Circuit design
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The process of circuit design can cover systems ranging from complex
Process
Traditional circuit design usually involves several stages. Sometimes, a
A breadboard or other prototype version of the design for testing against specification may be built. It may involve making any alterations to the circuit to achieve compliance. A choice as to a method of construction and all the parts and materials to be used must be made. There is a presentation of component and layout information to draughtspersons and layout and mechanical engineers for prototype production. This is followed by the testing or type-testing several prototypes to ensure compliance with customer requirements. Usually, there is a signing and approval of the final manufacturing drawings, and there may be post-design services (obsolescence of components, etc.).
Specification
The process of circuit design begins with the
As the design process progresses, the designer(s) will frequently return to the specification and alter it to take account of the progress of the design. This can involve tightening specifications that the customer has supplied and adding tests that the circuit must pass to be accepted. These additional specifications will often be used in the verification of a design. Changes that conflict with or modify the customer's original specifications will almost always have to be approved by the customer before they can be acted upon.
Correctly identifying the customer needs can avoid a condition known as 'design creep', which occurs in the absence of realistic initial expectations, and later by failing to communicate fully with the client during the design process. It can be defined in terms of its results; "at one extreme is a circuit with more functionality than necessary, and at the other is a circuit having an incorrect functionality".[4][who?] Nevertheless, some changes can be expected. It is good practice to keep options open for as long as possible because it's easier to remove spare elements from the circuit later on than it is to put them in.
Design
The design process involves moving from the specification at the start to a plan that contains all the information needed to be physically constructed at the end; this happens typically by passing through several stages, although in the straightforward circuit, it may be done in a single step.
Each block is then considered in more detail, still at an abstract stage, but with a lot more focus on the details of the electrical functions to be provided. At this or later stages, it is common to require a large amount of research or
Finally, the individual circuit components are chosen to carry out each function in the overall design; at this stage, the physical layout and electrical connections of each component are also decided, this layout commonly taking the form of artwork for the production of a printed circuit board or Integrated circuit. This stage is typically highly time-consuming because of the vast array of choices available. A practical constraint on the design at this stage is standardization;. At the same time, a certain value of a component may be calculated for use in some location in a circuit; if that value cannot be purchased from a supplier, then the problem has still not been solved. To avoid this, a certain amount of 'catalog engineering' can be applied to solve the more mundane tasks within an overall design.
One area of rapid technology development is in the field of nanoelectronic circuit design.[8]
Costs
Generally, the cost of designing circuits is directly tied to the final circuits' complexity. The greater the complexity (quantity of components and design novelty), the more hours of a skilled engineer's time will be necessary to create a functional product. The process can be tedious, as minute details or features could take any amount of time, materials and manpower to create. Like taking into account the effects of modifying transistor sizes or codecs.[9] In the world of flexible electronics, replacing the, widely used, polyimide substrates with materials like PEN or PET to produce flexible electronics, could reduce costs by factors of 5-10.[10]
Costs for designing a circuit are almost always far higher than production costs per unit, as the cost of production and function of the circuit depends greatly on the design of the circuit.[11]
Although the typical PCB production methods involve subtractive manufacturing, there are methods that use an additive manufacturing process, such as using a 3D printer to "print" a PCB. This method is thought to cost less than additive manufacturing and eliminates the need for waste management altogether.[12]
Verification and testing
Once a circuit has been designed, it must be both verified and tested. Verification is the process of going through each stage of a design and ensuring that it will do what the specification requires it to do. This is frequently a highly mathematical process and can involve large-scale computer simulations of the design. In any complicated design, it is very likely that problems will be found at this stage and may affect a large amount of the design work to be redone to fix them.
Testing is the real-world counterpart to verification; testing involves physically building at least a prototype of the design and then (in combination with the test procedures in the specification or added to it) checking the circuit does what it was designed to.
