Printed Circuit Board Designer's Reference; Basics Chris Robertson
Publisher: Prentice Hall PTR

The transition from one unit system to anotherintroduced chaos in the PCB design industrybecause PCB designers were forced into using twodifferent unit systems during the transitionperiod. In this training module our main motive is to cover the basics and advanced level PCB designing techniques using, ORCAD Software. So let's see if we can recap what we have said so far: the PCB process start with a basic product definition, no more that a sketch and a block diagram showing the basic components and some ideas on how they can be Detailed engineering shows that there is a need for a number of layers, provides an idea to the designer of what components need to routed out and what are the basic connections. I'm gonna go with some things that are EAGLE specific, but you need to know basics. Prototyping breadboard, you can have a nice clean shield with labeled connections and a smaller footprint. Designers can benefit from a set of proven techniques for termination, layout, and routing for SDRAM and DDR devices used in point-to-point . ORCAD is one of the most preferred PCB designing tools in the world. VDD and VSS such that DQ, DQS, DM, and clock signals maintain a VSS reference, while address, command, and control signals maintain a VDD reference. However, I believe the basic procedure is essentially correct for the majority of boards which are too complex to reliably hand trace. Systems using FBGA-packaged DDR components typically split PCB planes between. The small-value capacitors (such as the 47 nanofarad or nF capacitor that we are using in this circuit) are non-polarised, meaning that there is no positive leg and there is no negative leg. Without the need to Addendum: since writing this instructable I have discovered there are such things as "blind vias" - where the hole only goes part-way through the pcb and is connected to an inner layer only. These types of ceramic or polyester . Support & Services Learn about key concepts in SPICE simulation, PCB layout and the fundamentals of circuit design. This isn't going to be a “how to use your mouse” tutorial. So here I'm going to tell you everything you need to know to make a schematic and PCB layout, and get a beautiful shield that will plug into the top of your Arduino. The CAD vendor's way of Reference Designator Height and Line Width • Snap grid for all The basic rule, in today's component package technology, is that most of the time component package dimensions and solder terminal leads are in 0.05mm increments. FYI, I just added a reference to your Instructable from my video page as well. For your reference, here is the circuit schematic of the audio amplifier again: IMPORTANT: Audio Input Signal and Audio . Thing: I assume you know how to use your computer.