tailieunhanh - How To Make Printed Circuit Boards

PRINTED CIRCUIT Processes & Instructions Why make a PC Board?? This may sound like a strange question, considering that we are promoting PC board making products here. However, there are times when a PC board is not necessary and may require a lot more time than you want to spend. A PC board will provide repeated accuracy for any quantity of the same board, but if you are making just one, why not use a Protoboard instead? | Comprehensive Datak Instructions for Printed Circuit Prototyping DATAK PRINTED CIRCUIT Processes Instructions Contents Comprehensive Instructions for Datak s different processes for making PC boards. Including a beginners introduction to PC board making. Why make a PC Board This may sound like a strange question considering that we are promoting PC board making products here. However there are times when a PC board is not necessary and may require a lot more time than you want to spend. A PC board will provide repeated accuracy for any quantity of the same board but if you are making just one why not use a Protoboard instead I ntroduction Datak printed circuit board making processes are intended for two uses Making a prototype and for small production runs. Users include design engineers experimenters as well as students and hobbyists. Instructors are i nvited to copy these materials freely. There are a number of methods for producing a printed circuit board described herein. Read the following synopsis to determine which method best suites your projects. Most li kely you will eventually use more than one of the following methods. The METHODS The DIRECT ETCH method is usually the quickest way to produce one small circuit board. All beginners should try this method as it is a good teacher. Not recommended when you need to make many boards or for circuits with numerous components. Making Positive artwork Positive artwork is needed for any of these processes except Direct Etch. We suggest that you read this section even if you will be using a computer to produce your positive. Positive Presensitized PC Board Method This is an ideal method for making several PC boards or more and it is quick and accurate as well. Positive Continued from column 1 The method is fast and the most trouble free getting excellent quality is easy. It is somewhat higher in cost than other methods. The positive method requires the purchase of boards that are precoated with sensitizer. .