Design Software
In the Software of the visual DSD, the Logic Circuit of complement circuit is implemented by the compiling program code. These types of software programs are creating cheaper more efficient circuits for all types of circuits.[13] We have implemented functional simulations to verify logic functions corresponding to logic expressions in our proposed circuits. The proposed architectures are modeled in VHDL language. Using this language will create more efficient circuits that will not only be cheaper but last longer. These are only two of many design software that help individuals plan there circuits for production.[14]
Prototyping
Prototyping plays a significant role in the complex process of circuit design. This iterative process involves continuous refinement and correction of errors. The task of circuit design is demanding and requires meticulous attention to detail to avoid errors. Circuit designers are required to conduct multiple tests to ensure the efficiency and safety of their designs before they are deemed suitable for consumer use.[15]
Prototyping is an integral part of electrical work due to its precise and meticulous nature. The absence of prototyping could potentially lead to errors in the final product. Circuit designers, who are compensated for their expertise in creating electrical circuits, bear the responsibility of ensuring the safety of consumers who purchase and use these circuits at home.
The risks associated with neglecting the prototyping process and releasing a flawed electrical circuit are significant. These risks include the potential for fires and overheated wires, which could result in burns or severe injuries to unsuspecting individuals.[15]
Results
Every electrical circuit starts with a circuit board simulator of how the things will be put together at the end of the day and show how the circuit will work virtually.[16] A blueprint is the drawing of the technical design and final product. After all, this is done, and you use the blueprint to put the circuit together, you will get the results of electrical circuits that are quite memorable. The circuit will run anything from a vacuum to a big TV in a movie theater. All of these take a long time and a certain skill not everyone can acquire. The electrical circuit is something most things we need in our everyday lives.
Documentation
Any commercial design will normally also include an element of documentation; the precise nature of this documentation will vary according to the size and complexity of the circuit and the country in which it is to be used. As a bare minimum, the documentation will normally include at least the specification and testing procedures for the design and a statement of compliance with current regulations. In the
Software
See also
- Advanced Design System
- Circuit design language
- Configuration design
- Electrical system design
- Electronic circuit design
- Electronic design automation
- Espresso heuristic logic minimizer
- GDSII
- Integrated circuit design
- List of EDA companies
- Mesh analysis
- Open Artwork System Interchange Standard
References
- OCLC 852788338.
- ^ Lam, William K. (2005-08-19). "Does Your Design Meet Its Specs? Introduction to Hardware Design Verification | What Is Design Verification?". Informit.com. Retrieved 2016-09-27.
- ^ A. Tajalli, et al., "Design trade-offs in ultra-low-power digital nanoscale CMOS," IEEE TCAS-I 2011.
- ^ DeMers, 1997
- ^ "Design Flow Chart" (GIF). Informit.com. Retrieved 2016-09-27.
- ^ "Electric Circuits I: Lab4". Archived from the original on 2005-08-30. Retrieved 2007-11-04.
- ^ "A.T.E. Solutions, Inc. | Design for Testability and for Built-In Self Test". Besttest.com. Archived from the original on 2016-09-01. Retrieved 2016-09-27.
- ]
- .
- .
- ^ "How Much Does a Prototype Cost?". PREDICTABLE DESIGNS. 2016-09-04. Retrieved 2021-05-15.
- .
- S2CID 199443010.
- S2CID 59222491.
- ^ OCLC 444859449.[page needed]
- ^ "Basics of Different Electronic Circuit Design Process". ElProCus - Electronic Projects for Engineering Students. 2017-04-13. Retrieved 2020-04-29.
- ^ "Untitled Document". Archived from the original on 2005-11-26. Retrieved 2005-12-12.
Sources
- "Does Your Design Meet Its Specs? Introduction to Hardware Design Verification | What Is Design Verification?". InformIT. 19 August 2005.
- Diagram of possible design process
- US guide on CE marking
- UK guide on CE marking
- A beginners tutorial on understanding, analysing, and designing basic electronic circuits
- Vladimir Gurevich Electronic Devices on Discrete Components for Industrial and Power Engineering, CRC Press, London - New York, 2008, 418 p., ISBN 9781420069822