PCB Soldering Process
Solder needs a clean surface on which to adhere. Buff the copper foil of a PC board with steel wool before soldering. Remove any oil, paint, wax, etc. with a solvent, steel wool, or fine sandpaper. To solder, heat the connection with the tip of the soldering iron for a few seconds, then apply the ...
Different Ways of PCB Etching(Way number one)
Step 1: Design Picture of Design First you need to design the board using a service like Eagle, Fritzing or you can even just use Adobe Illustrator if you know exactly what you want. And remember to flip the design once you have it complete before you print it out......
Different Ways of PCB Etching(Way number two)
Step 1: Paper and Printer selection Picture of Paper and Printer selection Paper selection Selecting an appropriate paper is your first step in making a right selection. Glossy photo quality paper or even a glossy thick magazine sheet would do wonders Printer selection I have used a printer to t...
PCB Etching Overview
Chemical etching is usually done with ammonium persulfate or ferric chloride. For PTH (plated-through holes), additional steps of electroless deposition are done after the holes are drilled, then copper is electroplated to build up the thickness, the boards are screened, and plated with tin/lead. The...
Gerber File Contents
About RS-274D and RS-274X There are two "standards" for Gerber files out there: the "old" and the "new". The old standard (D) spreads information for a single layer accross at least two files. The new standard (X) allows all the information for a layer to be contained in a single file. The bigge...
Gerber Files and PCB Design Considerations
What's all that have to do with Gerber files? Well, lots of things. I'm going to break them down into two areas: Legacy Issues and DFM. Legacy Issues As mentioned earlier, the Gerber format was originally used as NC to drive mechanical systems that selectively exposed photographic film to light in ...
Gerber Files in PCB Manufacturing
The purpose of the PCB is to mechanically support components as well as move the proper number of electrons to where they are need. That is, the PCB is made with channels (traces) of conductive material along which electricity flows (if you will) from component to component. A "bare" PCB is one that...
PCB Gerber Files Overview
Gerber is a standard electronics industry file format that the content of witch is ASCII text (i.e. English letters, digits and a few special characters) and looks like a human could almost read and understand. used to communicate design information to manufacturing for many types of printed circuit ...
USB PCB Circuit
The circuit is based on V-USB's recommended circuitry. It's powered by the 5V from the USB port. There's two 68 ohm resistors, one on each of the USB data lines, these act as terminating resistors which suppress reflected signals. There is a 1.8 kilo ohm resistor on the D+ line, which allows the comp...
USB PCB Circuit Assembly
Solder all of the electrical components. 0604 sized components are very easy to solder if you have a pair of tweezers. Put some solder on one pad, keep heating that pad and move the component into that pad, make sure it's aligned correctly, then remove the heat and let the first joint cool. Then you...
