PC Boards the Easy Way
My latest homebrew project is a “universal” interface to connect the computer, the HF radio, the headset and the footswitch together in such a way as to allow logical audio path switching and level control, along with DC isolation (transformer coupling) of the audio signals. For example, my homeb...
PCB Cleaning Overview
You will need an acid brush (the cheap type with the tin handle), a liquid dispenser like a pump bottle or wash bottle, a solvent, and some type of paper wipe. See the photos to see what the brush and the bottles look like. Use 90% (or higher) isopropyl alcohol for cleaning. It doesn't cost much, ev...
Safely Tips of Cleaning PCB With Ultrasonic Cleanin
Printed circuit boards, especially those used in PDAs (personal digital assistants) like cell phones, get a lot of abuse. In addition to collecting dust and dirt that penetrates the cases of cell phones, e-book readers and similar hand-held devices PCBs have been known to suffer from immersion in and...
PCB Cleaning Techniques
One of the things that distinguish a professional printed circuit board from an amateur made one is the final appearance. Gobs of sticky rosin flux detract greatly from an otherwise neat circuit. Cleaning the rosin off the board is one of the more misunderstood processes in making homemade boards. M...
Cleaning Circuit Boards
There are a variety of methods that can be used to clean circuit boards depending on the type of board, the type of grime, and experience level and available tools of the person doing the cleaning. You must ask yourself one important question before cleaning a circuit board: "Is having the board cle...
How to Etch a Two Layer PCB with UV-sensitive Coppe
Theory If you've ever developed film then you've taken part in a process very similar to UV sensitive PCB etching. The basic concept is to use UV light to soften and remove a substrate and use the remaining substrate to protect copper from an acid bath. Shopping Copper. To start, you'll need to ...
How to Make PCB With the UV-Exposure
Print the positive The first thing to do is printing the PCB layout to the foil. This can be done with the foil named in (1) using the shack printer. Put the foil into the printer's manual feed face up (the side that is marked to be sensitive to the toner facing up). It's recommended to fix a small ...
What is Making PCBs With the UV-Exposure Needed
Theese are the things needed: 1. A foil to print on with the laserprinter (works good: Conrad / Laser-Spezial-Folie/matt Best.-Nr.: 519570 - 62) 2. foto-positive base pcb-material (works good: Conrad / Bungard Platinen-Basismaterial 120306E50 Best.-Nr.: 529184 - 62, 529273 - 62, 523683 - 62 alterna...
What is UV-Exposure Method
For reproduceable results when making PCBs and super-tiny structures, there is a UV-Device for making PCBs now. Making PCBs with UV Exposure requires that some things are done in a different way to when making them with the printer. This document should at some point give an overview what steps are n...
Cleaning Copperclad Substrates
The proper cleaning of copperclad substrates is so important to the ultimate success of your PCB prototyping effort that it is understandably worth the effort to learn to do it well. Luckily, it is a process which is easily mastered given the ready availability of chemically optimized copper cleaners...
