Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

pcb exposure box unit

Status
Not open for further replies.

DR.boy

Junior Member level 1
Joined
Mar 8, 2013
Messages
16
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,362
hello guys !!
i would like to make a simple non-cost pcb exposure box , will this kind of lamp be enough ??
instead of using(Ballast , starters ,...etc) looks complicated
800px-Fluorescent_Lamp.jpg

i think this is 15W lamp .
thanks !
 

Bob Thomas

Newbie level 4
Joined
Mar 14, 2013
Messages
7
Helped
2
Reputation
4
Reaction score
2
Trophy points
1,283
Location
SEA
Activity points
1,311
I think that will work.But UV lamp is better.
 

DR.boy

Junior Member level 1
Joined
Mar 8, 2013
Messages
16
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,362
thanks for reply
more details plz , have u experienced it before ?
what bugs or problem will be facing if i use it ?
thanks !!
 
Last edited:

betwixt

Super Moderator
Staff member
Joined
Jul 4, 2009
Messages
15,149
Helped
4,940
Reputation
9,901
Reaction score
4,752
Trophy points
1,393
Location
Aberdyfi, West Wales, UK
Activity points
128,672
You should aim for UV rather than visible light and to give an even amount of light over the PCB. The lamp you show will give some UV but is predominantly white and the light source area is fairly small. White light WILL work with sensitized PCB but much the exposure time will be much longer and also there is risk of heat from the lamp changing the PCB chemistry. The best solution by far is to use two or more UV strip lights, they give better and more even light output and the small amount of heat they produce is also spread evenly over the whole board.

Brian.
 
  • Like
Reactions: DR.boy

    DR.boy

    Points: 2
    Helpful Answer Positive Rating

rfredel

Full Member level 5
Joined
Jun 22, 2012
Messages
290
Helped
79
Reputation
158
Reaction score
77
Trophy points
1,308
Location
Bonn, Germany
Activity points
3,096
Hello DR.boy,

you can do it.

Long time ago I have built a box of wood with a glass plate of an old scanner. I put 4 fluorescent lamps with 8 W inside. So I get the same light across the glass plate.

For making very good PCBs use UV lamps, because the photoresist is sensitive to UV.

Regards

Rainer
 
  • Like
Reactions: DR.boy

    DR.boy

    Points: 2
    Helpful Answer Positive Rating

DR.boy

Junior Member level 1
Joined
Mar 8, 2013
Messages
16
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,362
thank you guys !!
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top