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zox2003 8th December 2006 03:41 AM

"TECHNO"Amp building in progress-using "Iron Method"
2 Attachment(s)
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.

zox2003 8th December 2006 03:43 AM

2 Attachment(s)
Silk Screen side was done using same Iron Transfer method:

zox2003 8th December 2006 03:00 PM

So any comments or suggestions????

pinkmouse 8th December 2006 03:02 PM

Nice boards. Time for you to do some soldering! :)

kubeek 8th December 2006 03:44 PM

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.


zox2003 8th December 2006 04:28 PM

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.

kubeek 8th December 2006 05:39 PM

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 ;)

boraomega 8th December 2006 09:05 PM

Sve sam video, veoma sam zadovoljan i od srca mi je drago sto si se odlucio za moj dizajn!

Zen Mod 8th December 2006 09:23 PM


I used Staples Laser Glossy paper.
can you give me more details .......where locally you buyed that paper and which brand exactly is ............


zox2003 8th December 2006 09:56 PM

I bought it at store called "STAPLES" here in USA.

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