Post on 28-Dec-2015
transcript
PRODUCING PCB LAYOUTS
Suggestions:
Our class found that Yanka was Idea for creating PCB Board Layouts.
Yanka allows a user to print off a bill of materials. (It includes English Pricing)
Open Yanka, use PCB with Electronics
Design a Circuit!
Copy and Past into Rectangular PCB Space
Click on the second icon on the top right!
Print the Bill of MaterialsMake changes (such as 386 for 555)
Click on the First icon on the top right!
Select Quick, To automatically create tracks
Select View
Select Display Artwork Print on transparency!
Explore Views like-> Real View
Materials PCB boards Yanka Acetone Magazine paper/ Laser Printer Transparencies Laser Printer Iron/ Press
Safety Instructions
Solutions used in etching are CorrosiveEveryone must wear gloves and goggles when
working with such chemicalsWe will not be using in this classIs not recommended for use at home
What to Etch?
Need to design a circuit schematicWires will be the
copper that is not etched
http://www.tattoodonkey.com/pics/c/i/circuit-board-drawing--i-b-tattoodonkey.com.jpg(Accessed October 12, 2011.)
Patterning PCB Boards
STEP 1: Print schematic on magazine paper with a laser printer(Suggestion)
Print on Laser printable Transparency
STEP 2: Clean PCB board with a wire mesh pad and rinse with water
Patterning PCB Boards
STEP 3: Iron the board 1 min and then on the design onto the PCB board for ~1 minute
(Suggestion) Iron for up to five minutes Or press for a minute or two
Patterning PCB Boards
STEP 4: Place the PCB into water and gently remove the magazine paper
(Suggestion) Print on Laser printable
Transparency using water to take off magazine paper is not needed. The print is transferred directly to the PCB Board.
Etching PCB Boards
STEP 5: Use a black permanent marker to lay out any tracks that need protection
STEP 6: Send to a lab and have the boards chemically etched.
Why Chemically Etch the Copper?
Able to form electrical connections between circuit componentsNo external wiresContinuous connections
http://www.kollewin.com/blog/printed-circuit-board-manufacturing/(Accessed October 12, 2011.)
Copper
Cu Very high thermal
properties Great electrical
conductivityGreat properties for
charge carrier material in PCB!!
http://www.billows.com/IndustryNews/CopperMarketTrend.aspx (Accessed October 12, 2011.)