and similar to many other project structures.
Determining the task to be accomplished: Because each circuit is created for a purpose, whether educational, entertainment or practical, purpose designed circuit that is the first thing you have to ship TBD. Depending on the complexity of the task, the project can be subdivided into individual functions that work together to accomplish this task.
Selecting components: Now that you have discovered the functionality, it’s time to pick the right and the components needed to build the circuit. At this time is still in the design stage, no components are purchased for the moment, only the particulars datasheets and component specifications to design the circuit or subcircuit. This step is critical because all tolerances and characteristics of the project work should be considered. Does the circuit is used in heat? Do you expect to resist mechanical stress (as in the fall, tremors, etc)? The chosen components have to fit these features and also the electrical needs of the project, such as power consumption, if the circuit is being powered by battery are an important design issue.
Design Scheme: At this stage, the electronic circuits are designed with corresponding schematic diagrams. This documentation is used as a guide for implementation, since the design scheme is ultimately became a real circuit board. This is one of the most difficult steps in electronics design, since many types of analysis should be made to the circuit to function as intended. All reviews require a certain level of expertise and experience, and sometimes even with all the correct analysis, the experience can help you find situations that could potentially cause damage or cause malfunction of the circuit.
Design of the circuit board: Now that the functional part of the circuit has been designed and shown to the scheme, the next step is to design the circuit board in which the actual components are soldered. There are many automated circuit boards to create a schema tools. Design Manual is very difficult, and large projects with many components that could become an almost impossible task, especially if space is a problem.
Prototyping, testing and corrections: Another very important aspect of the circuit design is prototyping and testing. Analysis and simulation sometimes gives erroneous or inaccurate due to outside circumstances that may have been overlooked during the analysis as mains hum, RF interference or other events created inside the circuit, such as thermal noise, inductive and the capacitive coupling and many others. Prototyping and testing to find all these hidden features of the circuit, in order to incorporate into the design before mass production. This helps reduce costs because it is easier to dispose of an unsuccessful prototype of what is to remove an entire shipment can contain up to millions of units.
All steps can be revised as needed, since the function or characteristics of the circuit can be changed in the middle of the design, or the proposed design is too complex or could have a lot of money or time to create or design.