"TECHNO"Amp building in progress-using "Iron Method" - diyAudio
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Old 8th December 2006, 03:41 AM   #1
zox2003 is offline zox2003  United States
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Talking "TECHNO"Amp building in progress-using "Iron Method"

Finally I decide to build amplifier for my self. After researching a lot I decide to
Ask my “country man” Dr. Bora Jagodic for suggestion .I was deciding between MOSFET or BJT amplifier.Just recently I received some of MJL 4302 and MJL 4281 and
Decide, with Bora’s help, to build his TECHNO amplifier. BTW, I am RF Design Engineer with some knowledge in LF band. Instead of designing my own PCB (which I could using Or CAD or PADS) Bora sent me his PCB Layout (pdf) which included bottom side (traces), component side and silk screen.
For first time I decided to try to use laser printer and iron (previously I used photo process).After number of experiments and hours I finally got everything working well.
I own big THANKS to Dr. Bora for help with this “project”.
I have 2 PCB’s ready to assemble. I ‘ll keep you updated on this project.PLEASE POST COMMENTS AND SUGGESTIONS!

Here are some pictures of bare PCB’s.
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Old 8th December 2006, 03:43 AM   #2
zox2003 is offline zox2003  United States
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Silk Screen side was done using same Iron Transfer method:
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Old 8th December 2006, 03:00 PM   #3
zox2003 is offline zox2003  United States
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So any comments or suggestions????
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Old 8th December 2006, 03:02 PM   #4
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Nice boards. Time for you to do some soldering!
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Old 8th December 2006, 03:44 PM   #5
kubeek is offline kubeek  Czech Republic
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Could you post which kind of paper and for how long etc etc did you use?

I was once trying to use the toner transfer method, but with no luck. I had only few kinds of paper and neither wanted to fall apart or soak off and leave the traces without "hairs" from the paper.

Thanks
Kubeek
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Old 8th December 2006, 04:28 PM   #6
zox2003 is offline zox2003  United States
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I used Staples Laser Glossy paper.
Before that I tried couple of other papers and it did not work that well.Ironed for about 2 minutes (Until I smelled paper burn).
Soaked PCB in warm water for about 5 minutes and peeled paper off.Used old toothbrush soaked in water and soap to clean some paper hairs.

Everything came out great.I was able to get fine print done this way.
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Old 8th December 2006, 05:39 PM   #7
kubeek is offline kubeek  Czech Republic
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Edit: I just found a text in my language describing use of common
colored self-adhesive paper (water soluble), for children´s drawing etc, so probably my problems with drawing PCBs are solved.

But thanks anyway, it was you who made me search in my language and not in english. Now I don´t have to buy expensive boxes of photo-quality paper just for trying if it works, the set of those drawing papers costs something like 1$ for 20 sheets A4
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Old 8th December 2006, 09:05 PM   #8
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Old 8th December 2006, 09:23 PM   #9
Zen Mod is offline Zen Mod  Serbia
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Quote:
I used Staples Laser Glossy paper.
can you give me more details .......where locally you buyed that paper and which brand exactly is ............

TIA
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Old 8th December 2006, 09:56 PM   #10
zox2003 is offline zox2003  United States
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I bought it at store called "STAPLES" here in USA.
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