Electronics Design
When designing any product, the first steps are to identify the need the product will fill, and identify the market it will be sold into. Then we consider the competing products that can already perform the job - even 'unique' products have some kind of competition, somewhere. Finally we build up a specification for a new product positioned successfully in the market. This is detailed a little more in our guide to writing a new product spec.
This guide describes our process for The Printed Circuit Board (PCB)

The CAD PCB layout consists of several layers, for illustration purposes the holes, outline and component identification layers can be combined into one diagram. When we produce PCBs for clients, we use actual size checkplots during the design process. A PCB will usually have mounting holes and may possibly have cutouts, by cutting an actual size checkplot and placing it in the enclosure, you can see how it will be positioned in relation to other parts. We can also place components up against the pad markings as a quick double check of sizing.

The secret to creativity is knowing how to hide your sources. -- Albert Einstein
We put a bit of effort into the PCB design - it is somewheredesigning a new electronic circuit board, typically one that is microprocessor based with embedded firmware. This same process is used for most products we design. Usually an industrial designer is employed to produce the product enclosure or case, with labelling and graphics. We deliver working prototypes and technical documentation to the client - and then the product goes on to beta testing, pilot run, and production release.
covering a wide range of categories in electronics like audio, music,home/garden related,computer hardware,radio,robotics etc to name a few. There are also links to sites that offer hobby electronic kits and other electronics hobby related stuff. Use the menu on the left to browse different circuit categories. You can view the entire electronic circuit schematics index by clicking here.

Electronic Circuit Design & Electronic Product Design service at low costs & High Quality - Customized to your needs--
More info about our electronics design service (circuit design)

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Unlike a block diagram or layout diagram, a circuit diagram shows the actual wire connections being used. The diagram does not show the physical arrangement of components. A drawing meant to depict what the circuit actually looks like is called "artwork" or "layout".

Circuit diagrams are used for the design (circuit design), construction (such as PCB layout), and maintenance of electrical and electronic equipment.

Contents [hide]
1 Legends
2 Symbols
2.1 Standards
2.2 Linkages
3 European and Australian codes
4 Organization of drawings
5 Art Work
6 See also
7 External links Layout
The connections on the PCB should be identical to the circuit diagram, but while the circuit diagram is arranged to be readable, the PCB layout is arranged to be functional, so there is rarely any visible correlation between the circuit and the layout.
PCB layout can be performed manually (using CAD) or in combination with an Autorouter. The best results are usually still achieved using atleast some manual routing - simply because the design engineer has a far better judgement of how to arrange circuitry. Surprisingly, many autorouted boards are often completely illogical in their track routing - the program has optimised the connections, and sacrificed any small amount of order that may have been put in place by manual routing. Generally autorouted boards are slightly harder for a technician to repair or debug, for this reason. Historically, PCBs used to be laid out by drawing or using stick on paper shapes on mylar film, - that really WAS manual routing!

[edit] Legends

Common circuit diagram symbols (with US Resistor Symbol)On a circuit diagram, the symbols for components are labelled with a descriptor (or reference designator) matching that on the list of parts. For example, C1 is the first capacitor, L1 is the first inductor, Q1 is the first transistor, and R1 is the first resistor (note that this is not written as a subscript, as in R1, L1,…). The letters that